U.S. patent application number 10/340768 was filed with the patent office on 2003-10-02 for closed bolt firing delayed blowback automatic handgun firearm.
Invention is credited to LaFleur, Gary Kenneth.
Application Number | 20030183068 10/340768 |
Document ID | / |
Family ID | 24239463 |
Filed Date | 2003-10-02 |
United States Patent
Application |
20030183068 |
Kind Code |
A1 |
LaFleur, Gary Kenneth |
October 2, 2003 |
Closed bolt firing delayed blowback automatic handgun firearm
Abstract
A firearm having a safety device known as a Detachable Firing
Assembly. This removable section of a firearm houses the firing
hammer and is instantly removed to completely disable a firearm and
is to kept in a location other than the firearm itself.
Inventors: |
LaFleur, Gary Kenneth;
(Chelmsford, MA) |
Correspondence
Address: |
Gary Kenneth LaFleur
146 Tyngsborough Road #101
North Chelms Ford
MA
01863
US
|
Family ID: |
24239463 |
Appl. No.: |
10/340768 |
Filed: |
January 10, 2003 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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10340768 |
Jan 10, 2003 |
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09560806 |
Apr 28, 2000 |
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6530306 |
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Current U.S.
Class: |
89/188 |
Current CPC
Class: |
F41A 17/64 20130101;
F41A 9/50 20130101; F41A 19/48 20130101; F41A 17/32 20130101; F41A
3/46 20130101; F41A 9/38 20130101 |
Class at
Publication: |
89/188 |
International
Class: |
F41A 001/00; F41F
001/00; F41C 003/00 |
Claims
I hereby claim:
1. A closed Bolt Firing Delayed Blowback Automatic Handgun Firearm
which employs: A Spinning-lock Breech Bolt and Breech Bolt Receiver
System as specified in claim 2.
2. A Spinning Lock Breech Bolt and Breech Bolt Receiver (SLR)
System comprising: a firearm barrel which has a breech bolt hood
fastened to it and, then together, the two act as a breech forward
firearm breech bolt receiver by guiding the reciprocating motion of
a telescoping, spring loaded, L-shaped, firearm breech bolt which
has a built-in, duel function, breech locking system that conforms
to the specification of claim 17 comprising, a pair of locking
balls and spring loaded wedge, a wedge stud pin, a manual operating
handle, a thumb wheel operated rotating lockshaft, a spring loaded
detent pin and a lockable spring loaded firing pin.
3. The SLR System of claim 2 wherein: said firearm barrel is
located between and acts as a stressed member for said firearm
breech bolt hood and a firearm frame.
4. The SLR System of claim 2 wherein: said firearm breech bolt hood
is an open side down, U-shaped, channel walled off at its front
end, and fastened to said firearm barrel with machine screws.
5. The SLR System of claim 2 wherein: a mounting surface for the
desired trajectory sighting system is provided by a U-shaped
channel, welded to said breech bolt hood, running the length of
said breech bolt hood and also extending past the breech bolt hoods
rear end to shield said rotating lockshafts thumb wheel.
6. The SLR system of claim 2 wherein: said firearm breech bolt
differs from previous designs of telescoping, L-shaped, firearm
breech bolts, specifically, in that its recoil or rearward motion
is limited by a step in its front underside that contacts a step in
the top surface of said firearm barrel, rather than using a
mechanical stop located behind the breech bolt as in previous
L-shaped firearm breech bolt applications.
7. The SLR System of claim 2 wherein: an extension spring loads
said firearm breech bolt forward to the breech closed position by
tethering from the front wall of said firearm breech bolt hood to a
press fit cross pin inside said firearm breech bolt.
8. The SLR System of claim 2 wherein: said pair of locking balls,
which float in a vertical bore inside said firearm breech bolt, are
parted vertically by said spring loaded wedge so that said locking
balls will project outward from said L-shaped breech bolt to engage
recesses in said firearm breech bolt receiver to lock said firearm
breech bolt forward in its breech closed position.
9. The SLR System of claim 2 wherein: a compression spring loads
said wedge forward and said wedge has said wedge stud pin
protruding upward from it for the purpose of retaining said wedge
within a slotted bore inside said firearm breech bolt and to
provide said wedge with a link to said manual operating handle.
10. The SLR System of claim 2 wherein: said manual operating handle
is a blade, sandwiched between said firearm breech bolt and said
firearm breech bolt hood, which perpendicularly joins a right and
left grip pad and has a closed ended slot through the front end of
the blade, that permits its interaction with said wedge stud pin,
and a keyhole slot through the rear end of the blade, through which
passes said rotating lockshaft and said detent pin.
11. The SLR System of claim 2 wherein: a press fit pin inside said
firearm breech bolt distends a continuous circumferential groove
cut into said rotating lockshaft to provide the means by which said
rotating lockshaft is retained within a vertical bore inside the
rear end of said firearm breech bolt and said rotating lockshaft
acts as both the retaining and the locking device for said firearm
breech bolts manual operating handle and said firearm breech bolts
firing pin.
