U.S. patent application number 11/067654 was filed with the patent office on 2005-11-03 for rotating, explosive sub-calibrated projectile.
Invention is credited to Garcia, Juan Martinez.
Application Number | 20050241524 11/067654 |
Document ID | / |
Family ID | 26156215 |
Filed Date | 2005-11-03 |
United States Patent
Application |
20050241524 |
Kind Code |
A1 |
Garcia, Juan Martinez |
November 3, 2005 |
Rotating, explosive sub-calibrated projectile
Abstract
A projectile (1) is composed of a body divided into a front part
(2) and a rear part (3), the latter being hollow. An axial rod (4)
is embedded and fixed in the front part under pressure. The axial
rod (4) terminates in a hard tip (6), which is located towards the
front, and which is conical in shape and terminates in the form of
a cap (7). The tip (6) closes the front end of an air chamber (5)
positioned axially in the front part (2) of the body (1) of the
projectile. Upon impact, the tip (6) is displaced towards the
inside of the chamber (5), which causes it to be compressed, thus
converting the projectile (1) into pellets. The body of the
projectile (1) is cylindrical and has helicoidal external grooves.
The body is made of lead with high antimony content. The projectile
is arranged within a container, which retains it and acts
additionally as a shock-absorbing element and stopper for the gases
generated upon firing.
Inventors: |
Garcia, Juan Martinez;
(Pozoblanco, ES) |
Correspondence
Address: |
WENDEROTH, LIND & PONACK, L.L.P.
2033 K STREET N. W.
SUITE 800
WASHINGTON
DC
20006-1021
US
|
Family ID: |
26156215 |
Appl. No.: |
11/067654 |
Filed: |
February 28, 2005 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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11067654 |
Feb 28, 2005 |
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10220339 |
Dec 27, 2002 |
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10220339 |
Dec 27, 2002 |
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PCT/ES01/00502 |
Dec 21, 2001 |
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Current U.S.
Class: |
102/521 |
Current CPC
Class: |
F42B 7/08 20130101; F42B
14/064 20130101; F42B 12/34 20130101 |
Class at
Publication: |
102/521 |
International
Class: |
F42B 014/06 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 3, 2001 |
ES |
P 200100010 |
Jul 3, 2001 |
ES |
A 200101546 |
Claims
1. A rotating, compressed air-explosive, sub-calibrated projectile,
formed as a single body that is 31 mm high by 15 mm diameter, said
single body having two cavities, one cavity being formed in an
upper part and being 7 mm diameter by 12 mm high and forming an
explosion cavity, and the other cavity being formed in a lower part
of the projectile and being 9.5 mm diameter by 11 mm high, to
lighten the weight and avoid pitching which endangers the
projectile's trajectory when it is shot.
2. The sub-calibrated projectile for guns, according to claim 1,
wherein the projectile has longitudinally engraved on its
periphery, in a plane inclined by 5 degrees, twelve helicoidal ribs
intended to incide in the air layers when shot, wherein the
projectile is rotatable at 3000 rpm which stabilizes it in flight
and partly, excepting the attraction to earth, achieving a scope of
double to triple that of all known gun bullets.
3. The sub-calibrated projectile for guns, according to claim 1,
further comprising a steel rod-fuse axially running through the
body of the projectile which, in its front part, has a 9.5 mm
diameter truncated-cone at its base and is 4 mm high, said front
part acting as a fuse and covering the explosion chamber such that,
when shot and on impact, air in the explosion chamber is
pressurized thereby pressurizing the air causing said projectile to
explode.
4. The sub-calibrated projectile according to claim 1, wherein the
other cavity is filled with cork.
5. A subcalibrated projectile for a shotgun, said projectile
comprising: a single projectile body having a forward section
defining an air chamber, and a rear section defining a rear
chamber, wherein said forward section has an annular step formed on
an exterior peripheral surface; and an axial rod fixed under
pressure in said projectile body so as to extend through and close
said air chamber, said rod terminating in a tip positioned at the
forward end of said projectile body, wherein said tip has a conical
surface that is engaged with the forward end of said projectile
body, and a convex external peripheral surface, wherein, upon
impact, the air chamber is compressed by the tip of said rod.
