U.S. patent application number 10/585398 was filed with the patent office on 2007-04-26 for automatic personal weapon with electronic management and caseless ammunitions.
Invention is credited to Philippe Courty.
Application Number | 20070089598 10/585398 |
Document ID | / |
Family ID | 29252392 |
Filed Date | 2007-04-26 |
United States Patent
Application |
20070089598 |
Kind Code |
A1 |
Courty; Philippe |
April 26, 2007 |
Automatic personal weapon with electronic management and caseless
ammunitions
Abstract
The invention relates to a personal weapon, intended for
semi-automatic and automatic firing of caseless ammunitions,
provided with an electronic fire controller with biometric
identification of the person firing. The weapon has a sealing
device for the chamber based on using segments or corollas with
variation of bore size mechanically or with gas pressure. A delay
in opening the barrel/breech unit may be introduced using spigots
driven by propellant gases. A device for sequencing compartments in
tandem of the magazine uses the volume reduction of ammunition to
double the power of the firearm. A removable locker permits the
integral locking of breech unit, trigger, magazine and dismantling
bolt for an absolute weapon safety. A telescopic extension device
for the barrel increases the power of the ammunition and a gas
bleed in the chamber permits the stabilisation of the firing.
Inventors: |
Courty; Philippe; (Paris,
FR) |
Correspondence
Address: |
Philippe Courty
89 bd. Exelmans
F-75016 PARIS
FR
|
Family ID: |
29252392 |
Appl. No.: |
10/585398 |
Filed: |
April 16, 2003 |
PCT Filed: |
April 16, 2003 |
PCT NO: |
PCT/FR03/01220 |
371 Date: |
July 5, 2006 |
Current U.S.
Class: |
89/196 ;
42/69.03; 42/70.01; 89/193 |
Current CPC
Class: |
F42B 5/18 20130101; F42B
5/188 20130101; F42B 5/08 20130101; F41A 17/54 20130101; F41A 9/68
20130101; F42B 5/184 20130101; F41A 3/46 20130101; F41A 3/74
20130101; F41A 3/62 20130101; F41A 17/06 20130101; F41A 19/33
20130101 |
Class at
Publication: |
089/196 ;
089/193; 042/069.03; 042/070.01 |
International
Class: |
F41C 9/00 20060101
F41C009/00 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 16, 2002 |
FR |
02/04731 |
Jan 17, 2003 |
FR |
03/00520 |
Claims
1- Automatic personal weapon using caseless ammunitions
characterized in that it comprises: a chamber sealing system using
mechanical or gas pressure variation of the bore of segments or
corollas, a cylinder head/barrel solidarisation device using
spigots driven by gas, a cartridge ignition/ejection combined
device with a function of extractor recall, an extractor automatic
raising device, a magazine compartments sequencer device, a
magazine cartridges placement device, a counter-trigger safety
device, a quadruple effect key locking mechanism, a firing
stabilization device using gas port at the chamber level, an
ammunition power increase device using a telescopic barrel, an
information routing device using a recuperator spring doubled by
one or more conducting wires.
2- Automatic personal weapon according to claim 1 characterized in
that the mechanical device producing a variation of the bore of
segments or corollas is composed with: a central sleeve (44), whose
front face corresponds to the bottom of the cartridge basin,
equipped with two conical shoulders or stages (45 & 45 bis)
simultaneously ensuring the gas sealing and course abutment role of
said sleeve, the second conical stage (45 bis) ensuring more
particularly the role of drawer for the compression of spring pumps
(47) or the displacement of balls (54 his). a conical narrowing
(FIG. 6/15 & 6/16, A) of the piston (62) chamber such that the
chamber/piston machining allowance be lower or equal to that of
maximum bore (FIG. 6/16, C) of a corolla (41 sept) when the piston
reaches its course end, spring-pumps (47) arranged out of star
around the axis of the chuck. a central sleeve (44) equipped with a
stage (45 quart) seat for expansible disc(s) (46). one or more
conical expansible discs (46).
3- Automatic personal weapon according to claim 1 characterized in
that the device for variation by gas pressure of the bore of
segments or corollas comprises: a circular groove (42 bis) to
uniformly distribute the gas pressure, concentric with the housing
(42) of a segment (41, 41 his, 41 ter, 41 sept) or couple of
segments (41 quart & quint). channels (40) bored through the
chuck body with an appreciably radial direction and emerging in the
circular groove (42 bis) concentric to the housing (42) of the ring
seal and/or the housing for spigots (FIG. 6 bis) and communicating
with channels (39) parallel to the central axis and emerging in the
sole cartridge basin. grooves (40 bis) in a variable number
symmetrically distributed at the periphery of the piston head and
ensuring gas tapping at the front face level of said piston in
order to forward them to the circulation groove (42 bis) with which
they communicate, a cartridge basin comprising radial lights
(channels) or crenels (40 ter), symmetrically distributed at the
periphery and ensuring the communication between the interior of
the basin and the circumferential housing (42) groove of a sealing
segment (or couple of segments) located around the piston at the
level of said basin.
4- Automatic personal weapon according to claims 1, 2 and 3
characterized in that the segments (41, 41 bis, 41 ter, 41 quart,
41 quint, 41 six) are retracted in rest position inside their
housing groove (42) in such way that their external diameter remain
lower than the bore or diameter of the piston.
5- Automatic personal weapon according to claims 1, 2 and 3
characterized in that the sealing corollas (41 sept, oct, nove
& eleven) are rotulant and closed and that the thickness of the
section decreases regularly, according to a generating line
preferentially but not exclusively curve, ranging between the base
(B) and the upper edge (O) in order to favor, under gas pressure or
a narrowing of the chamber (62), a combined elastic radial
variation of the curve with a torsion of the complete section (FIG.
6/17) which swivels around the round interior edge (FIG. 6/15, B)
of its base, the external face comprises an angular sector (FIG.
6/15), on both sides of the point (C) of greater bore, whose radius
is advantageously close to that of the chamber in order to favor a
peripheral sealing contact of the rotulant type, the external face
can comprise a crown (41 ten) whose opening is opposed to that of
the corolla (41 nove) and such that the bore at rest of its larger
diameter point (D) is superior to that of the arrow (C) of said
corolla and to that of a contracting of the piston chamber (62),
the internal edge (FIG. 6/15, B) of the base section is
preferentially circular in order to ensure a rotulant sealing
contact via a valve effect between the walls (FIG. 6/16 & 6/18,
42 quint & 42 six) of its housing groove (42), the base of the
corolla (41 eleven) is integrated into the lower part (17) or chuck
of the piston forming a rotulant corolla piston unit, the bore, at
rest, of the upper external edge (FIG. 6/17, point 0) is at most
equal to that of the piston.
6- Automatic personal weapon according to claims 1, 2 and 3
characterized in that the segment, couple of segments or corolla
(41, 41 bis, 41 ter, 41 quart, 41 quint, 41 six, 41 sept, 41 oct,
41 nove, 41 eleven) is assembled: on the heads of spring pumps
(47), placed out of star around the axis of the piston, said pumps
sitting on a conical stage (45 bis) of the central sleeve whose
displacement, under the action of propellant gases, causes a radial
pressure on said spring pumps which compress and cause the uniform
diameter increase of the segment by plating it against the wall of
the piston cylinder (62) thus ensuring the gas sealing. on balls
(54) or spigots disposed all around the sleeve (44) in the segment
housing groove, so as to be simultaneously in contact with the
internal face of said segment and a conical stage (45 bis) of the
sleeve whose displacement causes the radial extension involving the
uniform diameter increase of the ring seal by plating it against
the wall of the piston cylinder (62) thus ensuring the gas sealing.
around an expansible disc (46) sitting on a stage of the central
sleeve whose displacement, under the action of propellant gases,
causes the compression of said disc involving its uniform diameter
increase and that the ring seal (41) by plating it against the wall
of the piston cylinder housing (62) thus ensuring the gas sealing.
around a circular groove (42 bis), concentric with the seat groove
(42), intended to uniformly distribute the action of propellant
gases on the internal face of the segment (41, 41 bis, 41 ter, 41
quart & quint, 41 sept) causing its uniform diameter increase
by plating it against the cylinder wall (62) of the piston chamber
ensuring thus the gas sealing. in front of radial lights or crenels
(40 ter) arranged on the periphery of the cartridge basin so as to
uniformly distribute the action of propellant gases on the internal
face of the segment, couple of segments (41, 41 bis, 41 ter, 41
quart & quint, 41 sept) or corollas (41 sept, nove &
eleven) causing a uniform diameter increase and a contact with the
cylinder wall (62) of piston housing ensuring thus the gas sealing.
such that, in the case of two segments (41 quart, 41 quint) with a
profile preferentially but not exclusively out of square or L
shaped, concentric and indexed at 180.degree., the short branch
(drawing 7/27, FIG. 6/12 to 6/14) of their section penetrates in a
circumferential groove dug at the bottom and on level of the lower
edge of their housing groove (42) forming a shoulder (42 quint) so
that when the piston recoils, under the friction effects of the
external segment (41 quint) on the chamber wall, the short branch
of the L section of the internal segment (41 quarter) abuts against
the shoulder (42 quint) forming thus a sealing and preventing any
gas leakage circulating behind the segments. The internal segment
(41 quarter) preferentially comprises a bayonet opening on the
short branch of its section such that its opening (h) be shorter
than the opening of said segment once dilated on the shoulder (42
quint). The external segment (41 quint) comprises a bayonet opening
on its two branches so that a perfect sealing be ensured by the
couple of segments independently of the friction effects tending to
lift it up or the gas pressure tending to plate it on the lower
face of the receiving groove. such that, in the case of a closed
annular segment (41 six), the sides of the trapezoid/triangular
isosceles section are resting against the symmetrically arranged
faces on the sleeve head (44) and chuck (17) at the level of the
groove (42) housing in order to produce an expansion of said
segment when an effort is applied to the piston head. the opening
directed towards the piston head in the case of corollas (FIGS.
6/16 & 6/18, 41 sept & 41 nove) with some lateral and axial
play in a housing (42) of said piston comprising at the level of
its lower edge a receiving groove (42 quart) for the corolla base
or foot in order to facilitate the angular torsion displacement of
the section and the rotulant contact of the internal rounded edge
(FIG. 6/15) of said base playing between the lower shoulder (42
six) of the groove (42 quart) and its upper conical shoulder (42
quint) according to whether gas pressure pushes the corolla towards
the bottom of the piston or friction against the chamber wall tends
to lift it up. upside-down (41 oct.) with the sealing corolla (41
sept) in order to constitute a scraping corolla such that the arrow
of convexity of the generating line be in contact with the edge of
the chamber entry as soon as the cylinder head is fully closed.
7- Automatic personal weapon according to claim 1 characterized in
that the barrel/breech solidarisation device be composed of:
radially laid out spigots housing (56), communicating with channels
(39, 40) emerging in the cartridge basin, which ensure, under the
pressure of propellant gases, the displacement of said spigots (54
& 55) according to an outwards radial direction outside the
skirt said skirt having a conical housing limiting the course of
each tenon thus operating a tight connection of the valve type,
spigots (54, 55).
8- Automatic personal weapon according to claims 1 & 7 chancy
in that the piston chamber (62) comprises females housings for the
heads of piston spigots in front of which they are directly
located.
9- Automatic personal weapon according to claim 1 characterized in
that the breech/barrel solidarisation device be composed of
radially laid out tenon housings (56 bis) in the barrel internal
wall at the level of the ammunition chamber in which they emerge
directly and ensure, under the pressure of propellant gases, the
displacement of spigots (54 & 55) that they contain according
to an outwards radial direction.
10- Automatic personal weapon according to claims 1 & 9
characterized in that the cylinder head (16) comprises female
housings (56 ter) for barrel spigots in front of which they are
directly located and said spigots (54, 55) preferentially adopt a
sphere shape or present a flattened base topped by a cone finished
by a half-sphere.
11- Automatic personal weapon according to claim 1 characterized in
that the combined device for igniting/ejection of cartridge (27,
28, 29 & 30) consists of an axial valve stem coupled to an
extension (30, 38) striking during the aft movement of the cylinder
head an abutment (77) integral with the frame.
12- Automatic personal weapon according to claim 1 characterized in
that the extractor foot return device (22) be articulated at the
sleeve level and said foot assembled resting against the conical
valve shape part of the igniter/ejector (27) so that the return
spring of said igniter also provides the recall function for said
extractor.
13- Automatic personal weapon according to claim 1 characterized in
that the automatic device for raising the extractor comprises a
claw (21) which presents a hook shaped head whose front face is
bevelled in order to cooperate with the raising slope (59) of the
cartridge chamber and that the length of the main extractor arm is
adapted to ensure the engagement of the raising slope before the
head of cartridge butts against the entry of barrel during the
breech closure.
14- Automatic personal weapon according to claims 1 & 13
characterized in that the housing for rising the extractor claw is
composed of a tilted slope (59) located at the entry of the
ammunition chamber and in the axis of said extractor claw with
which it cooperates.
15- Automatic personal weapon according to claim 1 characterized in
that the trigger safety (68) or "counter-trigger" is composed of:
an operating (68) bar or counter-trigger lever integral with the
trigger guard bolt and retractable in a housing (69) of said
trigger guard, a trigger locking device manoeuvred by angular
rotation of the trigger (64) following a pressure exerted on its
back face.
16- Automatic personal weapon according to claim 15 characterized
in that the trigger locking device is composed of a female housing
(67) receiving the warp end (66 bis) of the trigger guard bolt and
a circular cam (67 bis) over a portion of angle corresponding to
the backwards clearance (shooting) of the trigger, cam on which the
warp end is pressing under the action of the return spring of the
bolt and said housing (67) positioned in such way that its
engagement by the warp end is only possible after the trigger
carried out an anti-clockwise rotation suitable to erase a setback
(67 ter) involving an embossing effect by slight retreat of the
warp end right before it engages its trigger housing (67).
17- Automatic personal weapon according to claim 1 characterized in
that the magazine compartments coupling/sequencer device is
composed of a cartridge arm stopper (103) comprising at its end a
horizontal abutment (103 bis), articulated on the back wall of the
magazine well with which it is integral via an axis crossing the
frame: either in a parallel way to the barrel axis in order to
ensure a lateral swivelling of the stopper-arm (103) and its
horizontal abutment (103 bis) initiated by the rise of the front
conveyer button (101) who, as soon as the last cartridge leaves the
compartment, causes the swing of a transmitting rod housed in the
internal side wall of the magazine well and mounted swivelling on
its median axis to cooperate with an arm integral to that (103) of
the cartridge stopper to involve its lateral swing. either in a
perpendicular way to the barrel axis in order to ensure a backwards
swivelling of the stopper which then comprises an locking-arm (103
ter) equipped at its end with a pin (102 bis) to co-operate with a
locking hook (102).
18- Automatic personal weapon according to claim 17 characterized
in that the stopper hook (102) comprises a cam (102 ter)
cooperating with the conveyer button (101) of the front compartment
in order to cause its swivelling.
19- Automatic personal weapon according to claim 1 characterized in
that the cartridges placement device in the magazine (95) be
composed of a rectilinear profile of said magazine from the base up
to a certain height where its lateral faces adopt a particular
slope angle forming a narrowing at the top such that the angle of
slope (or slope) of a side face is different from that of the other
face.
20- Automatic personal weapon according to claim 1 characterized in
that the barrel rise compensator unit for the shooting of caseless
ammunitions be composed of a vertical gas port (90), bored through
the upper wall of the barrel at the cartridge chamber entry,
communicating: either with an assembled side-mounted tube emerging
at the top end, either with a longitudinally bored channel (FIG.
10, n.degree.92) in the slide wall alongside the barrel and
emerging at its end according to an upwards direction. The slide
opening adopts the shape of a groove (91) practiced on its internal
face with a favourable length to support the gas supply during the
back travel of the breech.
21- Automatic personal weapon according to claim 1 characterized in
that the key locking mechanism of the weapon is composed of a
housing (113) for a removable locker (114) and a locking stem (115)
for the magazine well, said housing located on the lower face of
the frame in front of the trigger guard and the aforementioned
locker crossing the frame to emerge under the barrel in order to
limit the breech travel to the sole distance ranging between the
locker head of and the front lower edge of the breech.
22- Automatic personal weapon according to claim 21 characterized
in that the magazine well locking stem (15) has an emerging end in
said well and the other end comprises a warp end (115 bis)
involving the displacement of said stem during the engagement of
the locker body in its housing (113) in which it emerges.
23- Automatic personal weapon according to claim 1 characterized in
that the device to increase the power of the ammunition is composed
of a telescopic barrel (138) with automatic extension mounted
sliding inside a second barrel (140) and maintained into retracted
position by a return spring (141). The internal barrel (138)
presents the shape of a hollow roll whose internal diameter is
adapted to the caliber of the ammunition and comprises two
contiguous and coaxial sections (138 bis) and (138 ter) with
external diameters ready to cooperate respectively with the
diameters of the interior shoulders (140 bis and 140 ter) of the
external barrel (140) inside which said internal barrel slides.
24- Automatic personal weapon according to claim 23 characterized
in that the telescopic gun (138) comprises on its lower diameter
(138 ter) part a certain number of rectilinear or helicoidal
grooves cooperating with symmetrically arranged grooves on the
internal face of the cylindrical part of lower diameter (140 bis)
of the external barrel with which it cooperates.
25- Automatic personal weapon according to claim 1 characterized in
that the recuperator spring (57) is doubled by one or more
conducting wire contained in a sheath surrounding said wire indexed
at its two ends, namely the barrel bedding and the breech, in order
to ensure a tight multipolar connection between the information
routing wire from the trigger (125 quarter) and the central
processing unit of the breech (125 ter).
Description
TECHNICAL FIELD OF THE INVENTION
[0001] The present invention relates to a small caliber individual
weapon definite so as to guarantee its inviolability and use by the
sole entitled people in order to ensure a perfect control of its
detention. For this purpose, it integrates a morphological
identification (fingerprint) device of the user coupled to an
electric firing system for caseless ammunitions. It is clear that
this formula flees the weapon from any electromagnetic locking
mechanism easy to circumvent as much as the use of traditional
ammunition with case and central percussion that anybody can easily
reload at home.
[0002] The present weapon is thus addressed in priority to the
governments and concerned agencies for a tight control of detention
as well as the enforcement against weapons proliferation. Indeed,
the production of the caseless ammunition according to the
invention could not be obtained in a workshop of private individual
and requires a technology that only governments are capable to
authorize and control.
[0003] Moreover the weapon takes advantage of the compactness which
characterizes the ammunition to appreciably increase the fire power
thanks to a compartmented magazine. This major asset constitutes a
new evolution in the armament field since the application of the
principle of the invention makes it possible to increase the fire
power in proportions beyond common knowledge.
[0004] The principle of the weapon allows for the development of an
innovative trigger safety easy to implement: the counter-trigger.
Its principle suppresses any miscoordination, in particular in the
event of stress, and its safety formula is the only one to stay
permanently engaged and to be released a split second before a
shooting reflex.