12. The SLR System of claim 2 wherein: said rotating lockshaft can
be rotated continuously in either direction and changes lock
position every ninety degrees of rotation by operating said thumb
wheel located at the top end of said rotating lockshaft which, when
rotated, changes the revolutionary positions of a top and a bottom
pair of parallel flats, notched into said rotating lockshaft, which
are perpendicular to each other.
13. The SLR System of claim 2 wherein: said rotating lockshaft has
two circumferential rows of lock position status symbols that
appear through windows in both sides and the rear end of said
firearm breech bolt to indicate said rotating lockshafts
position.
14. The SLR System of claim 2 wherein: said rotating lockshafts
thumb operated wheel is a disc knurled on its circumferential
surface with four recesses on its bottom surface, spaced ninety
degrees apart, which interacts with said spring loaded detent pin
to provide the tactile means by which said rotating lockshafts lock
positions can be found and to hold said thumb wheel, and thus said
lockshaft in the desired position.
15. The SLR System of claim 2 wherein: a compression spring loads
upward said detent pin which protrudes from a vertical bore in said
firearms breech bolt contacting the lower surface of said rotating
lockshafts thumb wheel.
16. The SLR System of claim 2 wherein: a compression spring loads
rearward said lockable firing pin which has a notch, with square
corners, that forms a front and a rear step, which are
perpendicular to said firing pins axis, that makes possible the
control of both the position and movement of said firing pin as
said firing pins notch is distended perpendicularly by the bottom
end of said rotating lockshaft.
17. Any Duel Function Breech Locking Mechanism which locks closed
the breech bolt of a firearm for the purpose of discharging the
firearm and for the secondary purpose of deactivating the firearm
by having the ability to lock and unlock the firearms breech bolt
operating handle, which operates the breech bolt in addition to
manually releasing the firearms breech locking mechanism, but
claimed only if the breech bolts operating handles locking device
simultaneously locks and un-locks the firearms firing pin.
18. A Closed Bolt Firing Delayed Blowback Automatic Handgun Firearm
which employs: a detachable firing assembly as specified in claim
19.
19. A Detachable Firing Assembly which conforms to the
specification of claim 23 by attaching to the rear of a handgun
firearms gripframe using an interlocking groove at its top end and
a spring loaded, ball pointed, holding pin, contained within, that
protrudes downward from its bottom.
20. The Detachable Firing Assembly of claim 19 wherein: a firing
hammer and said ball pointed holding pin share the same spring.
21. The Detachable Firing Assembly of claim 19 which: when utilized
by an automatic handgun firearm, shall house the firing hammer and
all of its constituents in mechanism except for the firearms firing
trigger, its firing pin and its breech bolt.
22. An Automatic Handgun Firearm Gripframe which accommodates the
detachable firing assembly of claim 21 by having both sides of the
magazine well joined at the rear of the gripframe by only a cross
member at the top and a cross member at the bottom.
23. Any Detachable Firing Assembly which attaches to and detaches
from a firearm without separate fasteners, such as screws or pins,
to permit the instantaneous detachment of such a firing assembly
for the sole purpose of disabling a firearm when it is stored, and
a detachable firing assembly shall be considered as such when it
houses, but not limited to, a firearms firing hammer.
24. The Use of a Horned Firearm Magazine when its horn, which
extends out from the floor of the magazine, acts as a tool for
removing the detachable firing assembly of claim 23 from a
firearm.
25. A Closed Bolt Firing Delayed Blowback Automatic Handgun Firearm
which employs: a gripframe, fabricated from sheet metal rather than
a forging, but only when said gripframe is constructed in the exact
manner specified in claim 26.
26. An Automatic Handgun Firearm Gripframe wherein a right and a
left side frame plate are joined, using the process of welding, by
two ninety degree flanges, one projecting from each plate, that are
fused together to form the front wall of the magazine well and at
the rear of the gripframe by only a cross member at the top and a
cross member at the bottom and by both ends of an L-shaped trigger
guard and by a firearm barrel which is located at the top of the
gripframe.
27. A Closed Bolt Firing Delayed Blowback Automatic Handgun Firearm
which employs: A Trigger Operated Breech Bolt Lock-back Releasing
(TLR) System, conforming to the specification of claim 40,
comprising a breech bolt catch, a breech bolt catch engaging lever
and its two stud pins, a cam following lever, a hinge pin, a
sliding cam, a first and a second extension spring.
28. The TLR system of claim 27 wherein: said breech bolt catch is a
bar that reciprocates vertically between said barrel and said
breech bolt hood to catch said breech bolt in and release said
breech bolt from its lock-back position also known as the breech
open position.
29. The TLR system of claim 27 wherein: a machine screw links the
bottom end of said breech bolt catch to the rear moving end of said
breech bolt catch engaging lever.