6. The subcalibrated projectile as claimed in claim 5, wherein said
projectile body has a plurality of helicoidal grooves formed in an
outer surface of said projectile body.
7. The subcalibrated projectile as claimed in claim 6, further
comprising a filler material provided in the rear chamber of said
rear section, wherein a rear portion of said rod extends through
the filler material and a terminal end of said rear portion of said
rod is fixed to said projectile body by means of a pressurized
nut.
8. The subcalibrated projectile as claimed in claim 7, wherein said
filler material comprises a high-pressure polythene.
9. A subcalibrated projectile for a shotgun, said projectile
comprising: a single projectile body having a forward section
defining an air chamber, a hollow rear section, and a plurality of
helicoidal grooves formed on an outer surface of said projectile
body, wherein said forward section has an annular step formed on an
exterior peripheral surface; and a rod axially fixed under pressure
in said projectile body so as to extend through and close said air
chamber, said rod terminating in a tip positioned at the forward
terminal end of said projectile body, wherein said tip has a
conical exterior surface, and a flat base supported on a
complementary surface at the forward terminal end of said
projectile body, wherein upon impact, the air chamber is compressed
by the tip of said steel rod to transform said projectile body into
pellets.
10. The combination as claimed in claim 9, wherein said projectile
body has a plurality of helicoidal grooves formed in an outer
surface of said projectile body.
Description
[0001] This is a Continuation-in-Part application of Ser. No.
10/220,339, Dec. 27, 2002, which is the National Stage of
International Application No. PCT/ES01/00502, filed Dec. 21,
2001.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The present invention relates to a sub-calibrated projectile
(as it has a smaller diameter than the barrel of the gun in which
it is used), rotating, as it rotates when it is shot at 3000 rpm
and compressed air explosive as will be explained hereunder.
[0004] The object of the invention is to provide shooters and
hunters with a projectile capable of reaching twice the distance of
all known projectiles, due to its gyroscopic stability and being
explosive, with exceptional stopping power which has not yet been
constructed in any world nation.
[0005] To avoid deformation in the projectile on explosion with
pressures of up to 900 kilos cm.sup.2, it has a lead base to which
2% antimony is added. Its extraordinary scope is due to the
projectile rotating and stabilizing itself in flight, partly
excepting the attraction to earth and its explosiveness is due to
it having an air chamber, which upon being compressed on the choke,
is pressurized, thereby converting the projectile to shrapnel.
[0006] The projectile has twelve engraved ribs (it may have more or
less), the plane is inclined by 5 degrees, which on inciding in the
air layers at a rate of 500 meters per second, causes it to rotate
at 3,000 rpm.
[0007] The present invention refers to a subcalibrated projectile
intended to be mounted in a container, in which it is suitably
retained, in order to achieve the total immobilization of the
projectile inside the cartridge and subsequently in the barrel of
the firearm. The container serves as a means for absorbing pressure
and as a stopper for the firing gases. The subcalibrated projectile
is materialized in a single-piece body which is complemented with
an axial rod which is embedded under pressure inside the body of
the projectile. The rod terminates in a conical point which
projects beyond the fore-end of the projectile and also is grooved
heliocoidally on the outside in a markedly inclined plane, which
provides a high gyroscopic velocity and exceptional spin
precision.
[0008] The projectile of this invention is intended to be fired by
firearms, to be more precise, shotguns used for hunting game.
[0009] The object of the invention is to provide the world of
hunting with a projectile which, in addition to offering great
range on account of its particular characteristics, and together
with its great shooting speed and precision, is transformed into
pellets upon impact with the animal, thus bringing about maximum
efficiency in the use of the projectile itself.