[0005] The weapon encompasses also a reliable and simple sealing
system for the chamber of caseless ammunition, a system mastering a
voluminal increase of this chamber as well as a device
incorporating a separate key for full prohibition of shooting,
disassembling, breech and clip manipulation.
[0006] The weapon defined as such comprises: [0007] a central unit,
[0008] a clock, [0009] an electric source (battery . . . ), [0010]
a morphological device for user identification, [0011] an electric
ignition device, [0012] a combined device for ignition/ejection of
cartridge, [0013] an extractor raising device, [0014] a chamber
sealing using mechanical or gas pressure expansion of segments,
[0015] a gas tapping device located at the periphery of the piston
head, [0016] a gas tapping device located at the cartridge basin,
[0017] a cylinder head/barrel solidarisation device using spigots
moved by gas, [0018] a magazine with two compartments, [0019] a
sequencer device for the magazine compartments, [0020] a weapon
recoil management device, [0021] a counter-trigger safety device,
[0022] a telescopic barrel, [0023] a key safety locking mechanism,
[0024] a pusher spring coupled with one or several conducting
wires, [0025] a computer connexion port.
FORMER STATE OF THE TECHNIQUE
[0026] The U.S. Pat. No. 5,603,179 A (Adam HEIKO B) of February
1997 describes a fool-proof mechanism for weapon trigger based on
user fingerprint identification. The co-ordinates of the print are
contained in a cassette unfortunately removable and thus favouring
a fast change without protection since no barrier of inviolability
by access code or similar is envisaged.
[0027] The device is intended to equip a weapon using classical
ammunitions requiring mechanical a firing pin for ignition. An
electromagnetic device connected to the identification device,
ensures the prohibition of percussion as long as the identification
is not assured.
[0028] It is clear that such a system is particularly easy to
circumvent since it is enough to remove the electromagnet to free
the weapon from its selective capacity to authorize firing
with.
[0029] The author also envisages a master-power switch merely
compatible with an emergency shooting.
[0030] Finally, the integration of the selective identification
device involves, taking into account the remanence of the
traditional rod and other transmissions elements as well as the
addition of the new components (cassette or card, electromagnet,
batteries . . . ), an increase in overall volume involving an over
sizing of the weapon handle prejudicial to its employment by small
hands.
[0031] The present patent, on the other hand, describes an entirely
electronic weapon whose elements (central unit, batteries,
electronic charts . . . ) ensuring the complete management of all
functions including identification are placed in the only cylinder
head without involving any volume increase. The absence of any
removable card and another mechanical bolt guarantees a true the
inviolability.
[0032] One counts many attempts to solve the problem of
simplification of the ammunition by suppressing the cases. The
majority of the suggested formulas to date concentrate towards the
more or less complete combustion of the cases and towards the
telescopic design of the ammunition.
[0033] The patents 86 13507, WO 93/18364 & WO 96/17220 of
Dynamit Nobel describe a formula for small caliber telescopic
ammunition rather complex compared to the formula retained for the
present invention. These ammunitions present the particular
disadvantage of ejecting a plastic obturating cap during the
shooting.
[0034] The present patent proposes an improvement of the telescoped
design of the caseless ammunition with, in particular, a specific
housing for the electric igniter making it possible to reduce the
size of the ammunition and suppress any requirement for a cap or
another protection.
[0035] The use of caseless ammunition involves in addition the need
for obtaining a perfectly sealed firing chamber during the
propellant combustion. Many formulas were patented and tested
without apparent success, undoubtedly imputable to the presence of
the traditional mechanical percussion as well as the complexity of
the sealing systems.
[0036] Thus the U.S. Pat. No. 3,345,770 A (Scanlon J. J.), October
1967, proposes a weapon firing caseless ammunitions that have no
extracting groove/rim. The author designs a chamber whose sealing
device is ensured by a chuck comprising a seal out of plastic
located between two open segments/rings. The author does not
specify anything as for the leaks inherent in the opening of these
segments whose section is simply squared as shown in FIGS. 2 and
3.
[0037] The lines 22 to 24 of the .sctn. 2 inform us more on the
principle of sealing retained by Scanlon. Indeed, they clearly give
a report on a diameter of the O ring superior to the bore of the
piston since the collar in round funnel is supposed to compress it
in order to reduce at the same format, without prejudging from the
frictions generating delays in closing the cylinder head, thus
resulting in a deteriorated shooting rate with pending failure
risks. The sealing thus clearly relies on the plastic seal that the
sole head segment cannot efficiently protect from extreme gases
attacks.
[0038] The choice of plastic (neoprene, Teflon . . . column 2 line
18) appeals some questions as far as the maximum temperature the
seal can sustain is concerned, since the melting point of these
materials is generally around 250.degree. C. when the gas reaches
1800.degree. C.
[0039] The weapon being intended for automatic filing, there is a
risk that the overheating of the chamber and the segments quickly
imply a softening, a cooking or a fusion of the seal with clogging,
gluing to the chamber wall, jamming the weapon followed by rupture
with leakage of gases towards the gunner.
[0040] To increase the longevity of the O ring, the author should
have adopted two segments coupled one with the other, placed before
the plastic seal (and non separated by this seal, the aft segment
not ensuring proper protection) and indexed so that their openings
be not in front one to the other. This solution would have had the
advantage of reducing the gas leakages through the opening of the
head segment and improving the conformity of both segments with the
cylinder, without however ensuring a real sealing.
[0041] However, the presence of the segments framing the seal and
bearing the same effort favors the hypothesis that their diameter
is necessarily superior to the piston bore, if no they would not
have any reason to be, the protection of the seal against extreme
gases being then ensured by the piston itself.
[0042] Curiously Scanlon J. J does not evoke the consequence of
this over sizing of the diameter of the segments involving an
inevitable scraping/planning of the entry of the feeding ramp
collar by the sharp squared section (see FIG. 2) of the segment
acting such as a plane. This effect will appear whatever may be the
profile of the collar (round-off, conical . . . ) and the angle of
attack, so tiny be it, since it governs the principle of the plane
itself.
[0043] The jamming of the weapon is then unavoidable, the user
having no possibility to compress the segments inside their housing
to support the introduction of the chuck into its chamber, any new
movement attempt of the cylinder head leading to jamming.
[0044] More hazardous yet is the ammunition destruction risk by
planning effect from the segments. One easily imagines the effects
of scrapers on a compacted powder propellant. Probably in order to
mitigate this risk the author introduces a busc on the lower face
of the cylinder head (level 44 of FIG. 2) whose function is
obviously to produce a recess of the cartridges at the recoil time
of the head of cylinder head in order to avoid any contact of the
segments with the aforementioned cartridges. The author does not
seem, moreover, to perceive the consequences of the necessary
recess that produces the passage of this busc on the cartridges
piled up in the magazine at the time of the movement of the
cylinder head, with risk of wedging and blocking of the aforesaid
cylinder head and destruction of the powder propellant.
[0045] Moreover, this busc could in no case avoid a contact of the
segments with the base of the ammunition in spite of the
presentation of the cartridges under a strong pitch angle. To be
convinced it is enough to simulate the recoil of the cylinder head
to note that there is an obligatorily contact, once the busc frees
the base of the aforesaid ammunition, of the segments with the
powder bread. The destruction of this last by scraping is then
extremely probable.
[0046] Finally, no extraction device for a chambered cartridge is
envisaged, exposing the user to the jamming of his weapon in the
event of ammunition failure. Obliging then to withdraw the charger,
open the cylinder head and push through the barrel mouth with a rod
to try to extract the cartridge with the known danger in the event
of long fire.
[0047] The author in addition does not specify anything regarding
the sealing chamber length, determining issue for the safety of the
weapon: a too short room involves a too hasty opening irremediably
exposing the user and the magazine cartridges to the extreme gases
of the detonation.
[0048] In conclusion, the Scanlon patent of weapon with vocation of
repetition shooting by mechanical percussion of caseless ammunition
corresponds to an incomplete study where the author proposes a
formula with dangerous sealing relying on the use of a fragile seal
composed of segments with irrational arrangement (a segment behind
the plastic joint), without damage of their inevitable scraping of
the collar entry and the ammunition, resulting in possible jamming
of the weapon, the whole without presence of an extractor, thus
exposing the user in the event of cartridge failure.
[0049] The present patent, on the other hand, mitigates these
design errors thanks to the use of mechanic or gas pressure to
master a uniform expansion of sized ring seals without leaks.
[0050] This formula guarantees moreover an absence of jamming
during the forward breech movement and an absolute reliability
against adverse temperatures. This patent ensures an electric
igniting as well as a cartridge extraction capability that the
Scanlon J. J patent cannot offer.
[0051] The patent FR 2,308,076 A (CIVOLANI Bruno) November 1976
describes a percussion system for weapon firing self-propelled
projectiles equipped with peripheral igniters as described into the
Italian patents N.degree.932,381 and 972,058.
[0052] These projectiles constitute real caseless ammunitions but
suffer from serious problems of trajectory stability and precision
caused by some body deformation resulting from the percussion on
the cylindrical wall of the projectile. The delay in opening the
chamber is obtained by the recess of a locking pivot, similar to
the chuck of the U.S. Pat. No. 3,345,770, whose diameter is similar
to the projectile's and length such that the opening intervenes
after the projectile exit the gun.
[0053] The sealing of such a room is not evoked by the author who
equips the chuck, on the enclosed figures, with radial grooves not
mentioned in description.
[0054] It is clear that the sole presence of these grooves could
not ensure a correct sealing effect, or, should they receive ring
seats, prevent a breech locking during forwards movement, making
the weapon dangerous of use.
[0055] Lastly, no mention of an extractor is made either in
description or in the attached drawings, leading to think that the
author, just like J. J. Scanlon with its U.S. Pat. No. 3,345,770,
did not know how to solve this crucial problem.
[0056] The principle of this weapon is limited to an automatic
operating mode since there a systematic percussion of the
projectile occurs as per the closing of the chamber. However the
forwards displacement of an inertial mass at the time of the
shooting involves an inexorable disturbance of the aiming sight
prejudicial to the precision. Weapons (MAT 49, UZI . . . )
functioning according to this principle are considered too unsharp
and either are withdrawn from service, or modified (UZI) to adopt a
delayed percussion mode.
[0057] The present patent describes, on the other hand, a
particularly precise caseless ammunition since the projectile is
not affected, during the shooting, by any incision or deformation
likely to alter its precision. The thus proposed weapon comprises a
perfectly sealed chamber equipped with an extractor of failing
ammunition.
[0058] The patent FR 849 727 A (Steyr-Daimler-Puch
Aktiengesellshaft) of February 1939 describes a weapon for cased
ammunition automatic shooting with systematic percussion at the end
of chambering said ammunition. This system suffers from the same
disadvantages of the patent FR 2,308,076 A (CIVOLANI Bruno), namely
a brutal projection of the cylinder to chamber the cartridge when
firing, considered unsharp because of the moving masses. For
information, this formula has been developed for machine-guns in
order to avoid auto-igniting (cook-oft) cartridges introduced in an
overheated chamber. This inconvenient was overcome by the immediate
percussion of cartridge primer as per the closing of the chamber.
The breech/barrel solidarisation system of the patent FR 849,727 is
commanded by the recoil under gas pressure tapped downstream the
barrel of a piston interdependent of the striker and actuating the
blocking/releasing of mobile bolts.
[0059] This system is particularly complex since it relies on
mechanically driven spigots by the displacement of the striker with
the inevitable problems of abrasive wear which this solution
involves. If the command of the drawer piston ensuring the movement
of the striker is well carried out by gas tapping, the principle of
this patent requires a bulky architecture increasing appreciably
the size of the weapon as much as its weight at a rate proportional
to the number of elements (shirt & piston parallel to the
cylinder head, ducts . . . ). Thus, this solution requires a long
driving gas tube along the barrel to tap said gazes at the
extremity right before the barrel mouth.
[0060] Still more surprising is the absence of extractor in the
description or in the joined drawings, leaving the reader with the
feeling that the author, just like J. J. Scanlon (U.S. Pat. No.
3,345,770) and CIVOLANI Bruno (patent FR 2,308,076 A) did not know
to solve this crucial problem with its formula. We will not
reconsider the effects of such negligence in case of ammunition
failure.
[0061] Consequently the patent FR 849,727 suffers from a complexity
of its mechanical locking device with subjacent risk of wear, a
consequent number of parts, a maladjustment to the shooting of
caseless ammunition, an inaccuracy resulting from the late
chambering the ammunition and an incapacity to extract a failing
ammunition.
[0062] The present patent describes, on the other hand, a
breech/barrel locking system by spigots driven by gases directly
tapped at the cartridge basin of head cylinder. This formula
removes any additional piping, piston, shirt and other accessories,
proves to be particularly lights easy and economic to implement (a
simple milling is enough), and does not involve any weapon size
increase.
[0063] This provision has the enormous advantage of avoiding any
risk of blocking which could result from the modification of a
tenon due to wear. Finally, the suggested formula uses caseless
ammunitions that can be extracted in the event of failure which the
patent FR 849,727 is unable to realize.
[0064] The patents 79 06,106, 83 07602 & 83 07603 of Heckler
& Koch describe a caseless rifle whose chamber sealing system
is ensured by a particularly complex device based on the
180.degree. rotation of the chamber. The cartridge supply is
carried out by gravity, leading to possible misalimentation of the
weapon when tilted. The rotation of the chamber (borrowed from the
principle of old water taps) does not guarantee any sealing against
propellant gases free to go upwards the feeder canal. This formula
involved a great complexity for the chamber slewing gear and was
abandoned.
[0065] The patent FR 2,082,183 A (Manufacture Meca co. Mo), March
1970 described a safety device locking the weapon trigger under a
pressure exerted on the back of the and forwards said trigger,
causing the engagement of a transverse push rod for unlocking. This
system relies on a "floating" assembly of the trigger with no
rotation axis but using only supports via embossing: this formula
prohibits any possibility of adjusting the trigger stiffness and
limits its deployment to the sole weapons equipped with traditional
firing pin, thus perfectly unable to answer the requirements of the
weapons with electric priming. The presence of the bolt on a single
side of the weapon prohibits any possible ambidextrous use and,
simultaneously, deprives the user from the perception of this
safety when approaching the weapon on the opposite side.
[0066] The present patent, on the other hand, integrates a trigger
safety device compatible with electric mechanisms and perfectly
ambidextrous, activated by a simple forwards rotation and having
the particular advantage of being immediately visible and this,
whatever might be the weapon side.
[0067] U.S. Pat. No. 5,705,763 (Jorge A. LEON) January 1998
describes a device allowing for turning a semi-automatic weapon
into an automatic one. Addressed to semi-automatic weapons with
mobile cylinder head and mechanical percussion, this device allows
a fire selection by a particular positioning of the trigger using a
pressure exerted at the back and forwards so as to produce a swing.
The purpose of this device is not to provide any safety function,
but simply to produce a full automatic fire when the trigger is at
a certain position.
[0068] The present patent, on the other hand, proposes the use of a
forward trigger movement in order to block the aforementioned
trigger and is not to be confused with that of a semi-auto/full
auto selector.
[0069] The U.S. Pat. No. 4,833,808 A (Stravan TRAVIS) of May 1989
describes a recoil damper system comprising a co-cylindrical mass
with the barrel whose forwards projection is carried out by gases.
This device, envisaged to be adapted at the end of barrel,
increases the weight of the weapon and modifies its balance and
length. It requires moreover a perfect harmonization of the rifling
with those of the barrel in a particularly delicate assembly that
the author does not approach in spite of his important and
dangerous character.
[0070] This device limits are that of a counter-recoil one whose
effectiveness is closely related to the synchronization with the
aft movement of a breech cylinder head that the author does not
approach.
[0071] The present patent, on the other hand, stipulates: [0072] a
recoil absorber mechanism via a short backwards movement of the
barrel aiming at a solidarisation barrel/breech intended to ensure
an opening delay, [0073] a forward barrel extension telescopic
device to increase the power of the ammunition by carrying out an
expansible room.
[0074] In addition to compensating the effect of recoil, these
devices ensure a most different function from that of TRAVIS
patent.
[0075] The patent DE 90 17 151,9 U (FIELD R. C.), December 1990
describes a specific magazine/clip for caseless ammunitions,
compartmented into two separate funnels placed out of tandem. The
sequencing of the various compartments is carried out via
rocking-levers actuated by the first ammunition of each follower,
as per the end of the preceding. This device presents several
disadvantages, namely: [0076] impossibility to use other
ammunitions profile than rectangular, [0077] impossibility to
handload the compartments by the top of the magazine, requiring a
unpractical specific device and a feeding by the bottom, [0078]
risk of jamming the weapon by wedging of the feeding push (7) rod
in the magazine, prohibiting then any withdrawal from said
magazine, [0079] fragility of the rocking-levers (4) swivelling on
an axis arranged within a thin wall leading to possible jamming,
[0080] obligation to load the compartments in a precise order
(front, back then medium) under penalty of blocking the
rocking-lever of the compartments which would not have been
supplied under this rule, [0081] limitation of use of the magazine
to the sole weapon equipped with a push rod.
[0082] The present patent, on the other hand, describes the
operation of a magazine for caseless ammunitions comprising two
compartments easily and independently loadable, whose sequencing is
ensured by a mechanism located on the weapon which does not require
any push rod and its inherent jamming risk.
DESCRIPTION OF THE INVENTION
[0083] The invention is composed of a weapon specifically adapted
to the semi-automatic and automatic firing of caseless ammunitions.
The use of these ammunitions requires an electric ignition and a
specific chamber sealing device such as defined hereafter.
DESCRIPTION OF DRAWINGS 1 TO 28/28
[0084] Drawing 1/28 comprises 4 FIGS. (1/1, 1/2, 2/1 & 2/2)
describing the principle of a caseless ammunition equipped with a
solid propellant either positioned aft (1/1 & 1/2) or in a
telescopic mode (2/1 & 2/2).
[0085] Drawing 2/28 comprises 1 FIG. (3) presenting the seen from
above view of the cutaway gun unit/cylinder head/chuck with the
exactor mechanism.
[0086] Drawing 3/28 comprises 2 FIGS. (4 & 5) presenting the
cutaway of the gas tapping system at the cylinder head.
[0087] Drawing 4/28 comprises 4 FIGS. (6/1, 6/2, 6/3 & 6/4)
presenting the chamber sealing system by expansion of segment under
gas pressure tapped at the piston head.
[0088] Drawing 5/28 comprises 4 FIGS. (6/5, 6/6, 6/7 & 6/8)
presenting the chamber sealing system by expansion of segment under
gas pressure tapped at the periphery of the head of the piston.
[0089] Drawing 6/28 comprises 3 FIGS. (6/9, 6/10 & 6/11)
presenting the chamber sealing system by expansion of concentric
segments under gas pressure tapped at the periphery of the
piston.