30. The TLR system of claim 27 wherein: said hinge pin provides a
pivot point for the front end of said breech bolt catch engaging
lever and said cam following lever which, both, run from front to
rear horizontally and are sandwiched side by side inside said
handguns gripframe above its firing trigger below its barrel and
just in front of its magazine well.
31. The TLR system of claim 27 wherein: said sliding cam provides
for the eventual downward tangential releasing motion of said
breech bolt catch by being affixed to an extension of and deriving
its action from said firearms firing trigger.
32. The TLR system of claim 27 wherein: both said breech bolt catch
engaging lever and said cam following lever arc from a radial
attitude parallel to the motion of said sliding cam, which
reciprocates from front to rear and projects downward.
33. The TLR system of claim 27 wherein: said breech bolt catch
engaging levers rear end contacts said handgun firearms magazine
cartridge feeder when it rises to the top of the empty magazine as
said breech bolt moves rearward, and thus, said breech bolt catch
engaging lever arcs upward, with the rising cartridge feeder,
forcing said breech bolt catch to distend a notch in the bottom of
said breech bolt, and thus further, said breech bolt is locked in
its lock-back position or, otherwise known as, its breech open
position.
34. The TLR system of claim 27 wherein: said cam following lever
can arc on the same radius as said breech bolt catch engaging lever
and can reciprocate on a tangent from that radius for the purpose
of escaping the forward motion of the reciprocating action of said
sliding cam and thus said firearms firing trigger can reset to the
forward position, after being used to initiate the discharge of
said firearm, without causing the breech bolt to close the
breech.
35. The TLR system of claim 27 wherein: said cam following lever is
a blade which lays on a flat side of said breech bolt catch
engaging lever and has a triangular pawl projecting upward from its
top edge and its ability to reciprocate independently is achieved
by a horizontal closed ended slot in its front end, through which
passes said hinge pin, and closed ended slot in its rear end, which
inclines rearward, through which passes a front stud pin,
protruding from the side of said breech bolt catch engaging
lever.
36. The TLR system of claim 27 wherein: a rear stud pin which
protrudes from the side of said breech bolt catch engaging lever
limits the forward motion of said sliding cam and thus said handgun
firearms firing trigger by contacting the front of said handgun
firearm firing triggers sliding cam extension arm.
37. The TLR system of claim 27 wherein: said first extension spring
loads said cam following levers pawl rearward and upward by
tethering from said cam following lever to said breech bolt catch
engaging lever.
38. The TLR system of claim 27, wherein: said second extension
spring loads said breech bolt catch engaging lever downward and
said sliding cam forward by tethering from said sliding cams
extension arm to an arm which projects upward from said breech bolt
catch engaging lever.
39. The TLR system of claim 27 wherein: said breech bolt catch is
disengaged, allowing said breech bolt to close, when said breech
bolt catch engaging lever is forced to arc downward by said cam
following lever which derives its tangential motion from the
rearward movement of said sliding cam which is actuated by said
firearms firing trigger.
40. Any Trigger Operated Breech Bolt Lock-back Releasing (TLR)
System which, by specific definition, is a system for any closed
bolt firing automatic loading magazine fed firearm that utilizes
the firing trigger, that which initiates the discharge of a
firearm, to also initiate the release of a spring loaded firearm
breech bolt from its lock-back position, also known as the breech
open position, for the purpose of reloading without regard for what
design of secondary mechanism converts the firing triggers rearward
movement, only, into the tangential releasing movement of the
breech bolt catch, further stating that there are many secondary
mechanism designs capable of bringing this mechanical concept to a
reality, but because they all accomplish the same task, they are
all to be considered claimed herein.
41. The TLR system of claim 40 which: when utilized by a fully
automatic closed bolt firing firearm, will enable a firearm to fire
from either its breech bolt open or its breech bolt closed
position.