[0010] 2. Description of Related Art
[0011] The projectiles used in hunting shotguns usually have a
smooth external surface which gives rise to a lack of stability
upon being fired and a modest range. Although it should be said
that there exist some projectiles composed of two bodies fixed to
each other and complemented with a rod which, in addition to there
being a bushing through the bodies and comprising the means by
which the two are fixed together, is terminated in a point which is
harder than the aforementioned bodies, conical in shape and forms
the frontal medium which has to impact first upon the target,
generally upon an animal.
[0012] In relation to this type of projectile, worth mentioning is
the one claimed in the Spanish Utility Model 9902957 of the same
applicant, in which the end of the frontal tip is truncated,
forming a tapered body, in such a way that the two basic bodies of
the projectile have complementary means of axial connection. The
bodies are fixed by means of a nut that screws into the rear end of
the rod corresponding to the tapered body or tip mentioned above.
The rear body is complemented with a back board to conceal the nut
for tightening and fixing, while in the front body there is an air
chamber which is closed by the base of the tapered body or the
aforementioned tip. The shape of the body comprising the two
aforementioned bodies and the front body tapers slightly, and is
grooved longitudinally, though with a slight inclination, and is
endowed towards the rear with a smooth band which adapts to the
corresponding bore of the firearm in order to avoid the escape of
gases that originate in the explosion, thus achieving greater
firing effectiveness.
[0013] At present, there are no gun projectiles with an efficient
gyroscopic rate, or explosiveness.
[0014] Nevertheless, there is a projectile having these rotational
and explosive characteristics, which is that claimed in U.S. Pat.
No. 6,349,651 B1 issued to the same applicant.
SUMMARY OF THE INVENTION
[0015] The proposed projectile, is based on that disclosed in the
aforementioned Spanish Utility Model 9902957 presents a series of
improvements or new features which give rise to some new
performance qualities in the behavior of the projectile.
[0016] To be more precise, the projectile of the present invention
has a single body, which is cylindrical in shape, with a totally
hollow rear part to lighten the weight and a front part where the
corresponding rod is located axially, terminating in the
projectile's hard front tip. The tip is conical in shape but for
its external base in the shape of a spherical cap which allows the
hard point of the projectile's rod to fit perfectly in the mouth of
the air chamber, while the rest of the rod is fitted into the rear
part of the body under pressure in order to be bonded to it
perfectly.
[0017] At the same time, it has been planned for the number of
grooves set into the lateral surface of the projectile's body to be
several, and markedly inclined, which enables the projectile to be
endowed with a gyroscopic speed which is practically the same as
that achieved by means of a rifle.
[0018] The hollow rear part of the body, as well as lightening its
weight, allows the trajectory to be equilibrated in flight, thus
avoiding pitching or deviations on account of the front part's
being much heavier than its rear part or tail.
[0019] The nature or material of the body of the projectile is by
preference lead, with high antimony content, thus avoiding possible
deformation within the firearm's barrel, even when the pressure to
which it is subjected is the maximum, approximately 900
Kg/cm.sup.2, so that, since it suffers no deformation within the
barrel, its precision increases as its grooves will remain
intact.
[0020] At the same time, the subcalibrated projectile of the
invention offers the great advantage of causing absolutely no
damage to the firearm's necking, since its diameter is two
millimeters less than that of the barrel of the firearm or shotgun
which fires it.
[0021] The aforementioned projectile also offers the advantage that
when the tip, in the form of a cap, impacts against the animal, it
sinks back and enters the air chamber, which is found in the rear
part of the projectile's body where it is transformed into pellets
and provokes a shock wave within the animal.
[0022] This projectile, as mentioned above, is complemented with a
container formed by some rectangular tabs set at equal angles to
each other and provided on their inside face with a claw to fix the
projectile, by means of a ring-step in the projectile in which
these claws lodge. The tabs emerge from a rear part, which is
closed to serve as a base coupled to some means of
shock-absorption. This container acts to immobilize the projectile
in the cartridge and in the barrel of the firearm, as well as
absorbing pressure and serving as a stopper for the firing gases,
and is preferably made of dense polythene.