[0090] Drawing 7/28 comprises 3 FIGS. (6/12, 6/13 & 6/14)
presenting the chamber sealing system by expansion of encased
segments. FIG. 6/12 presents a longitudinal cross-section of the
head of piston, FIG. 6/13 presents the side view of the external
segment bayonet, FIG. 6/14 presents the top view of the assembly of
two encased segments (41 quarter) and (41 quint).
[0091] Drawing 8/28 comprises 5 FIGS. (6/15, 6/16, 6/17, 6/18 &
6/19) presenting a sealing process based on a corolla working in
both expanding/contacting modes by a combined effect of variation
of curve and torsion of its section.
[0092] Drawing 9/28 comprises 7 FIGS. (6/20, 7/1, 7/2, 7/3, 7/4,
7/5 & 7/6) presenting the mechanisms of chamber sealing under
gas and mechanical expansion of segment.
[0093] Drawing 10/28 comprises 2 FIGS. (7/7 & 7/8) presenting
the delay mechanism at the opening of cylinder head/barrel by
spigots driven by gases and placed in the barrel (7/7) or in the
chuck (7/8).
[0094] Drawing 11/28 comprises 2 FIGS. (8 & 9) presenting the
cross-section of the weapon and its mechanism of short barrel
recoil, counter-trigger safety engaged.
[0095] Drawing 12/28 comprises 2 FIGS. (10 & 11) presenting the
cross-section of the weapon with the anti-recoil device and the
counter-trigger safety engaged.
[0096] Drawing 13/28 comprises 1 FIG. (12) presenting the
cross-section of the weapon with released trigger guard.
[0097] Drawing 14/28 comprises 1 FIG. (13) presenting the cross
section of the weapon with opened trigger guard.
[0098] Drawing 15/28 comprises 2 FIGS. (14 & 15) presenting the
magazine cross-section, the front compartment equipped with a
remaining cartridge and the aft compartment fully loaded, the
loading limitation device of the aft compartment and the process
for arranging the ammunitions in three piles.
[0099] Drawing 16/28 comprises 3 FIGS. (16, 17 & 18) presenting
the magazine cross-section when engaged in the weapon with front
compartment fully loaded, the head cartridge resting against the
cylinder head (chuck) and the ammunitions of the aft compartment
(17) kept down in their well under the action of the cartridges
stopper, the loading limitation device of the aft compartment
authorizing an additional recess.
[0100] Drawing 17/28 comprises 1 FIG. (19) presenting the
cross-section of the weapon magazine engaged, a remaining
ammunition in the front compartment and two kept inserted in the
aft compartment under the action of the coupling mechanism.
[0101] Drawing 18/28 comprises 1 FIG. (20) presenting a
cross-section of the weapon, the coupling mechanism before opening
with the hook locking the arm of the cartridge stopper.
[0102] Drawing 19/28 comprises 1 FIG. (21) presenting a
cross-section of the weapon and magazine compartments coupling
mechanism at the opening of the hook releasing the arm of the
cartridge stopper under the action of the front transporter
button.
[0103] Drawing 20/28 comprises 1 FIG. (22) presenting the
cross-section of the weapon with engaged magazine, front
compartment empty and aft one with two cartridges after release of
the cartridge stopper.
[0104] Drawing 21/28 comprises 1 FIG. (23) presenting the
cross-section of the weapon with its breech stopper device and its
quadruple locking mechanism: trigger guard, counter-trigger safety,
breech and clip well, prior installation of the locker.
[0105] Drawing 22/28 comprises 1 FIG. (24) presenting a
cross-section of the weapon and its quadruple locking mechanism:
trigger guard, counter-trigger safety, breech and clip well, locker
in place.
[0106] Drawing 23/28 comprises 1 FIG. (25) presenting the
rail-sight device for fast target acquisition and its adjustment
system per thumb screw.
[0107] Drawing 24/28 comprises 1 FIG. (26) presenting the retracted
telescopic barrel.
[0108] Drawing 25/28 comprises 1 FIG. (27) presenting the extended
telescopic barrel.
[0109] Drawing 26/28 comprises 1 FIG. (28) presenting the
cross-section of the electronic weapon with electric firing chuck,
fire selector, clip well, cartridge counter, fingerprint
recognition and fire release block, batteries and their
housing.
[0110] Drawing 27/28 comprises 1 FIG. (29) presenting a
cross-section of the electronic weapon comprising a roto-selector
for triggered fire sequences.
[0111] Drawing 28/28 comprises 1 FIG. (30) presenting the
organizational diagram of the electronic map for user
identification and fire command.
DESCRIPTION OF THE AMMUNITION
Drawing 1/28, FIG. 1, 1 bis, 2 & 2 bis
[0112] The weapon is adapted to fire any type and caliber of
caseless ammunition whose general form is cylindrical and comprises
an extraction groove at the aft. Thus, the ammunition can
indifferently be made out a front projectile (1/1 & 1/2)
coupled to a solidified (2) propellant at the back or be of the
telescoped (2/1 & 2/2, n.degree.13) type, i.e. composed of a
bullit (13) drowned into a body (14) of solid propellant with, at
the back, a receiving groove for the extractor (6) claw. The
aforementioned bullit may comprise at its back a basin (15)
containing an agent (5) intended to ignite the propellant and its
position in the gangue is such that it can be sealed by a
conducting and combustible cover (4).
[0113] This provision ensures an excellent protection of the primer
against any risk of misfire by building an anti-radiation cage of
the Faraday type. The exceptional compactness of the ammunition
thus obtained will be profitable to increase the fire power.
[0114] Note: an alternative ammunition (pl. 1/28, 1/2) with the
propellant coupled at the back may be obtained by prolonging the
cap into a skirt (3) covering said propellant and, moreover, the
extraction groove in order to prevent any propellant deterioration
in the event of violent ejection, in particular with high inertia
cartridges (large caliber for example). Any other formula aiming to
strengthen the extraction groove would follow the same logic.
Manufacturing Processes of the Ammunition
[0115] The propellant is either moulded at the back of the bullit
or around it in order to carry out a gangue (14) in a sole
operation. The primer is positioned first or after the propellant
over moulding, the conducting swatch being affixed at the end of
the operation in order to guarantee the best ammunition sealing.
This formula offers many advantages either in terms of cost
reduction as in terms of sealing efficiency. The addition of a
tracing mixture at the bottom of the bullit will favor an eye catch
only from the aft sector, accentuating the discretion when
firing.
Description and Operation of the Weapon (Drawings 2 to 28/28)
[0116] The chosen weapon for demonstration is preferentially but
not exclusively an automatic handgun, the principle of the
invention being possibly extended to all calibers and types of
weapons. The weapon operates according to a chamber sealing
principle using a piston cylinder head producing a delayed opening
during its back course. This sealing principle can be adapted to
any gauge of weapons (including artillery).
[0117] The weapons of traditional design use ammunition with case,
this last ensuring the chamber sealing during the course lapse of
time separating the firing from the exit of the ammunition of the
barrel. The delay in opening the breech is then generally obtained
by blocking the case in the chamber via a connection barrel-slide
maintained fixed during the travel of the ammunition in the
barrel.
[0118] In the case of caseless ammunition according to the
invention, the sealing and the opening delay, necessary to an
optimal output of the weapon, are simultaneously ensured by one or
more segments located at the periphery of a piston (18),
interdependent of the cylinder head, whose recoil is progressive in
a sealing chamber (62).
[0119] This chamber (62) is in the prolongation and contiguous to
the chamber of ammunition (61) comprising, discretionary: [0120] a
receiving housing for raising (59) the extractor from the
ammunition groove, [0121] a vent (90) for propellant gas tapping
located close to the chamber entry, and the aforementioned piston
chamber (62) comprising, as required, housing (56 bis) for
solidarisation spigots between barrel and piston.
[0122] This solution guarantees an absolute safety by designing a
perfectly sealed chamber during the firing, suppressing any
specific risk inherent to the current solutions who rely on the
fragile strength of a case too often sollicitated by several
reloading.
[0123] As a matter of fact weapons with cased ammunitions show a
conceptual weakness generally ignored by users: their strength
during the firing follows the principle of resistance of a chain,
subordinated to that of its weakest link. The case is, with many
regards, this weakest link.
[0124] The case acts not only as a seal when it is plated against
the walls of the chamber at the beginning of the burst, but bears
the whole load at its aft part (base). But, this part is, on the
majority of the current automatic weapons, precisely outside the
chamber conditioning its sealing effect to its sole resistance.
[0125] One consequently measures the importance of the risk to
users that the formula exposes, and whose logic of case is
historically borrowed from revolvers who, in turn, guarantee a
better resistance since the bottom of the case is drowned into the
revolving chamber and is fully supported by the shield (back of the
revolving barrel) during the shot.
[0126] Users of automatic weapon are therefore exposed to the risks
of cracks at the level of the primer cupola as well as the case
wall itself, in particular at the base level, and to the terrible
release of extreme gases which follows. Many listed accidents after
successive reloads are there to testify it.
[0127] The weapon according to the invention ensures, on the other
hand, a perfect firing safety based on a technique of total
drenching the ammunition by a piston in a chamber whose sealing is
ensured by a self-expansible seal during the shooting. This formula
offers the resistance of the thick steel walls of the piston and
chamber with no comparison with that of brass cases.
[0128] The weapon uses, in a first operating mode, a barrel fixed
to the frame and is thus composed of a restricted number of parts.
This characteristic should trigger important economic repercussions
in terms of maintenance, production cost, reliability and rate of
fire.
[0129] The weapon includes two principal parts (drawings 2 to
28/28):
[0130] 1--The slide/breech unit or mobile cylinder head. [0131]
(16) slide/breech or mobile cylinder head, [0132] (17) chuck of
cylinder head.
[0133] The chuck of cylinder head comprises the body of piston and
the skirt: [0134] (18) piston, [0135] (20) skirt, [0136] (20 bis)
head of skirt, [0137] (21) extractor, [0138] (22) extractor with
foot, [0139] (23) extractor push rod, [0140] (24) extractor push
rod spring, [0141] (25) igniter/ejector damper, [0142] (26)
striker/valve, [0143] (27) igniter/ejector, [0144] (28) insulator
of igniter, [0145] (29) igniter spring, [0146] (30) extension of
igniter/ejector, [0147] (39) longitudinal channel of gas supply
(communicating with 40), [0148] (40) radial channel for gases
(communicating with 39), [0149] (40 bis) gas supply groove
(communicating with 42 (a)), [0150] (40 ter) light or crenel for
gas supply, [0151] (40 quarter) head of piston, [0152] (41) ring
seal, [0153] (41 bis) ring seal with trapezoidal profile, [0154]
(41 ter) ring seal with dissymmetrical trapezoidal profile, [0155]
(41 quarter) internal segment with right angles profile, [0156] (41
quint) external segment with right angles profile, [0157] (41 six)
closed expansible annular segment, [0158] (41 sept) closed corolla
ring seal, [0159] (41 oct) rotulant corolla, [0160] (41 nove)
rotulant corolla with crown, [0161] (41 ten) crown of corolla,
[0162] (41 eleven) piston with integrated rotulant corolla, [0163]
(42) segment or corolla housing, [0164] (42 bis) groove for gas
circulation, [0165] (42 ter) pin, [0166] (42 quart) housing groove
for segment or corolla base, [0167] (42 quint) sealing shoulder,
[0168] (42 six) shoulder of sealing, [0169] (42 oct) staging disc
for corollas, [0170] (42 nove) conical shoulder for corolla crown
clearance, [0171] (43) longitudinal gas channel opening, [0172]
(44) central sleeve, [0173] (44 bis) head of central sleeve, [0174]
(44 ter) central sleeve spring, [0175] (45) sealant abutment of
central sleeve, [0176] (45 bis) conical bearing, [0177] (45 ter)
conical bearing, [0178] (45 quarter) stage sits of expansible disc,
[0179] (46) expansible disc, [0180] (47) spring-pump, [0181] (48)
conical bearing sealing the ammunition housing, [0182] (50) housing
of the push rod unit of extractor (23), spring (24) and ejector
abutment (25), [0183] (51) sealing cone for chuck sleeve, [0184]
(52) communication port with the channels (39 & 40) of gas
supply, [0185] (54) spherical tenon, [0186] (54 bis) ball, [0187]
(55) conical tenon, [0188] (56) housing for locking spigots, [0189]
(56 bis) housing for chamber spigots, [0190] (56 ter) slide tenon
housing.
[0191] 2--The frame unit with barrel and magazine: [0192] (57)
pusher spring, [0193] (58) barrel rifling entry, [0194] (59) slope
for raising the extractor, [0195] (60) barrel, [0196] (61)
ammunition chamber, [0197] (62) sealing chamber and piston housing,
[0198] (63) frame/carcass, [0199] (64) trigger, [0200] (65) trigger
return spring, [0201] (65 bis) counter clockwise trigger return
spring, [0202] (66) trigger guard bolt, [0203] (66 bis) warp end of
trigger guard bolt, [0204] (67) housing for warp end of trigger
guard bolt, [0205] (67 bis) circular cam, [0206] (67 ter) setback,
[0207] (68) counter-trigger, [0208] (69) counter-trigger housing,
[0209] (70) counter-trigger return spring, [0210] (77) abutment for
ejection, [0211] (78) slide course abutment, [0212] (78 bis) slide
arrester, [0213] (78 ter) tenon notch, [0214] (79) lever for
magazine bolt, [0215] (80) hook for magazine bolt, [0216] (81) fire
selector, [0217] (81 bis) fire selector lever, [0218] (90)
counter-recoil gas port, [0219] (91) radial gas channel, [0220]
(92) counter-recoil gas tube, [0221] (93) gas vent, [0222] (94)
slide gas tube obturator, [0223] (95) magazine with two tandem
compartments, [0224] (95 bis) inclined to X degrees side wall of
magazine, [0225] (95 ter) inclined to Y degrees side wall of
magazine, [0226] (96) lips for both magazine compartments, [0227]
(97) front magazine compartment, [0228] (98) aft magazine
compartment, [0229] (98 bis) central inter-compartments wall,
[0230] (98 ter) driving slit for aft conveyer pin, [0231] (99)
front transporter, [0232] (100) aft transporter, [0233] (100 bis)
aft transporter pin, [0234] (101) transporter button, [0235] (102)
hook arm of cartridge stopper, [0236] (102 bis) cartridge stopper
hook pin, [0237] (102 ter) cam for opening the cartridge stopper
hook, [0238] (103) aft compartment cartridge stopper, [0239] (103
bis) horizontal abutment for cartridge stopper, [0240] (103 ter)
locking-arm of cartridge stopper, [0241] (104) return spring for
cartridge stopper, [0242] (105) receiving notch for magazine bolt
hook, [0243] (105 bis) conveyer abutment, [0244] (105 ter) back
compartment capacity limiter strip, [0245] (106) capacity
limitation bar for the back compartment, [0246] (106 bis)
limitation bar return spring, [0247] (106 ter) receiving slit of
the back conveyer pin, [0248] (107) barrel bedding, [0249] (108)
receiving grooves for the barrel guide rails, [0250] (109)
horizontal rails for barrel guidance, [0251] (110) shock absorber,
[0252] (110 bis) pusher spring, [0253] (111) bayonet abutment ring
for barrel course, [0254] (112) bayonet spigots for ring fixing,
[0255] (113) locker housing, [0256] (114) removable locker, [0257]
(115) magazine well locker, [0258] (115 bis) warp end of magazine
well locker, [0259] (116) return spring for magazine well locker,
[0260] (117) U shaped aiming rail, [0261] (118) thumb screw, [0262]
(118 bis) clicker, [0263] (119) connecting part between aiming
rail/thumb screw, [0264] (120) front sight, [0265] (121) circlips
between connection part/aiming rail, [0266] (122) pivot of aiming
rail, [0267] (123) substrate applied to the front face of the
trigger, [0268] (124) electronic firing chuck, [0269] (125) master
switch, [0270] (125 bis) rotating fire selector, [0271] (125 ter)
data routing wire, [0272] (125 quart) routing wire from the
trigger, [0273] (126) contactor for single fire, [0274] (127)
contactor for burst fire, [0275] (128) micro-switch for cylinder
head closure, [0276] (129) contactor for type of magazine
identification, [0277] (130) elevation switch of front conveyer
(full & empty), [0278] (131) elevation switch of back conveyer
(full & empty), [0279] (132) display, [0280] (133) central unit
and biometrical identification module, [0281] (134) battery, [0282]
(135) storage of authorized users prints, [0283] (136) storage of
habilitant users prints, [0284] (137) port, [0285] (138) internal
telescopic barrel, [0286] (138 bis) internal barrel shoulder,
[0287] (138 ter) internal barrel, [0288] (139) barrel bedding,
[0289] (140) external barrel, [0290] (140 bis) external barrel
shoulder, [0291] (140 ter) internal shoulder, [0292] (141) return
spring, [0293] (142) abutment for telescopic barrel, [0294] (143)
conical collector. Chamber Sealing Process First Mode (Drawing
4/28, FIG. 6/1 to 6/4):
[0295] In a first mode of mastering the chamber sealing, the chuck
skirt (20) comprises a receiving housing (42) for only one (41) or
a couple (FIG. 6/3) of sealing segments (41 quart & quint).
This housing (42), made up of a circumferential groove whose size
and section are adjusted with that of (or) the segment(s), is
characterized in that it incorporates a second concentric and
deeper groove (42 bis) for gas circulation, comprising radial
channels or openings (40) communicating with channels (39) parallel
to the central axis of the piston and emerging in the receiving
basin for cartridge. The segment or the couple of ring seals (41,
41 bis, quart & quint) adopts a suitable section: square (41),
trapezoidal symmetrical (41 bis) or dissymmetrical (41 ter), in
angle, square or any other adapted formula and are preferentially
but not exclusively of the open bayonet (6/2 & 6/3) type or
other and characterized in that, in the case of a couple, their
assembly is concentric and superimposed i.e. one inside the other
and such as, retrace in home position inside the receiving groove,
the external diameter of the segment or couple of segments remains
lower than the bore or diameter of the piston. The curve at rest of
the aforesaid segments is such as they marry perfectly, during the
expansion, the receiving chamber of the piston.
[0296] The superimposed segments, from which the respective
thicknesses and heights can be different, are assembled indexed so
that the opening of one be not in front of that of the other. For
this purpose, each segment comprises at the higher level of its
opening a notch of size corresponding to that of a pin (42 ter).
The two segments are assembled in such way that their respective
notches cooperate with the radial pin (42 ter) corresponding placed
in the receiving groove and ensuring their indexing at
180.degree..
[0297] In the case of segments with section at right angles or L,
the indexing, preferentially at 180.degree., can be obtained either
by the presence of an element, pin type, interdependent of one of
the segments and cooperating with the opening of the other which
comprises a notch of reception of this element, the two segments
being then free mounted in their receiving groove, or by the
presence of pins (FIG. 6/12, 42 ter) placed in the receiving groove
in such way that their head be respectively projecting into the
bayonet opening of the corresponding segment. For this purpose, the
openings will comprise a notch intended to accommodate the
aforementioned heads of pins.