42. In a closed bolt firing delayed blowback automatic firearm
having a reciprocating telescopic breech bolt with firing pin
therein, a barrel, a frame and a firing hammer; an invention;
comprising (A) A breech bolt; having (i) an L-shape (ii) a lug
which projects downward (iii) a window (iv) a slot; (B) A barrel;
that is (i) configured to serve as a stressed member of the frame;
the barrel having (ii) a step (iii) a recess; (C) A breech bolt
retaining hood; that is (i) configured to guide the action of the
reciprocating telescopic breech bolt; the breech bolt retaining
hood having (ii) an inverted U-shape (iii) a front wall; (D)
Machine screws; (E) A tension spring; (F) A cross pin; (G) Two
locking balls; (H) A compression spring; (I) A bullet wedge; that
is loaded forward by (H); (J) A wedge retaining pin; (K) A manual
operating handle; that is (i) blade-like; having (ii) a slot in
front end (iii) a keyhole slot in the rear end (iv) two grip pads;
(L) A rotating lockshaft; having (i) a thumb operated wheel (ii)
status symbols (iii) flats notched 180 degrees apart (iv) a
circumferential groove; (M) A compression spring; (N) A firing pin;
that is loaded rearward by (M); the firing pin having (i) a notch
(O) A compression spring; (P) A detent pin; that is loaded upward
by (O); (Q) A rotating lockshaft retaining pin; in which said
components produce a breech bolt and breech bolt receiver with a
thumb wheel operated rotating safety device; by having (1) said
breech bolt (A) retained to said barrel (B) with said breech bolt
retaining hood (C). (2) said breech bolt retaining hood (C)
fastened to said barrel (B) with said machine screws (D). (3) built
within said breech bolt (A), said components (E, F, G, H, I, J, L,
M, N, O, P and Q). (4) said manual operating handle (K) sandwiched
between said breech bolt (A) and said breech bolt retaining hood
(C). (5) said bullet wedge (I) parting said locking balls (G) so
that said locking balls (G) protrude from said breech bolt (A) so
that one locking ball (G) engages the recess in said breech bolt
retaining hood (C) and one locking ball (G) engages said recess in
said barrel (B), locking said breech bolt (A) in the breech closed
position. (6) said bullet wedge (I) linked to the slot in said
manual operating handle (K) by said wedge retaining pin (J) which
passes through the slot in said breech bolt (A) because said bullet
wedge (I) is inside said breech bolt (A) and said manual operating
handle (K) is outside said breech bolt (A). (7) said rotating
lockshaft (L) positioned so that; (a) said rotating lockshaft's (L)
thumb operated wheel is above said manual operating handle (K). (b)
said rotating lockshaft (L) is through the keyhole slot in said
manual operating handle (K) and further, within said breech bolt
(A) distending the notch in said firing pin (N) thus retaining said
firing pin (N) in the breech bolt (A). (c) flats notched into said
rotating lockshaft (L) are within the notch in said firing pin (N)
and more flats notched into said rotating lockshaft (L) are within
the keyhole slot in said manual operating handle (K). (d) status
symbols on the surface of said rotating lockshaft (L) can be seen
through a window in said breech bolt (A) to indicate said rotating
lockshaft's (L) position. (8) said rotating lockshaft's (L)
circumferential groove distended by said rotating lockshaft
retaining pin (Q) to retain said rotating lockshaft (L) within said
breech bolt (A). (9) said detent pin (P) contact the underside of
said rotating lockshaft's (L) thumb operated wheel. (10) said
tension spring (E) tether from said cross pin (F) to the front wall
of said breech bolt retaining hood (C) so as to load said breech
bolt (A) forward. (11) the step in said barrel (B) and the lug of
said breech bolt (A) proportioned to limit the rearward travel of
said breech bolt (A). (12) the two grip pads of said manual
operating handle (K) at the rear of said breech bolt (A) with the
thumb operated wheel of said rotating lockshaft (L) between the two
grip pads of said manual operating handle (K). (13) said breech
bolt (A); operable (a) when fired, by striking said firing pin (N)
with the firearm's firing hammer causing sufficient rearward force
on said breech bolt (A) to make said locking balls (G) overcome the
load that said bullet wedge (I) exerts on said locking balls (G)
causing said locking balls (G) to retract into said breech bolt (A)
as said breech bolt (A) recoils; this delays the blowback of said
breech bolt (A) a fraction of a second. (b) manually, by gripping
the pads of said manual operating handle (K) and drawing rearward,
said wedge retaining pin (J) as well as said bullet wedge (I) are
also drawn rearward overcoming said compression spring (H) that
loads said bullet wedge (I) at which point said locking balls (G)
retract into said breech bolt (A) and said breech bolt (A) is drawn
rearward overcoming said breech bolt's (A) tension spring (E). (14)
said rotating lockshaft (L); operable (a) by turning said thumb
wheel with any finger. (b) to change from lock to unlock or unlock
to lock position by advancing its rotation 90 degrees in either
direction by having two lock and two unlock positons per each 360
degrees of rotation (c) when rotated, to change, the revolutionary
location of flats notched into the rotating lockshaft (L) and
therefore whether or not the flats notched into the rotating
lockshaft (L) encounter the notch in the firing pin (N) and the
heyhole slot in the the manual operating handle (K).
43.(new) A firearm comprising: a barrel and an L-shaped breech
block; a breech bolt hood located above said barrel and at least
partially enclosing the breech block; an operating handle
sandwiched between the breech block and the breech bolt hood when
in a first locked position and located rearward of the of the
breech bolt hood when in a second unlocked position; a firing pin
spring biased in the L-shaped breech block; a locking means to lock
the breech block in a closed position; a rotating lockshaft located
in an opening in the breech block wherein the rotating lockshaft
blocks motion of the operating handle and the firing pin when in a
locked position and permits motion of the operating handle and the
firing pin when in an unlocked position.