[0023] In an alternative embodiment, the hollow rear part of the
projectile is filled with some material, preferably highly
pressurized polythene, through which passes the axial rod as it
reaches towards the rear part as far as the very lower base of the
body of the projectile, where it is fixed under pressure with a
special nut.
[0024] In another alternative embodiment, the conical tip forming
the front end of the rod takes, instead of the form of a cap, the
shape of a perfect cone, resting at its base on the flat end, which
terminates at the rear part of the body of the projectile.
[0025] In another alternative embodiment, the container's tabs are
endowed with some arching projections, instead of with locking
claws on its inside face, from which and as far as the free end of
the tabs come into being sloping sections or surfaces which, on
exposure to the pressurized air, assist in the opening of the tabs
in order to set the projectile free, thus making its exit or
departure from the container easier.
BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to complement the current description and with the
aim of assisting in the better understanding of the invention's
features in accordance with a preferred example of its practical
embodiment, a set of drawings is attached, forming an integral part
of said description, where for illustrative but not restrictive
purposes the following is shown:
[0027] FIG. 1 shows a longitudinal cross-sectional view of a
subcalibrated projectile embodied in accordance with the object of
the present invention;
[0028] FIG. 2 shows a side view of the projectile represented in
the previous figure;
[0029] FIG. 3 shows a cross-sectional view of a container for the
positioning of the projectile represented in the previous
figures;
[0030] FIG. 4 shows a side elevational view of the projectile
positioned inside the container represented in the previous
figure;
[0031] FIG. 5 shows a longitudinal cross-sectional view of the
projectile, as represented in FIG. 1, in the alternative embodiment
whereby the hollow upper part is filled with a material through
which passes the rod itself;
[0032] FIG. 6 shows a cross-sectional view of the front end of the
projectile, where the tip of the rod as it emerges out of the front
end of the projectile is conical in shape;
[0033] FIG. 7 shows a side view of an alternative embodiment of the
container, in which the internal projections of the tab are
rounded, and from them, and as far as the free end of those tabs,
sloping surfaces come into being; and
[0034] FIG. 8 shows, finally, a side elevational view of the
projectile as a whole, situated inside the container corresponding
to the previous figure, and where the projectile's rod has a
conical end or tip.
[0035] FIG. 9 is a longitudinal sectional view of the
sub-calibrated projectile and its internal parts, letting the
configuration corresponding to the axial rod 6 be observed, with
its point 9 in truncated-cone shape, which acts as a fuse.
[0036] FIG. 10 shows a view of the projectile with the upper end of
the rod-fuse. This projectile is provided with twelve helicoidal
ribs--which may equally function with more or less--, at 5 degrees
inclination, 1.5 mm thick, with a depth of 1 mm in its lower part
and 2.5 mm in its upper part.
PREFERRED EMBODIMENTS OF THE INVENTION
[0037] This projectile is called sub-calibrated as it has a
diameter less than that of the barrel it is shot from, with the aim
of not damaging the weapon's barrel, reducing the diameter so that
it incides in the air layers it traverses more easily. This
projectile is situated within a plastic block which makes it better
fit in the barrel and avoid the projectile from rubbing against the
weapon's walls.
[0038] As may be seen in the aforementioned figures, the projectile
(1) of the invention comprises a body with a front part (2), a
totally hollow rear part (3), a rod (4) mounted in the front part
which is held in place under pressure and passes axially and
continuously through a chamber (5) located in the front part (2).