Operating Principle
[0298] At the beginning of the burst the propellant gases borrow
the conducts (39 & 40) leading to the internal face of the
segments (41, 41 bis, ter, quart & quint) that pressure,
uniformly distributed by circulation in the second groove (42 bis),
dilates radially which causes to plate the segments against the
wall of the chamber (62).
[0299] The sealing is then ensured by the combination of: [0300]
the valve effect between a plane face of the (or) segment(s) and
the side wall of the piston groove, [0301] the contact between the
peripheral (under the pressure of gases) uniformly circumferential
stage of the segment (external) and the cylinder bore, [0302] the
systematic obturation, by the opposite indexing of the segments, of
any window that may arise at the opening of the couple of segments
during their expansion, and perdure as long as the pressure of
propellant gases is exerted, i.e. during the bullit travel in the
barrel and the simultaneous blowback of the piston in its
chamber.
[0303] As soon as the bullit leaves the barrel the pressure falls
instantaneously, the elasticity of the segment (or couples of
segments) causes its/their retraction inside the groove and
suppresses any risk of blocking the piston at the entry of the
receiving chamber (62) during the front movement of the cylinder
head. The dilatation of the segment (or couples segments)
guarantees a perfect cartridge (61) chamber sealing during the back
movement of the piston.
[0304] In order to guarantee a great longevity to the segments,
these will be made out of an elastic material (UE9P, steel, cast
iron bronzes . . . ) able to resist the efforts of temperature.
[0305] Frictions of the segment in contact with the wall of the
cylinder may be reduced by the adoption of a slightly convex
external face (some 1/100 of millimetre) and the application of
self-lubricating treatment (titanium nitride, Diamond Like Carbon,
amorphous carbon, molybdenum, graphite . . . ) suitable.
[0306] This device constitutes a true regulating system for chamber
opening delay under gas pressure. The advantage of this formula is
to allow the weapon "to digest" a large variety of ammunition with
different masses, without requiring modification of the barrel or
mass of the cylinder head, and taking care, however, that the
length of back course of the piston in its chamber be sufficient
enough for the type of ammunition considered
Second Mode (Drawings 5/28, FIGS. 6/3 & 6/5 to 6/8):
[0307] In a second mode of mastering the sealing, the piston head
comprising a housing (42) for a single segment or a couple (FIG.
6/3) of concentric and superimposed ring seals (encased one in the
other) is characterized in that said housing (42) of the segment(s)
is dug with a secondary concentric and deeper groove (42 bis)
favoring gas circulation and that said housing bears longitudinal
grooves (40 bis) in a variable number and symmetrically distributed
around the periphery of the piston head, the aforementioned grooves
(40 bis) emerging at the level of the front face of the piston in
order to ensure the distribution of gases towards the groove (42
bis) with which they communicate.
[0308] The segment or the couple (FIG. 6/3) of ring seals (41, 41
bis, ter, quart & quint) adopts a suitable section: square
(41), trapezoidal (41 bis & ter), in angle, (41 quarter &
quint) or any other adapted formula and are preferentially but not
exclusively of the bayonet (FIG. 6/2) type or other and
characterized in that they are, in the case of a couple, concentric
and superimposed i.e. one inside the other and such as, retracted
in home position inside the receiving groove, the external diameter
of the segment or couple of segments remains lower than the bore or
diameter of the piston. The curve at rest of the aforesaid segments
is such as they marry perfectly, during the expansion, the
receiving chamber of the piston.
[0309] The superimposed segments, whose respective thickness and
height can be different, are assembled indexed so that the opening
of the one is not compared to that of the other. For this purpose,
each segment comprises at the higher level of its opening a notch
of size corresponding to that of a pin (42 ter). The two segments
are assembled in such way that their respective notches cooperate
with the radial pin (42 ter) corresponding placed in the receiving
groove and ensuring their indexing at 180.degree..
[0310] In the case of segments with section at right angles or L,
the indexing, preferentially at 180.degree., can be obtained either
by the presence of an element, pin type, interdependent of one of
the segments and cooperating with the opening of the other which
comprises a notch of reception of this element, the two segments
being free mounted in their receiving groove, or by the presence of
pins (FIG. 6/12, 42 ter) placed in the receiving groove in such way
that their head be respectively projecting into the bayonet opening
of the corresponding segment. For this purpose the openings will
comprise a notch intended to accommodate the aforementioned heads
of pins.
Operating Principle
[0311] At the beginning of the burst, the propellant gases follow
the peripheral grooves (40 bis) of the piston head and exert a
pressure uniformly distributed (symmetry of the grooves) on the
upper side face of the segment(s) (41, 41 bis, 41 ter, quart &
quint) as well as on their internal face by circulating in the
groove (42 bis), which causes the segment(s) to plate against the
lower wall of the groove housing (42) and to dilate radially
against the wall of the chamber (62) for a perfect sealing. In
order to facilitate its expansion under the effect of the gas
pressure surrounding the piston head, the segment or couple of
segment may adopt a trapezoidal profile (41 bis) symmetrical or
dissymmetrical (FIG. 6/7, 41 ter) assembled such as its tilted face
be directed towards the piston head, the smaller side (or top)
corresponding to the internal face of said segment.
[0312] The receiving groove (42) will adopt a corresponding
profile. As per the expansion of the segment (or couple of
segments) under the effect of gases brought through the
longitudinal grooves, the tilted side face (trapezoidal) of the
segment (or couple of segments) trap the peripheral gases which
surround the piston head, this ensemble exerting then a pressure
which tends to plate the segment (or couple of segments) in a
perfectly uniform way against the wall of the chamber and the
sidewall of the piston grove ensuring thus the sealing.
[0313] As soon as the bullit leaves the barrel the pressure falls
instantaneously, the elasticity of the segment (or couple of
segments) causes its retraction inside its groove and suppresses
any risk of blocking the piston at the entry of its receiving
chamber (62) during the next forwards movement of the cylinder
head.
[0314] In order to guarantee a great longevity to the segments,
those will be made out of an elastic material (UE9P, steel, cast
iron bronzes . . . ) able to resist the efforts of temperature.
Frictions on the cylinder wall may be reduced with the adoption of
a slightly convex external sidewall (some 1/100 of millimetre) and
the application of suitable self-lubricating treatment (titanium
nitride, Diamond Like Carbon, amorphous carbon, molybdenum,
graphite . . . ).
[0315] This device constitutes a true regulating system for chamber
opening delay under gas pressure. The advantage of this formula and
to allow the weapon "to digest" a large variety of ammunition with
different masses, without requiring modification of the barrel or
mass of the cylinder head, and taking care, however, that the
length of back course of the piston in its chamber be sufficient
enough for the type of ammunition considered.
Third Mode (Drawings 6/28, 69, 6/10 & 6/11):
[0316] In a third mode of mastering the sealing, the cylinder head
of the piston is characterized in that the cartridge receiving
basin comprises radial lights (channels) or crenels (40 ter),
symmetrically arranged at the periphery, ensuring the communication
between the interior of said basin and the circumferential housing
groove (42) of a segment or a couple of concentric and superimposed
segments (FIG. 6/3), located around the piston at the level of said
basin. The segment(s) housing (42) is sized and section adjusted to
said segment (s). In the case of use of radial lights, a variable
number of vertical grooves (40 bis) is symmetrically distributed at
the periphery of the piston head to ensure the distribution of
gases at the level of the front face of the aforesaid piston in
order to forward them to the back face of the segment (or couple of
segments) and to combine their efforts with the gases coming from
the basin through the lights. A groove (42 bis) for gas circulation
may be arranged if necessary to combine the advantages of the first
and second modes. The segment or the couple of ring seals (41, 41
bis, ter, quart & quint) adopts a suitable section: square
(41), trapezoidal, in angle, (41 quart) or any other adapted
formula and are preferentially but not exclusively of the open
bayonet type (FIG. 6/2) or other, in the case of a couple mounted
concentric and superimposed i.e. one inside the other, and
characterized in that they are retracted in home position inside
the receiving groove, the external diameter of the segment or
couple of segments remaining lower than the bore or diameter of the
piston. The curve at rest of said segments is such as to conform
perfectly, during the expansion, to the receiving chamber of the
piston.
Operating Principle
[0317] At the beginning of the burst the propellant gases borrow
the peripheral lights or crenels (40 ter) of the cartridge
receiving basin and immediately exert a uniformly distributed
pressure (symmetry of the crenels and lights) on the internal
peripheral side of the segment or couple of segments (41 quart
& quint) as on the radial face which is directly perpendicular
in the case of a section in angle or square, which causes to plate
the segment or couple of segments against the lower side of the
groove housing (42) and to radially dilate them against the wall of
the chamber (62) for a perfect sealing. No leakage of gases through
the segments openings during their expansion is possible since
their concentric, superimposed and indexed assembly at 180.degree.
ensures a reciprocal and automatic obturation.
[0318] As soon as the bullit exits the barrel the pressure falls
instantaneously, the elasticity of the segments causes their
retraction inside their groove and removes any risk of blocking the
piston at the entry of the receiving chamber (62) during the next
forwards movement of cylinder head.
[0319] In order to guarantee a great longevity to the segments,
those will be made out of an elastic material (UE9P, steel, cast
iron bronzes . . . ) able to resist the efforts of temperature and
friction. A self-lubricating treatment (titanium nitride, Diamond
Like Carbon, amorphous carbon, molybdenum, graphite . . . ) may
also be applied.
[0320] This device also constitutes a true regulating system for
chamber opening delay under gas pressure. The advantage of this
formula and to allow the weapon "to digest" a large variety of
ammunition of different masses, without requiring modification of
the barrel or mass of the cylinder head, and taking care, however,
that the length of back course of the piston in its chamber be
sufficient enough for the type of ammunition considered.
[0321] Note: (drawing 7/28, FIG. 6/12 to 6/14): the sealing of the
segments expansion device according to the above mentioned modes
may be increased by the use of two segments (41 quart & quint),
with a profile preferentially but not exclusively out of square or
L and with bayonet opening (FIG. 6/13), concentric assembled and
indexed at 180.degree. such as the short (or horizontal) branch of
their section penetrates in a circumferential groove (42 quart) dug
on the lower edge of the receiving groove (42) of said segments and
forming a shoulder (42 quint). When the piston recoils the friction
of the external segment (41 quint) against the wall of the
receiving cylinder, whose effect could be reduced by the adoption
of a slightly convex outside (some 1/1000 of millimetre) and the
application of treatment (thermal, surface . . . ) suitable, exerts
a force tending to lift up the segments towards the head of piston.
The short branch of the L section of the internal segment (41
quarter) then bumps into the shoulder (42 quint) forming thus a
sealing and preventing any gas leakage circulating at the back of
the segments.
[0322] The internal segment (41 quart) preferentially comprises a
bayonet opening on the short branch of its section such that its
opening (h) be shorter than the opening of said segment once
dilated on the shoulder (42 quint). The external segment (41 quint)
comprises a bayonet opening on its two branches so that a perfect
sealing be ensured by the couple of segments independently of the
friction effects tending to lift it up or the gas pressure tending
to plate it on the lower face of the receiving groove.
[0323] The two segments thus assembled operate a sealing effect
resulting from a double action: [0324] against the piston
peripheral gases blocked by the perfect contact of the external
segment and its bayonet against the chamber wall, [0325] against
circulating gases at the back of the segments, blocked by the valve
effect ensured by the short (or horizontal) branch of the segments
(41 quart & quint) playing between the shoulder (42 quint) and
the lower side face of the groove (42) according to whether: [0326]
the pressure of gases pushes the two segments towards the bottom of
the piston and plate their short branch against the aforementioned
lower side face (42), the bayonet of the external segment combined
with the internal segment prohibiting any escape then, [0327]
frictions of the external segment (41 quint) against the chamber
tend to lift up the two segments whose short branches (horizontal)
bumps into the shoulder (42 quint) to produce a perfect mechanical
sealing.
[0328] The segments expansion device according to these modes, in
particular the latter since it ensures a perfect sealing, is likely
to find application in the field of the spark-ignition engine.
[0329] The head segment of the piston, in permanent contact with
the chamber wall, would benefit from an addition of compressive
force against the lower side of its housing groove, reinforcing the
chamber sealing and preventing any risk of uncontrolled vibratory
mode, in particular when the piston reaches its highest point
(inertia of the segment) at high regime.
Fourth Mode (Drawings 8/28, FIGS. 6/15, 6/16 & 6/17, 6/18, 6/19
& Drawing 9/28, FIG. 6/20):
[0330] In a fourth realisation mode, compatible with any of the
three aforementioned ones (gas tapping at the cartridge basin level
by channels (39, 40), grooves (40 bis), lights or crenels (40 ter)
radial . . . ), the sealing relies on the use of one or more
rotulant corollas (41 sept, 41 oct, 41 nove), assembled in series
on the piston, the opening directed towards the head, and
characterized in that: [0331] the thickness of the section is
regularly decreasing, according to a preferred but not exclusively
curved generating line, ranging from the base (B) to the upper edge
(O) in order to favor, under gas pressure or a narrowing in the
chamber (62), an elastic radial variation of the curve combined
with a torsion of the complete section (FIG. 6/17) which swivels
around the round interior edge (FIG. 6/15, B) of its base, [0332]
the external face comprises an angular sector (6/15), on both sides
of greater bore point (C), whose radius is advantageously close to
that of the receiving chamber in order to favor a peripheral
sealing contact of the rotulant type, [0333] the external face may
integrate a crown (41 ten) whose opening direction is opposed to
that of the corolla (41 nove) and such that the bore at rest of its
larger diameter point (D) is higher than that of the convexity
arrow (C) of the aforesaid corolla and that of a narrowing of the
receiving chamber (62), [0334] the internal edge (FIG. 6/15, B) of
the section base is preferentially circular in order to provide a
rotulant sealing contact ensuring a valve effect between the walls
(FIGS. 6/16 & 6/18, 42 quint & 42 six) of its housing
groove (42), [0335] outside upper edge bore is, at rest (FIG. 6/17,
point 0) most equal to that of the piston.
[0336] Each corolla (6/16 & 6/18) is assembled with a certain
lateral and longitudinal play in a piston housing (42) comprising
on the level of its lower edge a receiving groove (42 quart) of the
base or foot of the corolla in order to facilitate the angular
torsion movement of the section as well as the rotulant contact of
the internal rounded edge (FIG. 6/15) of said base with the lower
shoulder (42 six) of the groove (42 quart) or its upper conical
shoulder (42 quint).
[0337] The corolla (FIG. 6/16, 41 sept) has the advantage of
ensuring a sealing effect during an expansion as well as a radial
contraction. This property makes it possible to exploit the
relative tolerances of machining piston/room/corolla so that the
collar (FIG. 6/15, C) of the corolla is advantageously in contact
with the chamber wall when the piston reaches its course end in its
housing (62). For this purpose, the bottom of the chamber (62) is
characterized in that it comprises a conical narrowing/contracting
(FIG. 6/16, A), rectilinear or rounded, such as the machining
allowances between piston/chamber be equal or lower to that of
maximum bore (FIG. 6/15, point C) of the corolla when the piston is
in end of course.
[0338] This provision guarantees a contact (FIG. 6/16) between the
corolla and the chamber wall (62) as per full closing of the
cylinder head, suppressing any leak risk which could result from a
delay in expansion of the aforesaid corolla when gas pressure is
building.
[0339] In order to avoid any introduction risk of dust, sands
grains or other impurities likely to scrape the piston receiving
chamber, a corolla (FIG. 6/16, 41 oct) may advantageously be
assembled head-digs with the sealing corolla (41 sept) in order to
constitute a scraper corolla such as the generating line at the
level of its convexity arrow be in contact with the entry edge of
the chamber as soon as the cylinder head is fully closed. The
position of this corolla on the piston then ensures the role of
stopper sealing the entry of the room (62). In order to avoid any
scraping effect on the body of the ammunition, the expert will take
care that the bore at the level of the external upper edge (FIG.
6/15, point 0) of this corolla (41 oct) be not higher than that of
the piston, which does not prohibit that the maximum bore at the
level of the convexity arrow be so (few 1/100 of millimetre).
[0340] In the case of use of corollas (FIG. 6/18, 41 nove)
comprising a crown/ring (41 ten), the oversized bore of the latter
compared to that of a contracting (rectilinear conical . . . )
(FIG. 6/18, A) of all or part of the chamber length (62) provides
two functions: [0341] an initial torsion of the section during
progressive engagement of the aforesaid contracting (FIG. 6/18, A)
by the crown (41 dix) involving an increase in the bore of the
collar of the corolla (41 nove) until possible contact with the
wall of the chamber (62), [0342] an increase in the sealing effect
by simultaneous contact, at the time of the gas pressure rise,
between the generating contact line of the corolla (C) and its
crown (D) with the wall of the chamber (62), [0343] a scraping
effect by the crown (41 dix) during piston recoil.
[0344] FIG. 6/18 presents two corollas (41 nove) with annular
rings/crowns assembled one behind the other and separated by a disc
(42 oct), the head corolla undergoing, at the level of its crown
(41 ten) in contact with the narrowing/contracting (FIG. 6/18, A)
of the chamber (62), a torsion aiming to open it and plate its
collar against the chamber wall favoring an immediate sealing. The
second corolla not yet having engaged the chamber intake is in rest
position. A progressive contracting of the bore at the chamber
bottom makes it possible to initiate the mechanical opening of the
head corolla only when the piston is in its course end. A suitable
dimensioning of the second corolla and in particular of the bore of
its crown so that it be in contact with the chamber entry as soon
as the cylinder head is fully closed will ensure her role of
scraping stopper.
[0345] The disc (42 oct) separating two corollas mounted in series
advantageously comprises grooves (40 bis) on its periphery to feed
the lower corolla with gas in the event of rupture of the first
one. The lower edge (42 six) of the corolla housing (42) comprises
a conical shoulder (FIG. 6/18, 42 nove) favoring some crown (41
ten) play. The assembly of the corollas is made possible with the
real on in several parts (or stages) of the piston as indicated on
FIGS. 6/16 and 6/18, the upper or head part ensuring the double
busc protective role for corollas and segments as well as push rod
for cartridges during their introduction.
[0346] In order to prevent any variation in adjustment of the axis
of the piston with that of the chamber, the corollas are assembled
with a certain vertical and side play (FIG. 6/16) favoring their
perfect centering as soon as they get in contact with the chamber
wall.
[0347] The assembly side play of the corollas (41 nove) with crowns
(41 dix) is at least equal to their bore difference with the
piston's (causing the retraction of their contact zone with the
ammunition during the cylinder movement) in order to avoid any
scraping risk of said crowns on the ammunitions bodies.
[0348] Any axial misalignment of the piston is automatically
compensated by the rotulant machining of the crowns convex wall
ensuring the perfect contact of a generating line with the
chamber.
[0349] The nature of the invention would not be changed if the
profile or generating line of the section of the corolla were
different, for example rectilinear or if it would comprise two
secant branches or other.