44.(new) A firearm of claim 43 wherein; the locking means comprises
locking balls located in apertures of the L-shaped breech
block.
45.(new) A firearm of claim 43 wherein; the rotating lockshaft is
attached to a thumbwheel which is manually operated and responsible
for determining the position of the rotating lockshaft.
46.(new) A firearm of claim 45 wherein; a detent pin interacts with
the thumbwheel to limit movement of the thumbwheel.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] Automatic Firearms
[0002] Telescoping Firearm Breech Bolts
[0003] Firearm Breech Bolt Lock-back Mechanisms
[0004] Firearm Safety Devices
[0005] Handgun Firearm Fabrication Methods
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
[0006] Not Applicable
REFERENCE TO A MICROFICHE APPENDIX
[0007] Not Applicable
BACKGROUND OF THE INVENTION
[0008] This new automatic handgun firearm like previous firearms
was designed combining as many desirable qualities into one unit as
possible. Firearm designers strive for a firearm that reloads fast
and has the largest magazine capacity possible. It must perform
flawlessly under the most severe weather conditions. It must be
accurate and be weighted and balanced so that it feels completely
natural when held.
[0009] The mistake firearm designers have made in the past was not
putting enough emphasis on safety and many children have paid for
this mistake with their lives.
[0010] This new firearm was designed with child safety as its first
consideration, but, because of the invention of several new
devices, no desirable qualities were sacrificed for safety
sake.
[0011] This firearm is the bearer of three new firearm systems
which makes it more reliable and reloads faster than other
automatic firearms and it has a component which detaches to
completely disable it.
BRIEF SUMMARY OF THE INVENTION
[0012] This automatic handgun firearm invention is broken into four
fields of invention. The first three are-new firearm operating
systems that are brought together into one firearm. This combining
of systems into a single firearm is the fourth.
[0013] The new systems are the Trigger Operated Breech Bolt
Lockback Releasing System, the Spinning Lock Breech Bolt and Breech
Bolt Receiver System and the Detachable Firing Assembly.
[0014] The Trigger Operated Breech Bolt Lockback Releasing (TLR)
system is simply a mechanism which links an automatic firearms
firing trigger to its breech bolt catch so that the firing trigger
will secondarily supply the mechanical action by which the firearms
breech bolt catch can be released and thus, when reloading, the
firearms breech bolt will close the breech, to chamber the first
round of a fresh magazine by simply squeezing the firing trigger,
rather than fumbling for a separate catch mechanism like a thumb
operated catch which is the standard device used by todays
automatic pistols.
[0015] This system should be used in conjunction with an index
finger operated magazine catch because this will insure that the
index finger is taken off the firing trigger when the firearms
empty magazine is removed and thus the breech is unlikely to be
accidentally closed before a full magazine can be inserted into the
firearms magazine well.
[0016] When this device is used by a semi-automatic firearm, the
first squeeze of the trigger will close the breech, if open, any
additional squeezes will, each, discharge a single round.
[0017] When this device is used by a fully automatic firearm, one
squeeze of the trigger will close the breech, at which point the
firearm will begin firing continuously until the trigger is
released, therefore, a fully automatic firearm which normally fires
in the closed bolt position, will also fire from its open bolt
position.
[0018] The Spinning-Lock Breech Bolt and Breech Bolt Receiver (SLR)
system is named after its new type of safety system, although this
breech bolt and its receiver are also new in design.
[0019] The breech bolt is the key element of this system as all
other components of this system were designed to accompany the
breech bolt.
[0020] This new telescoping L-shaped breech bolt differs when
compared to previous sub-machine gun L-shaped breech bolts in that
its recoil limit is established by a mechanical interaction with a
firearms barrel rather than a stop bumper behind the breech bolt,
which negates the need for any portion of a breech bolt receiver to
be rearward of the firearms barrel and the breech bolt is simply
retained to the firearms barrel with a mailbox-like hood. An action
spring inside the breech bolt loads it forward to the breech closed
position.
[0021] This breech forward receiver design allows the breech bolt
to open and close the breech in full view and even when this breech
bolt is in the closed position, the barrel throat can be seen
through the shell headspace gap, which is a space between the
breech bolt and the rear end of the barrel, from either side. The
gleaming brass of a chambered round shows up like a red light in
this firearm and thus there is never any question of whether or not
it is loaded.
[0022] All components of the spinning lock mechanism are retained
to the breech bolt and they act in the following ways. Locking
balls protrude from the inside of the breech bolt as they are
parted by a spring loaded wedge so that they will engage recesses
in the receiver to lock the breech bolt in the breech closed
position, when fired, the balls retract, from the forces of
detonation, allowing the bolt to recoil and reload. The wedge is
linked to the breech bolts manual operating handle so that it
unlocks the breech as well as operates the breech bolt manually. A
rotating, notched shaft locks the manual operating handle to, and
releases it from, the breech bolt thus allowing or disallowing the
manual operating handles independent movement from the breech bolt,
required to unlock the breech. This same rotating lockshaft, which
locks and unlocks the operating handle, simultaneously locks and
unlocks the firing pin which is also contained inside the breech
bolt. The lockshaft is operated by a well hidden thumb wheel.