The rod (4) terminates in a conically shaped tip (6). The external
face of the tip has the form of a cap (7) or convex curve. Due to
the tip's (6) taper, it fits into the mouth of the chamber (5), as
shown clearly in FIG. 1. The body (1) of the projectile is
cylindrical and is provided with an annular step (8), which is
close to the front end, and more precisely, behind the tapered part
of the body (1) that terminates towards its front end. The body is
made of lead with antimony, while the rod (4), together with its
tip (6), is made of steel and the tip constitutes a fuse. The
lateral surface of the projectile's body (1) is provided with
various helicoidal grooves (1'), both on the front part (2) and on
the rear, hollow part (3), as shown in FIG. 2.
[0039] The aforementioned projectile (1) is designed to be housed
and completely immobilized within a container (9), formed with
various tabs (10) set at equal angular intervals to each other in a
circular trajectory in order to house the cylindrical body (1) of
the projectile properly, as shown in FIG. 4. These tabs (10) are
each provided with claws (11) which lock onto the step (8) of the
body (1) of the projectile, thus providing a means for interlocking
the body and the container (9). The rear part of the container is
formed by a base (12) from which extends an appropriate means of
shock-absorption (13). A stopper ring (14) extends from the shock
absorbing means (13) and over the corresponding gunpowder of the
cartridge wherein will be situated the combination of container (9)
and projectile (1).
[0040] In this way, it is the container (9), which holds the
projectile (1) inside the firearm's barrel, and serves as a shock
absorber and stopper for the gases generated by the firing
itself.
[0041] The hollow rear part (3) of the projectile (1), in addition
to lightening the latter's weight, is intended to balance the
trajectory of the projectile in flight, thereby avoiding pitching
or deviations since it is much lighter than the front part (2) of
the same projectile.
[0042] As for the air chamber (5) in the front part (2) of the
projectile, when compressed on impact by the tip (6) of the rod
(4), it converts the projectile (1) into pellets, as a result of
which the efficacy is optimal.
[0043] It should also be mentioned that the projectile is a
subcalibrated projectile provided with helicoidal grooves (1')
which provide the projectile with a gyroscopic speed as if it were
fired by a rifle, thus achieving exceptional precision.
[0044] In an alternative embodiment shown in FIG. 5, the hollow
(3') of the rear part (3) is filled with some material (15),
preferably high-pressure polythene. The rod (4) passes through the
material, and the rod extends backwards before being fixed at its
rear end by means of a special pressurized nut (16).
[0045] It is also worth mentioning that the rod (4), instead of
having the end (6) of the outer surface rounded or in the form of a
cap, is conical in form (6') and rests at its base on the end of
the front part (2) of the projectile's body (1).
[0046] In another alternative embodiment, the tabs (10) of the
container (9), instead of being provided with the claws (11), have
some rounded and internal projections (11'). The projections (11')
are each formed sections with a sloping surface (17) which assists
the departure of the projectile (1) from the container (9), since
these sloping planes of surfaces (17) enable the tabs (10) to open
better when exposed to the pressurized air.
[0047] The body of the projectile (1) may be formed without the
grooves (11), that is to say, it may present a smooth external
surface, which would enable it to be used in rifle-barrelled
shotguns and in smooth-bore shotguns.
[0048] In the embodiment illustrated in FIGS. 9 and 10, the
rotating, explosive projectile is comprised of a single-part body,
plus a 2.7 mm .phi. steel top-to-bottom through-rod with a 9.5 mm
diameter head and 4 mm high, intended to obstruct the explosion
chamber 2 with which it is provided. Indeed, as seen in FIG. 9, the
chamber 2 is 7 mm diameter by 12 mm high, the steel rod 6 traverses
it and is fixed to the body of the projectile at its pitch which is
0.25 mm narrower than its thickness which is 2.7 mm. This rod acts
as a fuse, when the projectile hits anything, even water, the
compressed air contained in the explosion chamber is pressurized
and the whole projectile becomes shrapnel. As shown in FIG. 9, the
lower part of this projectile has a cavity 5 that is filled with a
block of cork, to lighten the weight of this rear part and avoid
pitching, thereby achieving perfect flight. This cavity has a 9.5
mm diameter and is 11 mm high.
* * * * *