Piston with Integrated Rotulant Corolla (Drawing 8/28, FIG. 6/19
& Drawing 9/28, FIG. 6/20):
[0350] A simplified realization of the sealing principle per
rotulant corolla can be obtained by integrating the base of the
corolla (41 eleven) into the lower part (17) of the piston or chuck
located behind the head (40 quart) comprising the cartridge basin
and the crenels (40 ter) for gas supply. The piston with rotulant
corolla can then easily be produced by machining the corolla in the
mass of material constituting the aforementioned piston with the
characteristics relating to the elasticity of the sole profile of
its section: [0351] the thickness of the aforesaid section
decreases regularly, according to a generating line preferentially
but not exclusively curve in order to support, under the gas
pressure or a contracting of the room (62), a radial elastic
variation, [0352] the external face comprises an angular sector
(FIG. 6/19), on both sides of the point (C) of greater bore, of
radius advantageously close to that of the receiving chamber in
order to support a peripheral bore sealing contact of the rotulant
type, [0353] the bore, at rest, of the external upper edge (FIG.
6/15, 0) is at most equal to that of the piston.
[0354] Any axial shift of the piston with integrated rotulant
corolla is automatically caught up by the rotulant part of the
external wall of the corolla ensuring a perfect generating contact
line with the wall of the chamber.
[0355] The corolla of the piston (41 eleven) can also comprise a
crown (41 ten) in a way identical to that previously exposed.
Operating Principle
[0356] At the beginning of the burst the propellant gases borrow
the channels (39, 40), grooves (40 bis), peripheral lights or
crenels (40 ter) of the cartridge basin of the piston head (40
quarter) and immediately exert a uniformly distributed pressure
(symmetry of said channels, crenels and lights) on the internal
wall of the corolla (41 sept, oct, nove & eleven) producing a
variation of its curve combined with the torsion of its section (41
sept, oct & nove) involving its uniform expansion and its
contact with the wall of the chamber (62) for a perfect sealing
resulting from a double action: [0357] against the peripheral gases
around the piston which are blocked by the perfect contact (FIG.
6/16) of a generating line (FIG. 6/15, C) of the rotulant zone
(and, if necessary, of a generating contact line of the crown 41
ten) with the wall of the chamber, [0358] against circulating gases
at the back of the corolla (41 sept, oct & nove), blocked by
the valve effect of the rotulant contact of the circular section of
the internal edge (FIG. 6/15, B) of the base of said corolla
playing between the lower shoulder (42 six) of the groove (42
quarter) and its conical upper shoulder (42 quint) according to
whether the pressure of gases pushes the corolla to the bottom of
the piston or that friction against the chamber tends to make it go
up.
[0359] As soon as the bullit leaves the barrel the pressure falls
instantaneously, the elasticity of the corolla makes it return to
its nominal diameter suppressing any risk of piston blocking at the
entry of the receiving chamber (62) for the next forwards movement
of the cylinder head. In the case of use of a corolla with crown
the return to the nominal diameter of the collar occurs only after
the leaving of the contracting zone of the chamber by the
piston.
[0360] Note: When the firing of the ammunition, the recoil of the
piston favors the deposit of fatty combustion residues of the
propellant on the walls of the chamber which are thus
autolubrified. This greasing effect will facilitate the
introduction of the piston and will increase the lifespan of the
segment.
[0361] The expert will adapt dimensions, materials and thicknesses
of the corolla to the acting pressures (several thousands of bars)
in order to advantageously combine intrinsic elasticity of torsion
of the section as well as its curve variation. He will also adapt
the number of corollas to be assembled in series one at the head
behind the other so as to, if necessary, offer a greater safety in
the event of inopportune rupture of the head one.
[0362] In order to guarantee a great longevity of the corollas and
pistons with integrated rotulant corolla (41 eleven), those will be
made out of an elastic material (UE9P, steel, cast iron bronzes .)
able to resist the efforts of temperature and friction. A
self-lubricating treatment (titanium nitride, Diamond Like Carbon,
amorphous carbon, molybdenum, graphite . . . ) may also be applied.
In order to increase the intrinsic elasticity of the corolla an
annealing of stabilization may be applied in order to solidify the
maximum bore at rest with a value lower than that obtained after
machining.
[0363] The radial elasticity of the corolla acts also as a wear
compensator in order to guarantee an always perfect contact of the
convex part with the wall of the chamber, in expansion as in
compression.
[0364] Note: The corolla (41 sept, nove & eleven) may naturally
be adopted in all the operating modes (one to seven) described in
this patent.
[0365] Application: jacks for high pressure and temperature fluid.
Spark-ignition engine. This type of corolla may naturally find
application in the two or four strokes engines when placed as
described, even immediately at the head of piston, in particular
according to the simplified formulation (drawing 8/28, FIG. 6/19
& drawing 9/28, FIG. 6/20) where it can then be directly
machined in the head of piston. The bore will be adapted in order
to be in permanent contact with the chamber wall. Dimensions, in
particular the thickness and the profile curve, will be adapted to
the lower compression pressure of the engines. The introduction of
the piston into the chamber for the assembly will naturally be
carried out by the top of the chamber in order to contract the
segment/corolla.
[0366] Having no opening, such a segment should appreciably
increase the compression output by producing an additional sealing
effect to the pressure of gases.
Fifth Mode (Drawing 9/28, FIGS. 713 & 7/4)
[0367] In a fifth mode of mastering the sealing, the piston (FIG.
7/3) of the cylinder head chuck comprising a housing groove (42)
for a segment or couple of ring seals is characterized in that it
is composed of a central sleeve (44) whose front face corresponds
to the bottom of the cartridge basin, spring pumps (or bars) (47)
positioned out of star around the central axis, an axial
ejector/electric igniter (27) and an extractor (22) of ammunition
articulated at the sleeve level and equipped with a foot
cooperating with the head valve ejector/lighter.
[0368] The segment or couple of ring seals (41, 41 bis, ter, quart
& quint, sept) is characterized in that its external diameter
at rest is such that it remains retracted inside its receiving
groove and does not exceed the bore or diameter of the piston.
[0369] The central sleeve, composed of two parts supporting the
assembly of the segment and solidarized by a pin, comprises two
conical stages (45 & 45 bis), the first simultaneously ensuring
the gas sealing and the role of course abutment of said sleeve and
the conical second (45 bis) one ensuring more particularly the role
of compression drawer for the spring-pumps. The housings of
spring-pumps (47) are laid out of star around the sleeve (44)
housing with which they communicate and emerge on the other side in
the housing of the segment (42 bis). The heads of the pumps are
resting against the interior side of the segment (a groove being
advantageously possibly arranged), their feet simultaneously
resting on the cylindrical part of the conical drawer stage (45
bis) of the sleeve. These pumps, once in place, also act as a
limiting abutment (anti-extraction) for the central sleeve.
[0370] An alternative (FIG. 7/5) to the preceding assembly may be
obtained by replacing the spring pumps by balls or spigots all
around the sleeve (44), especially arranged to this end, in the
housing groove o the segment (41) and mounted so as to be
simultaneously in contact with a conical stage (45 bis) of the
sleeve and the internal side of the aforesaid segment (41).
[0371] The sleeve may, moreover, advantageously comprise a second
conical stage (45 ter) on which breech/barrel solidarisation paired
balls or spigots rest, laid out of star in conical housings
preventing any escape of said balls or spigots, the aforementioned
housings matching female housings (56 ter) in the receiving chamber
of the piston.
[0372] The distance between the bottom of the cartridge basin and
the forehead of the ammunition chamber may be adapted so that the
recoil of the head sleeve (45) occurs at the end of the forwards
movement of the cylinder head, the aforementioned head butting
against the bottom of its housing under the action of the spring
(110). The ring seal (and possibly the breech/barrel solidarisation
balls or spigots) are then systematically expelled when the
cylinder head is closed.
[0373] The adoption of a shorter chuck, with no abutment of the
head against the bottom of its housing, will involve a gas pressure
operating mode. The expert will take care of the adjustment of the
bore of the chamber (62) with the optimal expansion dimension of
the segment (41) for the best sealing.
Operating Principle
[0374] When firing the ammunition (7/3) the propellant gases exert
an equivalent pressure at the back of the ammunition and on the
head of the sleeve/cartridge basin which recoils inside the
chuck/piston contracting then the return spring (44 ter).
[0375] The conical stage (45 bis) of the sleeve butts against the
symmetrical conical stage of the chuck (17) ensuring the internal
sealing of the chuck, as well as the conical shoulder (45) on the
symmetrical conical shoulder of the chuck (17), and exerts
simultaneously a radial pressure on the spring pumps which compress
and cause the uniform increase in the diameter of the ring seal by
plating it against the wall of the piston receiving chamber (62)
thus ensuring the gas sealing.
[0376] Simultaneously the piston moves back (except presence of a
mechanical system blocking the cylinder head/barrel) ensuring the
delay in chamber opening, the sleeve/basin remaining inserted in
the chuck until the pressure of gases stops (chamber opening). As
the pressure falls the sleeve/basin comes back to its initial place
under the effect of return spring (44 ter). The pumps get back to
their initial length under the combined action of the pressure of
the contracting segment and the return to the rest position of the
conical stage (45 bis) of the sleeve causing a lengthening of the
course of said pumps.
[0377] The segment then retracts in its housing back to its rest
position in order not to exceed the bore of the piston and not to
compromise its next introduction into the receiving chamber (62).
The electric igniter (27) ensures a quadruple function: sealing,
cartridge igniting, ejector and extractor ret spring. For this
purpose, the extractor (22) comprises a foot resting against the
conical part in valve shape of the igniter for its own recoil
function.
[0378] When the central sleeve is recessing, the spring pumps
ensure a quasi-constant pressure of the segment on the cylinder,
with no risk of tightening or blocking.
[0379] So as to ensure a radial distribution of optimal pressure
their number (higher than four) will be adapted by the expert and
their length will be such as when the sleeve is inserted and the
segment plated against the wall of the cylinder the aforementioned
pumps never overshoot their contraction limit.
[0380] In order to guarantee a great longevity to the segments,
they will be made out of an elastic material (UE9P, steel, cast
iron bronzes . . . ) able to resist the efforts of temperature.
Frictions of the segment on the wall of the cylinder may be reduced
by the adoption of a slightly convex outside (some 1/100 of
millimetre) and the application of self-lubricating treatment
(titanium nitride, Diamond Like Carbon, amorphous carbon,
molybdenum, graphite . . . ) suitable.
[0381] This device, in the case of a blowback cylinder head,
constitutes a true regulating chamber delay opening system by gas
pressure.
[0382] The advantage of this formula is to allow the weapon "to
digest" a large variety of ammunitions with different masses,
without requiring modification of the barrel or mass of the
cylinder head, by taking care however to check that the recoil
course of the piston be sufficient for the type of ammunition.
[0383] In the balls (FIG. 7/5) version the recession of the sleeve
(44) produces, if the option of breech/barrel solidarisation is
retained, a double effect: the expansion of the ring seal and the
aforementioned mechanical solidarisation.
[0384] When firing of the ammunition the propellant gases exert a
pressure equivalent at the back of the ammunition and on the head
of the sleeve/basin which recesses inside the chuck/piston by
contracting the return spring (44 ter). The conical stage (45) of
the sleeve (44) butts against the symmetrical conical stage of the
chuck (17) ensuring the internal sealing, simultaneously the
conical shoulders (45 bis and 45 ter) exert a radial pressure on
the balls or spigots which they are in contact with and cause:
[0385] the uniform increase in the diameter of the ring seal which
conforms to the wall of the cylinder (62) of piston chamber thus
ensuring the perfect gas sealing, [0386] the head cylinder/barrel
solidarisation by displacement of balls (54) or spigots in the
matching housings (56 ter) of the piston.
[0387] It should be noted that the halts mechanisms of expansion of
the segment and the solidarisation head cylinder/barrel device are
dissociable and may be assembled separately or combined with
others. In the same way, the expert will appreciate the
advisability of substituting the balls by spring pumps for the
sealing.
Sixth Mode (Drawing 9/8, 7/1 & 7/2):
[0388] In a sixth mode of sealing realization, the piston
comprising a housing groove (42) of a segment or couple of ring
seals, is characterized in that it is composed of a central sleeve
(44) in two parts whose front face of one (44 bis) comprises the
cartridge basin, a star shape expansible disc (7/2, 46) sitting on
a stage (45 quart) of the central sleeve, an ejector/electric
igniter (27) and an extractor (22) articulated at the sleeve level
and equipped with a foot cooperating with the head valve of the
ejector/igniter.
[0389] The segment or couple of ring seals (41, 41 bis, ter, quart
& quint, sept) is characterized in that its external diameter
is at rest such as it remains r inside its receiving groove and
does not exceed the bore or diameter of the piston. The expansible
disc (46) is conical and its action, once engaged on a stage of
adapted diameter, is such that an effort tending to its flatness
involves a perfect radial increase in its diameter. The expert will
be able to adapt the number of discs as well as the configuration
of the segments.
[0390] The central sleeve comprises a first stage (45 quarter) seat
for expansible disc(s) and a second conical stage (45)
simultaneously ensuring the internal gas sealing and the abutment
role to the aforesaid sleeve course. The length of the chuck can be
adapted so that the recession of the piston head (44 bis) occurs at
the end of the forward movement of the cylinder head, said head
butting against the bottom of its housing under the action of the
return spring (110). The sealing ring is then systematically
dilated when the cylinder head is closed. The adoption of a shorter
chuck, removing any abutment of the head against the bottom of its
housing, leads to a gas pressure operating mode.
[0391] The electric igniter (27) ensures a quadruple function:
sealing, cartridge ignition, ejector and recoil spring for the
extractor. For this purpose, said extractor (22) comprises a foot
abutting against the conical part in valve shape of the
igniter/ejector (27) so that the return spring of said igniter also
provides the function of extractor recall.
Operating Principle
[0392] At the time of the firing of the ammunition the propellant
gases exert a pressure equivalent on the back of the ammunition and
the head of the sleeve which recesses inside the chuck by
compressing the expansible disc (46) which increases its diameter
and then exerts a radial pressure onto the segment (41).
[0393] This latter is plated against the cylinder wall (62) of the
piston chamber thus ensuring the perfect gas sealing.
Simultaneously the piston moves backwards (except presence of an
opening delay system by solidarisation of cylinder head/barrel),
the head of the sleeve remaining recessed until the pressure of
gases cancels (opening of the chamber). As per this fall of pr ,
the head of piston comes back to its initial place under the
combined effect of the return spring (44 ter) and expansible
disc.
[0394] The segment then retracts in its housing towards its rest
position in order not to exceed the bore of the piston and not to
compromise the next introduction of said piston into its receiving
chamber (62).
[0395] In order to avoid any tightening and blockage risk of the
segment against the chamber wall under the effect of a too fast and
important compression of the expansible disc, the return spring (44
ter) may advantageously be coupled with (or replaced by) a stacking
of discs the "Belleville" type whose progressive crashing will
trigger that of the expansible disc.
[0396] In the same spirit, the disc could be designed in a material
or in such way that its effort is limited by a buckling of the
constituting radial elements in order to ensure a constant maximum
pressure value of the segment against the chamber wall. The expert
will be careful about the adjustment of the chamber (62) bore with
the optimal expansion dimension of the segment (41) for the best
sealing.
[0397] In order to guarantee a great longevity to the segments,
those will be made out of an elastic material (UE9P, steel, cast
iron bronzes . . . ) able to resist the temperature efforts.
Frictions of the segment on the cylinder wall may be reduced by the
adoption of a slightly convex outside (some 1/100 of millimetre)
and the application of suitable self-lubricating treatment
(titanium nitride, Diamond Like Carbon, amorphous carbon,
molybdenum, graphite . . . ).
[0398] This device, in the case of a blow-back cylinder head,
constitutes a true regulating delay system of the chamber opening
by gas pressure.
[0399] The advantage of this formula is to allow the weapon "to
digest" a large variety of ammunition with different masses,
without requiring modification of the barrel or mass of the
cylinder head, and by taking care however to check that the length
of back course of the piston be sufficient for the type of
ammunition considered.
Seventh Mode (Drawing 9/28, FIG. 7/6)
[0400] In a seventh mode of mastering the sealing, the breech (17)
piston comprises a housing groove (42) receiving an annular and
expansible segment (41 six), a central sleeve (44) whose front face
comprises the cartridge basin, an electric ejector/igniter (27) and
an ammunition extractor (22) articulated at the sleeve level and
equipped with a foot cooperating with the head valve of said
ejector/igniter.
[0401] The sealing ring (41 six) is a closed ring out of metal with
known elasticity, its section being trapezoid/isosceles triangle
shaped with a summit turned towards the interior and characterized
in that its external diameter be at rest such as to remain
retracted inside its housing groove and not to exceed the bore or
diameter of the piston.
[0402] The isosceles sides of the segment are resting against
symmetrically arranged faces on the head (44 bis) of sleeve and
chuck (17) at the level of the housing groove (42) of the segment
in order to produce an expansion of the segment when a compressive
force is applied to the aforementioned head of piston. The central
sleeve (44) comprises a conical stage (45) and a shoulder at half
the height of the housing groove (42) of the segment (41 six)
ensuring the role of course abutment of the aforesaid sleeve in
order to prevent any crushing or wedging of the ring (41 six)
against its support. The electric igniter (27) ensures a quadruple
function: sealing, cartridge igniter, ejector and extractor return
spring.
[0403] For this purpose, this latter (22) comprises a foot pressing
against the valve shaped conical part of the igniter/ejector (27)
so that the return spring of the aforesaid lighter also provides
the function of extractor return spring.
Operating Principle
[0404] When firing the ammunition the propellant gases exert an
equivalent pressure at the back of the ammunition and on the head
of the piston which causes the expansion of the segment (41 six),
absorbing part of the weapon recoil, via the pressure exerted by
the couple chuck/head of piston on the internal isosceles faces of
the aforesaid segment.
[0405] Said segment is then plated against the wall of the piston
receiving chamber (62), thus ensuring a perfect sealing effect
against peripheral gases from the piston head trapped between
contact surfaces of the segment with the sleeve (44) and the
chamber (62).
[0406] At the same time the piston moves back (except presence of
an opening delay system for the solidarisation cylinder
head/barrel), the head of the sleeve remaining recessed until the
pressure of gases ends. Immediately after this pressure fall, the
head of piston recovers its initial place under the combined effect
of the return spring (44 ter) and the segment resiliency.
[0407] Said segments then retracts in its housing towards its rest
position in order not to exceed the bore of the piston and not to
compromise the next introduction of said piston into its chamber
(62).
[0408] In order to avoid, in the particular case of a blow-back
option, any tightening risk of the segment against the chamber wall
under the effect of its expansion force, the return spring (44 ter)
may advantageously be coupled with (or replaced by) a stacking of
conical type "Belleville" discs whose progressive crushing will
master the expansion of the segment. The expert will take care of
the adjustment of the chamber (62) bore with the dimension of
optimal expansion of the segment (41 six) for the best sealing.