[0023] Locking the operating handle, which in turn locks breech
bolt, prevents the firearm from being loaded by someone who should
not be fooling with it.
[0024] Locking of the firing pin acts as a safety device for
someone who is familiar with the firearm and wants to prevent the
accidental discharge of a chambered round.
[0025] No trajectory sighting system is claimed in the patent
application noting that the breech bolt hood provides a very rigid
mounting surface for whatever sights are chosen by the firearms
owner.
[0026] The ejection components are of a generic nature and none are
claimed in this patent application.
[0027] This new Detachable Firing Assembly is exactly that but,
differs from previously used detachable firing assemblies in that
it is retained to the firearm without separate fasteners and can be
removed or installed instantly which makes this the ultimate child
safety device because now we have a two piece firearm. This firing
assembly can be kept someplace other than on the firearm, such as
on the owners keychain. By using the horn of a firearms detachable
cartridge magazine as a tool for removing a firing assembly, we
negate the need for a separate tool, although, any blade-like
object such as screwdriver, knife or even a coin will do the
job.
[0028] The new handgun Gripframe which combines these systems into
a single firearm, is fabricated from sheet metal rather than a
forging due to the fact that the Detachable Firing Assembly houses
the components that were previously built into the rear area of the
gripframe and in order for the gripframe to house the Trigger
Operated Breech Bolt Lock-back Releasing System it must be hollow
in the area above the firing trigger. Because of these reasons it
is simpler and less expensive to fabricate the gripframe by joining
two side plates with cross members.
[0029] The barrel of the Spinning Lock Breech Bolt and Breech Bolt
Receiver System sits on top of two plates and is joined to them and
thus the barrel itself is part of the gripframe as this joint is
the anchoring point for the entire Spinning Lock Breech Bolt and
Breech Bolt Receiver System. This fixed barrel design provides for
great accuracy. An ejector stud affixed to the gripframe behind the
barrel works in conjunction with whatever type of extractor hook is
fitted to the breech bolt.
BRIEF DESCRIPTION OF SEVERAL VIEWS OF THE DRAWINGS
[0030] Note that, hatching, which inclines to the right, indicates
components of the frame. Hatching, which inclines to the left,
indicates moving components.
[0031] All moving parts act on a plane formed by length and height,
the third dimension of depth is therefore only shown where
necessary.
[0032] FIG. 1 is a left side cut-away view of the complete firearm
with all of its components illustrated as showing their location
and relationship to each other while the breech bolt is locked in
its closed position.
[0033] FIG. 2 is a left side cut-away view of the firearm
gripframes extreme rear end only, shown with the Detachable Firing
Assembly detached from it.
[0034] FIG. 3 is a left side cut-away view of the SLR system only
with its components illustrated as showing their location and
relationship to each other while the breech bolt is in its open
position.
[0035] FIG. 4 is a cross sectional view taken from FIG. 3 along the
line 2--2 altered to illustrate the rotating lockshaft locking the
firing pin.
[0036] FIG. 5 is a cross sectional view taken from FIG. 3 along the
line 2--2 altered to illustrate the rotating lockshaft while
unlocked and firing pins position when struck.
[0037] FIG. 6 is a portion of the cross sectional view taken from
FIG. 1 along the line 1--1 illustrating the rotating lockshaft
locking the breech bolt manual operating handle.
[0038] FIG. 7 is a portion of the cross sectional view taken from
FIG. 3 along the line 1--1 illustrating the rotating lockshaft
while unlocked and the breech bolt manual operating handle while
drawn.
[0039] FIG. 8 is a left side view of the TLR system's constituents
in mechanism at the moment the breech bolt catch engages the breech
bolt while the firing trigger is depressed.
[0040] FIG. 9 is a left side view of the TLR system's constituents
in mechanism showing the cam following levers secondary action as
the firing trigger is released thus moving the sliding cam
forward.
[0041] FIG. 10 is a left side view of the TLR system's constituents
in mechanism while the breech bolt catch is engaged and the firing
trigger has reset.
[0042] FIG. 11 is a left side view of the TLR system's constituents
in mechanism at the moment the breech bolt catch is disengaged by
the rearward motion of the sliding cam.
[0043] FIG. 12 is a top view provided to show the lateral
orientation of the TLR systems components.
[0044] FIG. 13 is an exploded rear perspective of the gripframes
components.
[0045] FIG. 14 is a rear perspective view of the gripframe.
DETAILED DESCRIPTION OF THE INVENTION
[0046] This patent application has been divided into four sections
because four new and separate devices have been combined into this
single firearm invention.