[0409] In order to guarantee a great longevity to the segment, its
manufacturing out of an elastic material (steel, cast iron . . . )
able to resist the efforts of temperature will be considered A
self-lubricating heat treatment (titanium nitride, Diamond Like
Carbon, amorphous carbon, graphite . . . ) may also be applied, in
particular to the isosceles faces of the segment in contact with
the sleeve and chuck.
[0410] This device, in the case of use of an unlocked cylinder
head, constitutes a true regulating system for the delay in the
chamber opening by gas pressure.
[0411] The advantage of this formula and to allow the weapon "to
digest" a large variety of ammunitions with different masses,
without requiring modification of the barrel or mass of the
cylinder head, and by taking care however to check that the length
of back course of the piston be sufficient for the type of
ammunition considered.
[0412] Note: any combination of modes 1 to 7 previously exposed
would naturally enter the field of the invention as any formula
aiming at producing the uniform expansion of joints segments for
sealing purposes.
[0413] The above mentioned modes have also the advantage of being
able to be adapted to any weapon using a linear locking for the
cylinder head-gun.
Description and Role of the Chuck of Cylinder Head with Gas Port
(Drawings 2 & 3/28)
[0414] The chuck of cylinder head is a cylindrical part,
cooperating with the cylinder head in which it is housed in order
to provide the functions of introduction, igniting and extraction
of the ammunition. For machining and assembly/disassembling
facility reasons the chuck is provided into two principal elements:
[0415] a body comprising (3): [0416] a sealing piston (18) equipped
with a basin to accommodate the back of the ammunition, [0417] an
igniter/ejector (27) unit along the central axis and emerging in
the piston basin, [0418] an articulated extractor (21) equipped
with a hook emerging in the front face of the piston, [0419] a push
rod of extractor (23), [0420] a spring (24) for extractor push rod,
[0421] a damper (25) plug for igniter/ejector, [0422] an electrical
insulator (28), [0423] an extension (30) of igniter/ejector, [0424]
housings (56) for spigots (54, 55), [0425] gas tubes (40) through
the chuck body having a radial direction and emerging in the gas
circulation groove (42 bis) concentric to the housing of the ring
seal and/or spigots (6 bis) and communicating with channels (39)
parallel to the central axis and emerging in the sole cartridge
basin, [0426] a skirt (4 & 5) surrounding the chuck body and
including: [0427] a housing (42) for a ring seal (41), [0428]
channels or openings (40) according to a radial direction crossing
the piston skirt and emerging in the concentric gas circulation
groove (42 bis) to the housing (42) of the segment, located in
front of the channels (40) arranged in the body, [0429] as
required: openings (56) ensuring the role of abutment for spigots
(54, 55), [0430] as required: spigots (54, 55) for barrel/cylinder
head solidarisation during the bullit travel in the barrel.
[0431] The chuck housing in the breech is such as the piston (18)
be projecting in order to penetrate, during closing cylinder
head/barrel, in its housing of the barrel a depth such as, at the
time of the firing of the ammunition, the recess of the piston
authorise the chamber opening only once the bullit has left the
barrel. In order to guarantee a maximum sealing effect to the
chamber during the shooting, the igniter/ejector and the extractor
emerge into the sole front face of the piston.
Realization Modes for the Igniter/Ejector
[0432] The functions of igniting and ejecting a cartridge (either
for faulty cartridge or normal extraction) are carried out by a
single part: the igniter/ejector (27) which crosses the chuck along
its central axis and emerges into the middle of the cartridge
basin.
[0433] This part presents a valve shape at its head and comprises
at its other end a clips engagement groove intended to solidarize a
fixing extension (30) onto which abuts a damper (25) plug
maintaining the igniter/ejector retracted with its closed valve in
the basin. This valve also acts as a contact plug ensuring the
electric firing of the cartridge. It stays in permanent contact
with the electric source of energy via a connection of the spring
plunger type.
[0434] Without changing the scope of this invention, the
igniter/ejector valve (drawing 6/26, FIG. 7) recall into closed
position may also be ensured, instead of the action of the damper
(25) plug on the extension (30), by a spring (29) surrounding the
igniter and exerting its pressure simultaneously on the bottom of
its housing and said extension (30).
[0435] The igniter/ejector (27) is covered with a layer (28) of
insulator (ceramic by plasma gun . . . ), rectified by machining
after deposit, in order to respect the polarity of the igniting
voltage and to prevent any risk of short-circuit.
[0436] The nature of the invention would not be changed if the
insulator (28) were located in the housing channel of the
igniter/ejector. The igniting voltage is exerted between the basin
and the head-valve of the igniter/ejector.
[0437] Ejection Function of the Igniter/Ejector (Drawings 2 to 9/28
& 21/28)
[0438] During the backwards travel of the breech, the
igniter/ejector extension (30) comes to strike an abutment (77) via
a bar (30) causing the opening of the valve involving the ejection
of a cartridge which would have been grabbed by the extractor
(21).
Temperature Resistance of the Head Chuck/Ammunition Chamber
Unit
[0439] In order to ensure an optimal resistance against the
propellant gases temperature for the ammunition chamber, cartridge
basin and extractor, a ceramic treatment by plasma gun projection
or equivalent may be applied. This provision also aims at
preventing the "cook-off" or auto-ignition phenomenon of the
ammunitions during their introduction into the chamber. The
integration of a ceramic insert (alumina, Zircon . . . whose
profile matches that of the chamber will lead to an interior
entirely out of ceramics and will advantageously delay this
phenomenon. The head of chuck, the basin and the extractor could
also be subject to a realization out of ceramics.
Realization of the Chuck Body (Drawings 2 to 10/28)
[0440] The chuck body is machined in order to accommodate all the
elements it contains without requiring any screw assembly. This
principle of construction will master the whole conception of the
weapon.
[0441] Thus, the housing machining in the chuck body of the push
extractor rod unit (23), spring (24) and abutment (25) of the
extension unit (30) for igniter/ejector presents a semi-cylindrical
opening (FIG. 4, N.degree.50) over a length making it possible to
successively insert each element by placing with care in the
following order the extractor, the push rod, the pre-stressed
spring and the abutment. Then engage the chuck body into its skirt
which will solidarize the unit.
[0442] The assembly of the igniter/ejector is carried out by its
introduction by the basin, with a prior care to grind the valve
shaped head in its cartridge basin seat. Once every part has been
set up, introduce the extension (30) of the hammer on the stem (27)
then solidarize the two parts (27) and (30) using a clips then
engage the latter on the abutment (25) if necessary.
[0443] In order to guarantee the sealing at the abutment (25) level
of the igniter, this one adopts a conical valve profile (FIG. 6/4,
49) and is maintained closed under the action of the spring (24) of
the igniter/ejector extension (30) with which it shares the
thrust.
[0444] The two parts chuck skirt (FIG. 5, N.degree.20 & 20 bis)
adopts a perfectly machined (thin tolerances) cylindro-conical
shape in order to accommodate the chuck body and presents at its
base a conical narrowing/contracting (51) intended to cooperate
with the bottom, symmetrically conical, of the slide housing. The
purpose of this provision is to produce a standard "valve" sealing
guaranteeing the absence of hot gases which would reach the back of
the slide.
[0445] This skirt is in two parts in order to allow the assembly of
the ring seal by plunging from the bottom of the chuck without
being likely to make it exceed its elastic limit. The expert will
be able to carry out the parts 50 and 20 bis in only one block if
necessary.
[0446] Note: the back of the weapon breech is dead-ended. No
opening is present and no risk of hot gas leakage is thus to
fear.
[0447] The body/skirt connection of the chuck and the chuck/slide
one are ensured by any adapted means (pins . . . ). One of these
means allowing a fast disassembling may rely on the principle of
the break through of the head of a spring plunger, placed in a hole
of the chuck, emerging in a specific opening of the slide.
[0448] It is enough then, to disunite the chuck of the slide, to
press on the head of the plunger and keep it so inserted until the
chuck may freely slide out.
Gas Operated Chamber Opening Delay Device (Drawing 10/28, FIGS. 7/7
& 7/8)
[0449] A locking of the barrel/slide unit may, on a weapon
according to the invention, being introduced in order to obtain an
additional delay of the chamber opening. This provision is
interesting for weapons whose power of the ammunition would be
likely to involve a too fast chamber opening and a propitiatory
piston length.
[0450] The principle of gas tapping at the level of the cartridge
basin, as previously described, can be made profitable here to
create an additional opening delay to that produced by the recoil
of the piston.
[0451] For this purpose, in a first mode of realization, the chuck
piston comprises housings for spigots (FIG. 7/8) radially laid out,
communicating with channels emerging in the cartridge basin, which
ensure the displacement of the spigots (54) that they contain
according to a radial skirt outwards direction, said skirt
comprising a conical opening housing limiting the course of each
tenon and operating a tight valve type connection.
[0452] The piston chamber is characterized in that it comprises
female housings (56 bis) of piston spigots heads. These spigots, in
a variable number, adopt, preferentially but not imitatively, the
shape of sphere (54) or present a flattened base (55) toped by a
cone finished by a half-sphere.
[0453] When firing the ammunition, the pressure of propellant gases
acts on the basis of tenon(s) who immediately penetrate into their
respective chamber housings (56 bis), thus blocking the
barrel/slide connection.
[0454] The fall of pressure registered at the ammunition exit of
the barrel causes the pressure cancel at the spigots basis who
release the barrel/slide connection for opening the chamber
then.
[0455] The spigots are free mounted in their housing, their return
in unobtrusive position being naturally carried out under the
effect of the barrel/slide dissociation.
[0456] In a second mode of realization (FIG. 7/7) the housings (56)
of spigots are radially laid out in the wall of the barrel at the
ammunition chamber level in which they emerge directly.
[0457] The pressure of propellant gases ensures the displacement of
the contained spigots according to an outward radial direction in
order to cooperate with a matching female housing (56 ter) machined
in the slide to ensure a rigid barrel/cylinder head connection at
the beginning of the shot.
[0458] The pressure fill at the exit of the bullit from the barrel
causes the pressure cancel on the basis of spigots who release the
barrel/slide connection for the chamber opening.
[0459] The slide is characterized in that it comprises female
housings (56 ter) matching with the spigots present on the barrel.
These spigots, in a variable number, adopt, preferentially but not
limitatively, the shape of sphere (54) or present a flattened base
(55) topped by a cone terminated by a half-sphere.
[0460] Note: the nature of the invention would not be changed if
the spigots, according to any of the previously evoked assemblies,
were articulated in any desired way (off-set axis . . . ) or
equipped with a return device (spring . . . ).
[0461] This temporary solidarisation device for barrel/slide is
particularly advantageous in that it ensures an automatic
regulation of the opening delay which is directly proportional to
the variation of pressure in the chamber, thus at the precise exit
moment of the bullit.
[0462] This system presents, correlatively, the enormous advantage
of an automatic adaptation of the weapon to cartridges of various
powers or masses without implying, for a single gauge,
modifications of parts.
Short Barrel Recoil Mechanism (Drawing 11/28, FIGS. 8 & 9)
[0463] A mechanism authorizing a short recoil of the barrel,
founded on a principle of sliding motion of said barrel in a
bedding (107), can easily be obtained, without increasing neither
the complexity nor the volume of the weapon.
[0464] The barrel (60) is mounted sliding, with a few millimetres
course, in its bedding (107) integral with the frame and is
maintained in position under the action of a spring shock absorber
(110).
[0465] This bedding is composed of a hollow roll, with an internal
diameter such as to accommodate the barrel, and comprises several
guide slots (108) cooperating with matching rails (109) of the
barrel.
[0466] Two of these rails are horizontally placed alongside the
barrel and indexed at 180.degree. one to the other, a third one, if
needed, is positioned vertically along the axis and at the bottom
of the barrel. The two horizontal rails (109) are advantageously in
alignment and of the same format (height and width) with spigots
(112) interdependent of the barrel and placed frontward.
[0467] The barrel is introduced, mouth first, until the shoulder of
the piston chamber butts against the front face of the bedding. The
spring shock absorber (110) is then introduced, barrel mouth side
fist, until butting against the other face of the bedding, then
slightly compressed so as to support the assembly of a ring
(111).
[0468] This ring (FIG. 9) cooperates with the spigots (112)
integral with the barrel so as to carry out a bayonet type
assembly. The ring (110) is then maintained in place by the action
of the shock absorber spring (110) which authorizes,
simultaneously, a short recoil of the barrel.
[0469] This ring ensures the role of course abutment of the barrel
and can advantageously be related to the recuperator spring (57)
for which it constitutes an ideal seat, facilitating the operations
of assembly/disassembling of the weapon.
[0470] Note: this system favors a fast change of the barrel and
thus the caliber of the weapon by simple adaptation of the cylinder
head and magazine.
Barrel Short Recoil Operation
[0471] When firing the ammunition, the gas pressure propels the
spigots (55) in their receiving housing (56 bis or 56 ter) of the
barrel involving the barrel/slide solidarisation.
[0472] The unit moves then back, compressing the only spring shock
absorber (110) until the ring (111) butts against the bedding. As
per the brutal pressure fall consecutive to the exit of the bullit,
the spigots release the slide which sole continues its backwards
movement compressing in its turn the recuperator spring (110
bis).
Introduction of the Cartridge
[0473] As per all automatic weapons, the ammunition loading system
according to the invention is carried out by a magazine (95) whose
lips present a cartridge at the entry of the barrel chamber. The
piston of the cylinder head ensures this introduction during
forward movement of the slide while pushing on the back face of the
ammunition to introduce it into the sealing chamber of the piston
which acts as a funnel, appreciably improving the quality of
cartridges introduction, thus guaranteeing a higher reliability
than that of the weapons carrying cased ammunitions.
[0474] During this introduction phase, the extractor (21) claw
engages the groove at the base of the ammunition to maintain it
positioned at the bottom of the basin. The cartridge (1) is then
pushed into the chamber until closure of the cylinder head.
[0475] Little time before the ammunition course end in the chamber,
the extractor claw (21) has engaged, if necessary, the raising
slope (59) arranged for said extractor in the barrel. The
ammunition is then immobilized in the barrel chamber and its back
face is completely resting against the basin of the piston under
the pressure of the recuperator spring (57) ensuring the slide
closure.
[0476] The raising of the extractor is justified only in the case
of use of ammunition (pl. 1/28, FIG. 1/2) whose cap is prolonged at
the back in order to protect the propellant. In the case of small
calibre ammunition whose extracting groove is an integral part of
the solidified propellant, the igniting of the cartridge may occur
with an engaged extractor, the propellant being instantaneously
turned into gas. A heat treatment of the extractor (nitride
titanium), even its covering by projected ceramics will ensure its
protection.
Description and Operation of The Extractor Raising System (Drawing
2/28, FIG. 3)
[0477] The extractor (21) ensures the withdrawal of a cartridge
from the chamber. Its resistance enables him to support the most
violent efforts, in particular in the event of emergency extraction
of ammunition for ignition failure. Remember that the design of a
caseless weapon without extractor would expose the user in the
event of failing ammunition.
[0478] The extractor adopts a rectilinear shape (21) made up of a
principal arm terminated by an elbow appreciably with right angle
at an end. The other end presents the shape of a hook intended to
engage the groove of the ammunition. The rectilinear extractor (21)
is interdependent of the chuck of cylinder head via a connection
using a free locking assembly (3) under the action of a return push
rod (23).
[0479] This return push rod role is to maintain the extractor in
closed or lowered position and, to this end, exerts a couple onto
the principal arm.
[0480] In order to ensure during the shooting, if needed, the
disengagement of the extractor claw from the ammunition groove, the
weapon according to the invention is equipped with an automatic
means for raising said extractor before firing.
[0481] For this purpose, the hook of the extractor ends in an arrow
or bevel cooperating with a female housing (59) symmetrically
arranged in a bevel, ensuring the role of raising slope (59),
placed in the barrel chamber (62). This provision ensures the
automatic lifting of the extractor and its disengagement of the
ammunition groove as per the closing of the chamber.
[0482] The length of the main arm of the extractor is adapted in
order to ensure the engagement of the raising slope before the head
of cartridge butt against the entry of barrel profile. Thus, the
raising of the extractor hook is initiated whereas the ammunition
is not completely introduced.
[0483] During of a backwards movement, the descent of the hook is
simultaneously initiated with the retreat of the slide whereas the
present cartridge is still motionless, to be then immediately
engaged by the hook for extraction.
[0484] The purpose of these raising mechanisms of is to release the
cartridge before shooting and to ensure, by simple manual recoil of
the slide, the lowering of the extractor and the withdrawal of a
cartridge which would accuse some ignition defect for example, to
carry out its immediate ejection out of the chamber.
[0485] The operation is absolutely identical to that which would
imply a traditional weapon, not involving any familiarisation
effort or reflex change.
Trigger Operation (Drawings 12 to 14/28).
[0486] The trigger actuates, gradually and sequentially via a
helicoidal spring machined in the mass guaranteeing an indexing
with the perfect neutral, contactors on one or more levels so as to
provide the following functions: [0487] master power, [0488]
semi-automatic fire, [0489] automatic fire.
[0490] In the case of use of only one unipolar contactor on two
levels, the first corresponds to the single fire and the second to
full auto. In the case of use of two contactors, each one
corresponds to a firing mode.
[0491] The gunner can thus at will select one or the other of the
shooting modes on a simple differential depression of the
trigger.
Safety Measures
The Trigger Safety (Drawings 11, 12 & 13/28)
[0492] At the trigger guard level, the weapon integrates a trigger
safety or "counter-trigger" (68) characterized in that it be
combined with the trigger guard bolt which is composed of a part
comprising two arms of which one marries the shape of the trigger
guard and constitutes the counter-trigger lever and the other the
bolt of trigger guard whose head provides in addition the function
of trigger bolt. For this purpose, the arm of the trigger
comprises, close to the axis of rotation, a female housing (65) to
receive the head or warp end of the bolt (66) of trigger guard.
[0493] When disengaged of its trigger housing, the bolt head is
resting, under the action of the bolt return spring, on the
circular trigger cam (67 bis), thus maintaining the counter-rigger
drowned in its housing (69) of the mount of trigger guard. To do
so, the cam adopts a circular shape on a portion of angle
corresponding to the backwards clearance (shooting) of the
trigger.
[0494] This cam also comprises a setback (67 ter) on a small
angular sector in order to cause, when a pressure is exerted at the
back of the trigger, an embossing effect via a short recess of the
warp end right before engaging its trigger housing.
[0495] The trigger is maintained in "neutral" position under the
action of two springs (65) and (65 bis), with equal strength and
assembled in contra-rotating direction one to the other in order to
guarantee an angular displacement on both sides of a constant
neutral position. A sole cylindrical spring machined in the mass
would provide the same function without changing the nature of the
invention.
[0496] A pressure of the finger on the back face of the trigger
will cause the locking of said trigger by engagement of the bolt
head (66 bis) of the trigger guard in the matching trigger housing
(67) and the simultaneous appearance, in the trigger guard, of the
counter-trigger arm (68).