[0047] The first is a new telescoping breech bolt and breech bolt
receiver system named the Spinning Lock Breech Bolt and Breech Bolt
Receiver System (SLR) referred to in FIGS. 1, 3, 4, 5, 6, 7, 13 and
14.
[0048] In this design the long leg of an L-shaped breech bolt 1
lays on top of a firearm barrel 2 and is retained to it by a breech
bolt hood 3 but not tightly so as to allow the breech bolt 1 to
reciprocate freely. The U-shaped sight mount 39 reinforces the
breech bolt hood 3 as they are welded together.
[0049] A tension spring 4 tethers from the inside front wall of
breech bolt hood 3 to a crosspin 5 inside the breech bolt 1 loading
it forward.
[0050] A lug which projects downward from the underside of the
breech bolts 1 front end interacts with a step in the firearms
barrel 2 to limit the breech bolts 1 rearward motion.
[0051] This breech bolt 1 has a built-in locking system which holds
the breech bolt 1 in its closed and forwardmost position as shown
in FIG. 1. Two locking balls 6, one protruding upward and the other
downward from the breech bolt 1 to engage a recess in the breech
bolt hood 3 and a recess in the barrel 2 while being parted
vertically by a spring loaded bullet wedge 7 that is loaded forward
by a compression spring 8.
[0052] When this firearm is fired, the severe rearward forces of
detonation causes the locking balls 6 to retract into the breech
bolt 1 as the wedge 7 withdraws from them allowing the breech bolt
1 to recoil and reload.
[0053] In order to operate the breech bolt 1 manually the breech
has to be unlocked first as it takes several hundred pounds of
rearward force to operate the breech bolt 1 otherwise.
[0054] A breech bolt manual operating handle 9 is linked to the
bullet wedge 7 by its retaining pin 10 which passes vertically
through a longitudinal slot in the top surface of the breech bolt 1
as the retaining pin 10 distends a longitudinal slot in the manual
operating handle 9 which is blade-like and lays flat on the top of
the breech bolt 1 while being sandwiched against the upper inner
surface of the breech bolt hood 3.
[0055] The rear end of the blade-like manual operating handle 9
laterally joins a right and left side grip pad.
[0056] By gripping the pads, indicated generally as 36, the manual
operating handle 9 can be drawn rearward as well as the bullet
wedge 7 to unlock the breech until the wedge retaining pin 10
reaches the rear end of the slot in the breech bolt 1 at which
point the breech bolt 1 will move rearward with the manual
operating handle 9 until it reaches its recoil limit as shown in
FIG. 3. The breech bolt catch 22 may engage the notch in the breech
bolt 1 while in this position.
[0057] Referring to FIGS. 1, 3, 4, 5, 6 and 7 the Spinning Lock
Safety System is a thumb wheel operated, notched rotating lockshaft
11 which retains to the breech bolt 1, and controls the position
and movement of, the manual operating handle 9 and the breech
bolt's firing pin 12 by passing through a keyhole slot in the rear
end of the manual operating handle 9 and sitting in a vertical bore
in the rear end of the breech bolt 1 while the bottom end of the
rotating lockshaft 11 distends a notch in the firing pin 12 which
is spring loaded rearward by a compression spring 13.
[0058] The detent pin 14 and a compression spring 15 are stacked in
a vertical bore just in front of, and parallel to, the rotating
lockshaft 11 while the detent pin 14 is loaded upward to pass
through the keyhole slot in the manual operating handle 9 and
contacts the underside of the thumb wheel 40 which is affixed to
the top end of the rotating lockshaft 11. The rear end of the
manual operating handle 9 is sandwiched between the lockshafts
thumb wheel 40 and the top surface of the breech bolt 1.
[0059] The rotating lockshaft 11 acts to change the revolutionary
location of flats notched into it and to provide the means by which
the manual operating handle 9 and the firing pin 12 are locked and
unlocked simultaneously as demonstrated by the cross sectional
views of FIGS. 4, 5, 6 and 7 which are taken from FIGS. 1 and 3 at
lines 1--1 and 2--2.
[0060] A pin 16 is press fit into a lateral hole in the breech bolt
1 intersecting the rotating lockshafts bore and distends in a
circumferential groove in the rotating lockshaft 11 so as to retain
it while allowing it to rotate freely in both directions.
[0061] The revolutionary position of the rotating lockshaft 11 and
lock status of SLR system is visually determined by colored status
symbols on the circumferential surface of rotating lockshaft 11
that appear in window(s) in the rear end and (or) both sides of the
breech bolt 1.
[0062] The second, referring to FIGS. 1 and 2, is a Detachable
Firing Assembly Housing 17 which attaches to and detaches from this
firearms gripframe 18 without any separate fasteners, so as to
render this firearm inoperable instantaneously by simply removing
it from the firearm.
[0063] The upper end of the Detachable Firing Assembly Housing 17
is grooved so that it saddles the upper cross member 19 which joins
the side plates of the gripframe 18 at its rear and upper area.