[0497] A forwards pressure from the index on the counter-trigger
arm will cause the disengagement of the warp end of the trigger
guard bolt out of its housing, releasing the trigger towards its
neutral position under the action of its return springs. The weapon
is then immediately ready to fire. [0498] This safety offers four
advantages: [0499] its operating principle mobilizes the sole
trigger finger which, since it acts on the counter-trigger, cannot
simultaneously exert parasitic action on the trigger itself and
cause an inopportune departure as it happens on weapons equipped
with safety levers easy to handle by another finger. [0500] its
implementation is completely ambidextrous and is quickly carried
out with only one hand, guaranteeing a user wounded at a hand to
emerge from a perilous situation. [0501] its principle avoids any
miscoordination, in particular in the event of stress, since it
requires only one and single finger to actuate the safety and fire.
[0502] its safety formula of the only one to remain permanently
engaged and to be released a split second before a shooting reflex.
[0503] Accidental departures are thus impossible.
[0504] Note: the trigger guard bolt authorizes the swing of said
trigger guard around a common axis with the magazine stopper. The
trigger guard comprises an abutment (78) limiting the backwards
course of the slide. The cancelling, during the swing of the
trigger guard, of this abutment allows the complete retreat of the
slide which can then be disengaged from its guide rails of the
frame to carry out the disassembling of the weapon. When opening
the trigger guard, the bolt is operated by traction towards the
barrel mouth, the counter-trigger arm moves then until the bottom
of its housing (69), machined to this end, in the mount of trigger
guard.
Chambered Cartridge Indicator
[0505] The weapon is equipped with a cartridge presence indicator
in the barrel chamber. This provision is particularly important
whereas rare are the models equipped with this essential safety
device.
[0506] For this purpose, the weapon uses the measurement of a very
weak tension between the two igniting poles constituted by the
contact pin and the cartridge basin, testifying the presence of a
conductor such as the cover of the ammunition. This current can be
made profitable to generate a signal to the screen located at the
back of the weapon slide or the lighting of a diode, with
adjustable light intensity.
Data Transfer Between Frame and Breech (Drawing 27/28).
[0507] The reciprocating motion of the breech/cylinder head to the
frame involves the need for transferring information and electric
power between the central processing unit and the trigger.
[0508] For this purpose, the recuperator spring (57) is
characterized in that it is doubled by one or more conducting wire
contained in a sheath (thermocontracting type) surrounding said
spring wire and indexed at its two ends, namely the barrel bedding
and the cylinder head, in order to ensure a tight multipolar
connection between the information wire routing from the trigger
(FIG. 29, N.degree.125 quart) and from the central unit of the
cylinder head (29, N.degree.125 ter). The steel wire composing the
spring ensuring an electric polarity between the cylinder head and
trigger block
Large Capacity Tandem Magazine (Drawings 15 to 20/28)
[0509] The advantages, out of common appreciation in term of volume
reduction (50%) allowed by the caseless ammunitions, can be made
profitable to appreciably increase the number of cartridges one can
reasonably place in a magazine. A length of about 20 m/m overall is
from now on possible for a 9 mm ammunition instead of the normal
29,5 m/m, for example.
[0510] This length reduction makes it possible to naturally
position two tandem raws of ammunitions in the volume of a
traditional magazine without appreciably increasing its overall
dimensions. The positioning of two cartridges in tandem according
to the invention would occupy a volume of only about 45 to 50 m/m,
an easily integrable length in a handle gun.
[0511] The model of magazine (14 to 18) according to the invention
is thus founded on the principle of two tandem (97 & 98)
compartments containing each one a stacking of cartridges laid out
in one, two or in three piles. These compartments cooperate via
common lips (96) intended to forward the ammunition to the barrel
feeding ramp and are sequentially initiated by a coupling
device.
[0512] Each compartment conveyer comprises one or two buttons
(101), as required, sliding in a corresponding vertical groove
arranged on the side faces of the magazine. A finger (thumb) action
on a button ensures the manual descent of the conveyer for
cartridges feeding.
[0513] The button of the front compartment conveyer cooperates,
when reaching its course end, i.e. when the last cartridge leaves
the lips of the magazine, with the coupling device of the
compartments for a continuous feeding of the weapon.
Compartments Coupling Device (Drawings 17 to 20/28, FIG. 19 to
22)
[0514] The coupling compartments device ensures, during the rise of
the cursor or button (101) of the front compartment, the swivelling
of a cartridge stopper (103) which releases the cartridge of the
aft compartment. The head cartridge of this compartment comes then
immediately, guided by the lips of the charger, to butt against the
cylinder head, ready for introduction into the chamber.
[0515] The main arm of the cartridges stopper (103) comprises at
its end a horizontal abutment (103 bis) intended to prevent, when
the magazine is engaged in the weapon, the cartridges of the aft
compartment to reach the lips level to be pulled by friction at
each passage of the cylinder head, is articulated on the back wall
of the magazine well via an axis crossing the frame: [0516] either
in a perpendicular way to the barrel axis in order to ensure a
backwards swivelling of the stopper which then comprises an
locking-arm (103 ter) equipped at its end with a pin (102 bis) to
co-operate with a locking hook (102). The stopper returns into
front or projecting position (20) under the action of a spring
(104) located in the recess housing of its angular displacement.
[0517] It is maintained locked in this position by the action of
the hook (102) immobilizing the locking-arm. The aft swing of the
cartridges stopper is ordered by the opening of said hook (drawings
17 to 20/28, FIG. 19 to 22, N.degree.102). [0518] This hook, linked
to the frame wall via a rotation axis, cooperates with the pin (102
bis) located at the end of the locking-arm and comprises, in
addition, a cam (102 ter) cooperating with the button of the front
conveyer. [0519] When the last cartridge of this compartment leaves
the lips of the magazine, the conveyer lift up causes the button to
exert a pressure onto the cam involving the swivelling of the hook.
The button continues to exert its pressure on the locking-arm
involving its backwards swing. The cartridges of the aft
compartment are then released. When the magazine is disengaged, the
spring return force (104) of the stopper is enough to ensure the
re-engagement of the locking-arm pin by the head of the hook
involving, in turn, the re-locking of said stopper. [0520] either
in a parallel way to the barrel axis in order to ensure a lateral
swivelling of the stopper-arm (103) and its horizontal abutment
(103 bis) initiated by the rise of the front conveyer button (101)
who, as soon as the last cartridge leaves the compartment, causes
the swing of a transmitting rod housed in the internal side wall of
the magazine well and mounted swivelling on its median axis to
cooperate with an arm integral to that (103) of the cartridge
stopper to involve its lateral swing. The stopper and the
transmitting rod comprise each a return spring ensuring their
return into position as per any magazine disengagement. The
presence of a stopper hook (102) cooperating with the transmitting
rod is not essential since the force exerted by the cartridge on
the horizontal abutment (103 bis) passes by the central axis of the
stopper and generates no couple justifying a mechanical blocking
device excepted, possibly, the prevention of an inertial shock.
Triple Cartridges Stacking Capability for Magazine Compartments
(FIGS. 15, 17 & 18)
[0521] In order to appreciably increase the fire power of the
weapon, a three columns stacking of the cartridges can easily be
obtained with appropriate dimensioning and geometry of the
cartridge wells of each compartment.
[0522] Indeed, the cartridges lift up, under the action of the
conveyers driven by their respective springs, without wedging to
ensure the presentation of a single one at the magazine lips,
requires that the wells adopt a rectilinear profile from the base
up to a certain height and terminate in a narrowing at their top.
This narrowing is characterized in that it is dissymmetrical in
order to modify gradually, as per the progressively rise of the
cartridges in the well, their stacking from three to two, then to
become a single column pile with the resulting pressure exerted on
any cartridge by all others be not normal to its compartment side
wall. This dissymmetry is obtained by adoption of a particular and
different slope angle for each sidewall (95 bis & 95 ter)
making the narrowing part of the magazine.
[0523] The slope dissymmetry of the magazine sidewalls can be
easily obtained in a plastic material (or suitable resin)
realization of the magazine that would let no external dissymmetry
appear or by an adequate embossing (18 & 19) of the side wall
of each compartment in the case of a metal manufacturing.
[0524] This disposition makes it possible to easily feed each
compartment with twenty cartridges, carrying up to more than forty
rounds the fire power of the weapon. A lengthened magazine would
easily allow boosting the number of cartridges up to twenty five or
thirty per compartment.
Counter-Recoil Cartridges Abutment
[0525] During the aft movement of the cylinder head, the
counter-recoil function for the ammunitions of the front
compartment is automatically carried out by the central wall
between two compartments.
[0526] As a matter of fact when the magazine is engaged, the head
cartridge is a few millimetres recessed down by the cylinder head.
Its plane back side then butts against the central wall if the
friction caused by the back movement of the cylinder head tends to
make it move backwards.
[0527] This function is similarly provided by the cartridge stopper
and the height of the back wall of the well for the ammunitions of
the aft compartment.
[0528] Note: When the front compartment is empty, the upper
position of the conveyer, determined by an abutment integral to the
magazine wall, may slightly exceed the top of the central wall in
order to keep the last cartridge pressed against the lips of the
charger, constituting then a perfect feed ramp for the back
compartment cartridges.
[0529] Those are then guided in the tunnel constituted by the lips
of the charger and the conveyer, which they slightly press down
during their transit, for an immediate introduction into the
chamber under the push of the piston of cylinder head.
Capacity Limitation Device of the Back Compartment (Drawings 15
& 16/28, FIG. 14 to 17)
[0530] The model of magazine according to the invention implies
that, once engaged in the weapon, the sole front compartment
cartridge is in upper position.
[0531] If the design of the magazine would not authorize, aft
compartment full and front one furnished with at least a cartridge,
the descent a sufficient height of the back pile of ammunition by
the cartridge stopper upon said magazine engagement, a capacity
limitation device of this compartment may be set up.
[0532] This device advantageously exempts the users from counting a
maximum number of cartridges to be supplied in the back compartment
to allow the descent of the pile of ammunitions under the stopper
action.
[0533] For this purpose, it is composed of a bolt, automatically
erasable during the introduction of the magazine into the weapon
well limiting the capacity of the compartment to the maximum number
of cartridges minus one. This bolt prevents the conveyer of the
compartment from completely going down and authorizes the full
course only once erased.
[0534] To do so, the central wall (98 bis) separating the front and
aft compartments integrates, in its plan, a housing for a short bar
(106), sliding laterally in said housing in order to let exceed a
bevelled (or round) strip out of the side wall of the magazine.
[0535] The central wall also comprises a longitudinal rail or slit
(98 ter) in its center intended for the sliding motion of a pin
(100 bis) located on the front face of the back compartment
conveyer. The strip of the bar is maintained protruding under the
action of a spring (106 bis) and cooperates with the internal wall
of the well which ensures its recession during the engagement of
the magazine. The bar adopts preferentially but not imitatively a
trapezoidal section in order to slide in the symmetrical section of
the central wall housing.
[0536] The bar comprises a receiving slit (106 ter) for the pin
(100 his) of the back compartment conveyer. The slit is positioned
in such a way that it can only be engaged by the pin when the
supporting bar is lowered, i.e. when the magazine is engaged in the
well. This device prohibits the feeding of the magazine beyond of a
certain number of cartridges for, recession of the protruding part
of the abutment during the complete introduction of the magazine
obliges, authorize a further descent of the conveyer.
[0537] This action favors the cartridge stopper's which causes the
descent of the pile of cartridge a length compatible with the
passage of the cylinder head for the exclusive feeding of the
weapon with ammunitions from the front compartment.
[0538] In order to facilitate the realization of a magazine
according to the invention, the central wall may be removable and
positioned by guiding rails on the internal walls. Another mode of
realization may be obtained from buckled then folded and welded
metal plate.
Magazine Feeding and Operations
[0539] The cartridges supply of a magazine according to the
invention may indifferently by initiated with any compartments.
[0540] Shooting training, by short bursts or with a limited number
of cartridges requiring only one compartment, will be
preferentially practiced with a loaded back compartment.
[0541] As a mater of fact, this one is the sole whose conveyer's
button commands the breech arrester (indifferently mounted on the
right or left side of the weapon). The use of the front compartment
would lead to a breech closure on an empty chamber. The
introduction of a breech arrester raised by the front compartment
pin, for the preferred use of this compartment, is naturally
possible but would involve an interruption of the firing sequence
of both compartments.
[0542] The feeding of each compartment will be easier than with the
traditional magazines because of the perfect linear surface of the
ammunitions. Indeed, the traditional ammunitions comprise a lip at
the level of the case/bullit junction which causes a scraping
effect on the preceding case during the introduction of the
cartridges.
[0543] The introduction of ammunition into the back compartment
will, moreover, be facilitated by the presentation, head fir % of
the ammunition.
Breech Arrester (Drawing 21/28, FIG. 23).
[0544] To ensure ambidexterity, the breech arrester or slide
stopper (78 bis) of composed of a lever whose assembly can be
indifferently installed on one side or the other of the weapon, or
be present simultaneously on both sides thanks to a second lever,
at user's preference.
[0545] In the case of a simultaneous assembly of both arresters
those are interdependent one with the other via an axis crossing
the frame. The levers are indifferently upwardly actuated by the
aft transporter button (101) present on both sides of the magazine.
Remember that it is still possible to actuate the arrest with the
front conveyer button after opening of the hook (102) locking the
cartridges stopper (103).
[0546] This provision allows the indifferent use of front and aft
compartments, but involves however a blocking of the cylinder head
in aft position during a continuous firing sequence consuming the
front and aft compartments cartridges. A manual recess of the
cylinder head will allow resuming the fire sequence with the
introduction of the first cartridge of the back compartment.
[0547] A receiving notch for breech ester is arranged on each side
of the slide. However, in the case of simultaneous assembly of both
stoppers, a single one owns a capture tenon: this provision ensues
the systematic release of the slide, under the recuperator spring
action, at the time of a pressure on any of the levers.
Full Auto Mode
[0548] The former description relates to the semi-automatic
operating mode of the weapon, i.e. each round firing must result
from a complete and continuous pressure of user on the trigger.
Under full auto mode, the weapon must be able to fire continuously
as long as the trigger is not released.
[0549] For this purpose, the igniting voltage is delivered to the
firing pin according to a rate/rhythm sequenced by the clock under
central processing unit control. To do so, the weapon can be
connected any time, via its special port, to a computer to program
the central unit memory with the firing parameters, in particular
the rate of fire as well as the rounds limiter allowing for
selective firing from single to two or more rounds per burst, up to
full auto.
Weapon Recoil Compensator (Drawings 10/28 & 12/28, FIGS. 7/8
& 10)
[0550] The counter barrel raise due to weapon recoil during full
auto firing may be obtained by gas tapping at the level of the
ammunition chamber, said gases being evacuated at the barrel end
with an upwards direction.
[0551] The principle of caseless ammunitions favors a gas tapping
directly at the chamber level whereas the presence of cases on
traditional ammunitions makes it quite simply impossible.
[0552] The device is composed of a vertical gas port (90), bored
through the upper wall of the barrel at the entry of the ammunition
chamber, communicating: [0553] either with an assembled
side-mounted tube emerging at the top end (the cylinder head is
arranged consequently and comprises a female housing for this
tube). [0554] either with a channel (FIG. 10, n.degree.92) bored
longitudinally in the slide wall alongside the barrel and emerging
at its end according to an upwards direction. The slide opening
adopts the shape of a groove (91) practiced on its internal face
with a favourable length to support the gas supply during the back
travel of the breech. This provision makes it possible to feed with
propellant gas the ramp thus created in the slide and this from the
ignition till the opening of the cylinder head.
[0555] When firing an ammunition, part of propulsion gases escape
by the opening of the chamber and travel along the slide via the
ramp or the tube to emerge vertically at the end of the weapon.
[0556] These gases produce a vertical push, instantaneous and in
symmetrical progression of the propulsion force of the bullit,
countering the progressive raising of the weapon consecutive to the
recoil produced by the departure of said bullit. A smart
dimensioning of the openings and ramp for gases should ensure a
perfect stability of the weapon during a full auto fire.
[0557] This compensating formula is the only one to guarantee a
perfect synchronization of the counter-raising action with the
bullit departure in order to counter the recoil at best
Key Locker (Drawings 21 & 22/28, FIGS. 23 & 24)
[0558] The weapon comprises, in order to guarantee the use by its
sole owner, a key device (23 & 24) prohibiting shooting,
magazine engagement/disengagement and weapon disassembling. This
device is composed of a reduced size removable locker (114), made
out of strong metal, which comes in a housing (113) located on the
lower face of the frame in front of the trigger guard.
[0559] This locker crosses the frame to emerge under the barrel and
ensure the following quadruple role: [0560] abutment for the
cylinder head course between the locker head and the lower front
edge of said cylinder head in order to prevent any introduction or
extraction of cartridge, [0561] counter-trigger locking, [0562]
command of the magazine well locking rod, [0563] locking of the
weapon disassembly bolt (trigger guard).
[0564] The installation of this locker is only possible when the
trigger safety is engaged, thus involving the appearance of the
counter-trigger and the simultaneous displacement of the
corresponding bolt. This recessing of the bolt releases the opening
of the housing (113) for the locker as well as the warp end (115
bis) located at the end of the locking rod (115) of the magazine
well who emerges in said housing.
[0565] This rod, maintained in position by its return spring,
crosses the weapon frame in such a way that its other end emerges
in the magazine well under the effect of the displacement generated
by the pressure of the locker body on the warp end during its
introduction into the housing. The rod then engages the
corresponding hole arranged in the wall of the front magazine
compartment or, failing this, prohibits any magazine
introduction.
[0566] The installation of this locker, made up of two coaxial
parts whose dissociation can be carried out only with the key in
closed position, ensures the implementation of four safety
measures: [0567] trigger locking resulting from the preliminary and
compulsory installation of the counter-trigger bolt before
introducing the locker into its housing, [0568] cylinder head
locking resulting from the introduction of an abutment (head of
lock) limiting its course and prohibiting any chambering of
cartridge, [0569] magazine well locking resulting from the
displacement of the rod (115) preventing any withdrawal or
introduction, [0570] weapon dismantling by immobilization of the
trigger guard bolt Monobloc Aiming Device (Drawing 23/28)
[0571] The slide of the weapon, according to the invention,
comprises an ejection window for ammunitions on the sole lateral
right side without encroaching on said slide.
[0572] Such a distribution is possible thanks to the use of
caseless ammunitions contrary to traditional ammunition which
impose, on the others weapons, an oversized ejection port
encroaching on the top of the cylinder head.
[0573] This specificity can be made profitable to equip the weapon
with a monobloc aiming (25) device composed of a solid cast rail
(117) with a U section comprising a front sight at an end, integral
with the slide by a pin (122) bored through said slide at the
frontsight (120) and by a part ensuring a connection (119) between
a thumb screw integral with the slide and said rail, the
aforementioned part comprising a vertical axis (123) crossing said
slide to engage a hole arranged on the lower face of said rail,
which hole communicates with the housing of a circlips dish (121)
which, set up, engages the axis (123) groove for locking.