[0064] The lower end of the Detachable Firing Assembly Housing 17
has a spring loaded ballpoint holding pin 21 projecting slightly
from it, downward, which engages a ramp and recess in the lower
cross member 20 which joins the side plates of the gripframe 18 at
its rear and lower area.
[0065] Referring to FIG. 2 the Detachable Firing Assembly Housing
17 is installed into the gripframe 18 by two motions.
[0066] Motion arrow 1 (MA1) shows how the upper end of the housing
17 is put between the side plates of the gripframe 18 and slid
upward until the groove in the housing 17 rests on the upper cross
member 19.
[0067] Motion arrow 2 (MA2) shows how the lower end of the housing
17 drops into the gripframe 18 and the holding pin 21 will retract
as it engages the ramp in the lower cross member 20 until the
housing 17 is fully seated in the gripframe 18 at which point the
holding pin 21 seats in a recess in the lower cross member 20 so as
to hold the housing 17 firmly in the gripframe 18 without fasteners
as shown in FIG. 1. The firing hammers 33 loading spring 34 also
loads the holding pin 21.
[0068] The Detachable Firing Assembly Housing 17 is easily removed
by simply prying the Housing 17 from the gripframe 18 with any
blade-like object as a notch in the rear edge of either of the
gripframe 18 side plates will provide a prying space.
[0069] The third is the Trigger Operated Breech Bolt Lockback
Releasing System whose operation is, and components are, discussed
on a step by step basis as shown by FIGS. 1, 3, 8, 9, 10, 11 and
12.
[0070] Referring to FIG. 12 the breech bolt catch 22 is linked to
the breech bolt catch engaging lever 23 by a machine screw 32.
[0071] Referring to FIG. 8 the breech bolt catch 22 engages the
fully recoiled breech bolt 1 as it, is linked to and, moves upward
with the breech bolt catch engaging lever 23 which hinges on cross
pin 35 and the engaging levers 23 rear end is forced to arc upward
indicated by motion arrow 3 (MA3), by the rising feeder of an empty
cartridge magazine after the last round in the firearm has been
discharged so that the breech bolt 1 is locked in its open position
as shown in FIG. 3. Tension spring 30 loads the cam following lever
24 rearward and tension spring 31 loads the firing trigger 26
forward and the breech bolt catch engaging lever 23 downward.
[0072] Referring to FIG. 9 the cam following lever's 24 secondary
tangential motion allows the breech bolt catch 22 to remain engaged
and escape the forward motion of the sliding cam 25 as the firing
trigger 26 is released and allowed to reset in its normal fashion.
A stud pin 37, which projects from a flat side of the breech bolt
catch engaging lever 23 as well as hinge pin 35 passes through
slots in the blade-like cam following lever 24, to allow the
secondary action, as shown by FIG. 12 also.
[0073] Referring to FIG. 10 the firing trigger 26 has reset fully
while the breech bolt catch 22 still locks the breech bolt 1 in its
open position as the firing triggers 26 forward travel is limited
by a stud pin 38 which projects from the breech bolt catch engaging
lever 23 and while at this position the stud pin 38 engages a notch
in the extension arm of the sliding cam 25 which is affixed to the
trigger 26, and thus locking the breech bolt catch engaging lever
23 up and thus further the breech bolt catch 22 so as to prevent
its accidental disengagment from the breech bolt 1 when the firearm
has been subjected to an accidental shock.
[0074] Referring to FIG. 11 the breech bolt 1 is released by
drawing the firing trigger 26 which also moves the sliding cam 25
rearward to engage the cam following lever 24 forcing both it and
the breech bolt catch engaging lever 23 to arc downward as this
action pulls the breech bolt catch 22 downward disengaging it from
the breech bolt 1 and thus the breech bolts action spring 4 forces
the breech bolt 1 to the closed position as shown in FIG. 1, this
view also shows the firing trigger 26 in its firing position as the
sliding cams 25 extension arm rests on stud pin 38.
[0075] The fourth and last is a Gripframe 18 which is fabricated by
welding sheet metal parts together rather than a one piece forging.
This firearm fabrication method is ideally suited for this firearm
because it has so many internal components and its firing mechanism
is housed by a removable forging.
[0076] Referring to FIGS. 13 and 14 the right 27 and the left frame
plate 28 are joined by a flange projecting from each plate, towards
each other, to form the front wall of the magazine well. The
extreme rear end of the right 27 and the left frame plate 28 are
joined at the top by a round cross member 19 and at the bottom by a
rectangular cross member 20. The trigger guard 29 is an L-shaped
bar which joins the nose of the right 27 and left frame plate 28
and also joins the plates just below the trigger area. The most
unique feature of this firearm gripframe 18 is that the barrel 2
acts as stressed member in the gripframe 18 by joining the right 27
and left frame plate 28 at the upper front area of the gripframe
18.
* * * * *