[0574] This aiming set can advantageously be painted, in the inside
of the rail and all over its length, with suitable color so as to
facilitate the reactive shooting. It ends with a frontsight located
in the rail prolongation and is painted with a different color on
its user's profile side, so that this latter benefits from an
immediate appreciation of the elevation to adopt. For this purpose,
the aiming control is facilitated by the simple adjustment of the
handlebar (120) portion to let emerge in the center of the U shaped
rail. This latter is underlined of white painting to facilitate the
visual acquisition.
[0575] The angular adjustment is carried out by a micrometric screw
(118), located at the top and inside the breech, perpendicular to
the symmetry plan of the weapon, which cooperates with the part
(119) integral with the aiming rail. This part (119) is composed of
a body in which the endless screw circulates, surmounted by a
vertical axis which crosses the upper wall of the breech and is
fixed to the aiming rail. In order to take into consideration the
radius of curvature during the swivelling of the rail for an
adjustment, the opening for the axis of the connecting part (119)
presents the same curve centered the same (122) as that of the
aiming rail.
[0576] The thumb screw is cylindrical shaped supporting endless
threading and comprising a receiving slit for a screwdriver head at
its emerging end, the other end, placed in a housing of the slide,
is equipped with hemispherical housings on the circumference of its
plane face to receive the ball head of a spring-pawl (118 bis).
[0577] The spring pawl is housed in the slide body, its axis
parallel to that of the screw, and in such a way that its head
emerges in the receiving hole of the screw and be resting against
its side face in order to proportion the aiming correction.
[0578] The screw (118) is free assembled in its housing and
comprises circlips positioned inside the cylinder head in order to
maintain it in its housing.
[0579] The connecting part (119), driven by the thumb screw,
ensures the angular displacement of the aiming rail.
[0580] The head of the flat circlips (121) may advantageously bear
the underlining of white painting of the rail entry.
[0581] Note: the connection of the vertical axis (123) of the
connecting part (119) with its dead-opening in the rail may,
without changing the nature of the invention, be screw-type or
benefit from the possible elasticity of the material composing the
aforementioned axis to ensure the connection by reversible
clip.
Telescopic Barrel (Drawing 24 & 25/28, FIGS. 26 & 27)
[0582] The weapon according to the invention may incorporate a
telescopic barrel intended to increase the firepower, the precision
and range of the caseless ammunition.
[0583] This device is composed of a telescopic barrel (138) with
automatic extension mounted sliding inside a second barrel (140)
and maintained in a retracted position by a return spring (141).
The internal barrel (138) presents the shape of a hollow roll whose
internal diameter is adapted to the caliber of the ammunition and
comprises two contiguous and coaxial sections (138 bis) and (138
ter) with external diameters ready to cooperate respectively with
the diameters of the interior shoulders (140 bis and 140 ter) of
the external barrel (140) inside which said internal barrel
slides.
[0584] The two barrels are encased one in the other so as to carry
out a sliding telescopic assembly thanks to a contact flange
constituted by the larger diameter cylindrical part or stage (138
his) of the internal barrel (138) in contact with the larger
internal diameter cylindrical part of the external barrel (140 ter)
and the smaller diameter part (138 ter) of the internal barrel in
contact with the inner wall of the small diameter cylindrical part
or stage (140 bis) of the external barrel.
[0585] The fitting of the parts in contact is likely to support a
tight connection with the minimum of frictions. The internal barrel
may be rifled on its interior cylindrical part as per the majority
of guns.
[0586] The connection between the two barrels is likely to
authorize an axial sliding and prohibit any free rotation of a
cylinder compared to the other. For this purpose, the external
surface of the internal barrel is characterized in that it
comprises on its lower diameter (138 ter) part a certain number of
rectilinear or helicoidal grooves cooperating with symmetrically
arranged grooves on the internal face of the cylindrical part of
lower diameter (140 bis) of the external barrel with which it
cooperates.
[0587] The end of larger internal diameter of the external cylinder
(139) comprises an external threading intended to cooperate with a
matching threading arranged in the bedding (107) of the weapon. A
pin locks the barrel-bedding connection.
[0588] A return spring (141) intended to ensure the return into
retracted position of the internal barrel is emprisonned between
internal and external barrels. Surrounding the internal barrel (138
ter), its both ends rest against the radial faces (138 bis and 140
bis) of each stage of the internal and external barrels.
[0589] In order to prevent any deterioration of the return spring
during the compression produced by the extension of the internal
barrel, the external cylinder comprises an inner setback or
shoulder (142) against which the front face of the large diameter
cylindrical part (138 bis) or stage of the internal gun comes to
butt at its course end.
[0590] The assembly of the unit is particularly simple and easy:
engage the recuperator spring around the internal barrel (138) then
introduce the unit into the external barrel (140) which one then
screws in the housing of the bedding 50 (107).
[0591] The back face of the internal barrel emerges in the chamber
of ammunitions and comprises a conical funnel-collector (143)
intended to accommodate the bullit.
[0592] This funnel has an entry diameter close to that of the
internal diameter of the external barrel in order to suppress any
gas pressure which would tend to be exerted alongside the barrel
axis and push the aforementioned telescopic barrel 55 outside and
increase unnecessarily the weapon recoil.
Telescopic Barrel Operating Principle (FIGS. 26 & 27)
[0593] When firing the ammunition the bullit is propelled in the
conical collector (143) of the telescopic gun (138) whose frictions
with said bullit involve a transfer of energy causing its
progressive extension (27).
[0594] The projection of the telescopic barrel appreciably
increases the dimension of the cartridge chamber for a better
propellant combustion as wall as an increase in the duration of
propulsion and guidance of the bullit the power at the barrel mouth
is increased in similar proportions to that produced by a
traditional increase of the barrel length.
[0595] The telescopic barrel extension occurs simultaneously as the
cylinder head recoils, compensating thus the recoil with a forward
projection of mass in due proportion of the telescopic barrel mass
and its exit speed. The telescopic barrel thus generates an
anti-recoil effect favouring the fire stability, particularly in
full auto.
[0596] As soon as the bullit exits the telescopic barrel, this one
returns into retracted position under the effect of the return
spring, ready to accommodate a new bullit.
Advantages of Electronics in the Weapon (Drawings 26, 27 &
28/28)
[0597] The introduction of electric power and microprocessors leads
to a simplification of the mechanisms, therefore a weight
reduction, and to the integration of particularly important new
functions: [0598] detection of a cartridge in the barrel chamber,
[0599] selection between single and full-auto fire from the
trigger, [0600] selection of the number of shots fired during
full-auto burst, [0601] cartridges counter, [0602] number of shots
per accredited user, [0603] total shots counter (barrel wear),
[0604] clock: date and hour of the shootings, [0605] recording: the
central processing unit comprises a memory size making it possible
to restore all the elements of a shooting (user, date & hour, a
number of shots . . . ), [0606] fire safety with automatic
fingerprint recognition of the accredited(s) user(s), [0607]
authorized users registration, [0608] automatic control of the type
(short, long . . . ) of magazine engaged in the weapon, [0609] low
batteries alarm. Fire Selection (Drawing 26/28)
[0610] A fire selector (81) with two positions "S" (for single or
shot by shot) or a pictogram representing a cartridge and an A or
AUTO (for automatic) or a pictogram representing several
cartridges, can be installed on one of the side walls of the handle
in order to guarantee the user the absolute control of burst
shooting.
[0611] This selector may integrate several additional positions
corresponding to the number of shots during a burst. This number of
ammunitions may be indicated by the affixing of a number or as many
stylized cartridges around the selector. The single position will
inhibit the function of any second contactor or the fully depressed
position of any two levels contactor of the electric trigger.
[0612] In the case of burst firing, the trigger being fully
depressed, the registration of breech effective closure by a
standard micro switch contactor (128), optocouplor . . . located,
for example, at the frame/breech junction (28) will be compulsory
before delivering of the required voltage to the igniter/ejector. A
three positions rotactor whose axis would be confounded with the
trigger one would provide the same functions without changing the
nature of the invention. The fire selections are carried out then
by a progressive pressure applied on the trigger, suppressing the
need for a selector (81).
Functions Display
[0613] The weapon comprises a display screen for the following
informations: [0614] cartridge presence in the chamber, [0615]
cartridge counter, [0616] fire clearance, [0617] selection: single
or burst, [0618] time & date, [0619] accredited users name (or
codes), [0620] battery.
[0621] In order to have essential information (authorization of
shooting, numbers of remaining cartridges, fire selection) the
display screen will advantageously be located (FIG. 29,
N.degree.132) at the back of the breech of the weapon, just below
it aiming sight, in order to be permanently visible when the weapon
is in its holster or, in particular, in line of sight before a
shooting.
[0622] A micro push-button will allow for the selection of the
various functions at the screen.
Shooting Recording
[0623] The electronic circuit of the weapon comprises a clock and a
memory whose information is displayable on interrogation via a
port, located inside the breech, for connection to a computer, said
port being accessible after introduction of an empty magazine in
its well and said breech having been pulled backwards (causing its
blocking in aft position).
[0624] The retrieval of this memory makes it possible to restore
all the elements of employment of the weapon: [0625] date &
hour of the shootings, [0626] selection (single or burst), [0627]
user identity, [0628] number of fired ammunition, [0629] date &
hour of users accreditation, [0630] total of fired ammunitions over
a period (e.g. year), [0631] statistics (barrel ageing,).
Cartridges Counter (FIGS. 28 & 29)
[0632] The knowledge of the number of remaining cartridges in a
weapon has always been crucial information for the user. Still
today, the absence of counting system obliges the user to a
differential computation between the consumed cartridges and the
initial capacity of the weapon in order to determine the number of
remaining ammunitions.
[0633] In order to ease the determination of the number of
remaining cartridges, the weapon integrates a cartridge counter
device by registering the presence of a cartridge in the chamber
and the knowledge of the position of the front and aft conveyers of
the magazine.
[0634] The use of an incompletely loaded magazine having no
possible justification unless for training purposes, it is thus
enough to know, for an operational use, the upper or lower position
of each compartment conveyer to deduct the number of remaining
cartridges prior to shooting.
[0635] For this purpose, the magazine well is equipped with
contactors (130, 131) located inside the frame at the top and
bottom of the motion sliding groove of each button of conveyer.
[0636] The information of position of each button thus collected is
transmitted to the central microprocessor which assigns a value,
contained in its memory and abounded of the detection of a possible
presence of cartridge in the barrel, reflecting the total capacity
of the weapon. The distinction between various models of magazines
(short, long . . . ) follows the same principle: a contactor (129)
located in the weapon magazine well allows the central processing
unit calculation, if actuated, to identify the type of magazine and
to display the information relating to effective capacity according
to the conveyers position and the information of presence of a
cartridge in the barrel.
[0637] For each shooting the central processing unit subs an
ammunition to the computed total and carries the result to the
screen. This method, inexpensive in term of production, does not
make it possible however to know the instantaneous capacity of a
partially furnished magazine engaged in the weapon.
[0638] For this purpose, the magazine well may integrate a sensor
scale to detect the passage of a marker (magnetic,
electroluminescent . . . ) located on the conveyer of each
compartment. Spacing between each sensor corresponds to the
displacement of the conveyer during the withdrawal of a cartridge
from the corresponding compartment.
[0639] The referencing of the position of each sensor will make it
possible the central processing unit to determine the capacity of
each compartment and abound it of the possible presence of a
cartridge in the barrel to establish the instantaneous capacity of
the weapon.
[0640] Note: the number of shots may be determined by the number of
discharges actually entered to the igniter (no electrical contact
in the absence of cartridge).
Biometrical Identification
[0641] In order to authorize shooting only to authorized weapon
owners or duly accredited persons, a fingerprint recognition device
is incorporated to the central block (133) located in the breech,
behind the cylinder head (124).
[0642] This device is coupled to a substrate (123), ensuring the
detection or analyze of the print characteristic points, applied to
the front face of the trigger.
[0643] The system is activated only when the counter-trigger safety
is de-activated, causing a slight recess of the trigger which comes
to press the master power switch (125) of the weapon circuits,
located behind the trigger near the single (126) and full-auto
(127) fire switches. The identification module is then under
tension and its role and to authorize the shooting after a positive
identification of the user fingerprint.
[0644] Note: the master power switch of the weapon and the single
fire contactor may advantageously be integrated into a two levels
contactor or in a rotactor (125 bis).
Accreditation Procedure
[0645] In order to ensure a control and a permanent follow-up of
the users (individuals, administrations, armed forces, special
forces . . . ) an accreditation procedure or memorisation of the
fingerprints is established according to a two levels principle of
accreditation.
[0646] For this purpose, the memory size of the block of
identification is divided into two compartments of which one (136)
is reserved for the recording of the prints of the entitling people
and the other (135) with that of the competent people.
First Level
[0647] This level corresponds to that of enabling private
individuals by the only proper competent authorities to carry out
accreditations of use of a weapon. This operation is made
impossible for any user who would not have been designated as
such.
[0648] For this purpose, the identification block memory
compartment (136) is accessible only by one port (137) located
inside the breech of the weapon and the memory saving of the
desired prints is carried out after the unlocking of the access to
said memory via a software (PC) and a special connecting cable.
[0649] This software unlocks, via a code, the access to the
compartment report during a lapse of time (a few minutes)
sufficient to allow the user accreditation.
[0650] Accreditation procedure: [0651] withdraw the weapon locker
for complete unlocking, [0652] withdraw the magazine and check that
no ammunition is present in the chamber, [0653] pull the breech
back and lock it with the arrester, [0654] connect the cable to the
computer via the port located inside at the back of breech, [0655]
initialize the unlocking software and enter the authority access
code then the name and the identifying code of the person to be
entitled. [0656] await the weapon unlocking confirmation signal
(sound), [0657] check the counter-trigger is unlocked, [0658] affix
the finger of the person to be accredited on the trigger, [0659]
wait for the of end of accreditation signal (sound), [0660]
disconnect the wire from the port of the breech, [0661] the weapon
is now usable by new the accredited person only.
[0662] Note: this procedure, which may be used by the
administrations in their buildings (police station . . . ) is
particularly adapted to the diffusion of the weapon via the
traditional distribution networks (arms manufacturers . . . ),
where the personal code of the future weapon owner is directly and
beforehand addressed by the administration.
[0663] The sole accredited person (excluding any other) can then
use the weapon. A validity period may be introduced in order to
require the user to periodically stop by the authority services to
unlock his weapon.
Second Level
[0664] This level allows the transfer of habilitation from an
authority known as "entitling" towards an end user via a simplified
procedure, requiring no wiring between the weapon and the computer
in order to be quickly performed in operations. No capacity of
transfer of the accreditation is then allotted to new the
ability.
[0665] Quick accreditation procedure: [0666] withdraw the weapon
locker for complete unlocking, [0667] withdraw the magazine and
check that no ammunition is present in the chamber, [0668] unlock
the counter-trigger, [0669] initiate a sequence by carrying out a
preset number (for example five) of complete and successive
pressures on the trigger, [0670] affix the finger of the entitling
person on the trigger, [0671] await the authorization signal for
accreditation sequence (sound), [0672] in the next XX seconds (for
example thirty, the authorization sequence stops after) affix the
finger of the new user during five seconds on the trigger, [0673]
the emission of a new signal (sound) confirms the new user
accreditation (only one possible) and the opening of a new
accreditation sequence, [0674] the absence of fingerprint on the
trigger during an accreditation sequence closes it
automatically.
[0675] The weapon will be only usable by the entitling person and
those who have been entitled.
[0676] Note: this secondary accreditation procedure is
discretionary. Only the concerned administrations will benefit from
this fast enabling possibility whose implementation is carried out
via a specific code delivered by the manufacturer.
Resistance to Electromagnetic Flashes and Other Inductive
Currents
[0677] The weapon according to the invention must be capable of
irreproachable operation whatever may be the environmental
conditions (violent storms, strong radars radiation, nuclear
electromagnetic flashes . . . ). For this purpose, necessary
shielding of the vital elements (central processing unit,
identification memories block . .) will be adopted in order to
guarantee a perfect insensibility to these phenomena.
Advantages of the Weapon and the Ammunition According to the
Invention
[0678] The weapon and the ammunition according to the invention
carry many advantages compared to the current solutions, in
particular in term of precision and fire power. These advantages
are indexed as follows.
Precision
[0679] The barrel is either assembled fixed, rigid, or sliding in
its bedding removing de facto any problem of repositioning between
each shooting as per the majority of the weapons in service.
[0680] The telescopic barrel device also adds of this precision by
offering guidance lengthened travel to the ammunition.
Safety
[0681] A higher reliability compared to that of the weapons with
cased ammunition whose base is protruding outside the barrel
chamber during firing, exposing the gunner to a burst risk of the
case and primer wall. This patent, on the other hand, rests on a
principle of drenching the ammunition into a tight sealed and
confined chamber with the benefit of the walls thickness of the
barrel and the seating piston.
[0682] Trigger safety, made up of a particularly innovative
"counter-trigger" since it favors a fast operation with the sole
hand holding the weapon, in a fully ambidextrous way.
[0683] Easy, simplified and economic storage: limited to the ready
for use ammunitions. The suppression of the worn case collecting,
treatment and reconditioning procedures is synonymous of
substantial savings.
[0684] Quadruple weapon safety by introduction of a removable
locker for trigger, breech, magazine well and disassembling bolt
locking.
[0685] Systematic enabling of the gunners making the weapon
according to the invention the true response to the problems of
unauthorized use.
Operational Use
[0686] Reduced size and weight: the principle of the invention
makes it possible to position the recuperator spring, ensuring the
recall of the slide in closed position, around the barrel. This
provision is particularly advantageous as size regards since it
avoids the use of any stem guide as required on the majority of the
current weapons functioning with combined barrel and slide
recess.
[0687] The weight of the weapon and its overall size profits from
the suppression of this part. As example, the realization of an
automatic handgun according to the invention would lead to a weight
of the weapon, including a forty cartridges loaded magazine, lower
than 700 grams.
[0688] Advantages of the tandem magazine: this disposition of the
compartments combined with a three piles organisation of the
ammunitions in the magazine makes it possible to carry up to three
times the current magazines capacity, that is to say more than
forty cartridges.
[0689] This device concentrates the fire power of a machine-gun in
an automatic handgun, paving the way to a new market of compact and
light weapons with superior fire power.
[0690] Unequalled discretion by absence of traces (cases) after
shooting.
[0691] Reinforced effectiveness of the ammunition which benefit
from a weight and size reduction up to 50% of that of the
traditional ammunition with equal performances.
[0692] Increase in the fire power for the same weight of
ammunition, the effective (or projectable) mass is equal to that
carried, that is to say 50% more than with classic ammunitions.
[0693] Suppression of the classical jamming risk encountered during
cased cartridges ejection.
[0694] Suppression of chamber case adherence and the consecutive
immobilization of the weapon.
[0695] Suppression of burns risks when a case comes into contact
with the skin.
[0696] Maintenance and disassembling of the weapon simplified. the
absence of disassembling key and other loose parts, make a weapon
according to the invention a model particularly simple and quick to
dismount for servicing.
* * * * *