US4156980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breech opening apparatus for handgun
Assignee: Individual
•
Filing: 1978-01-20
•
Granted: 1979-06-05
•
Expires: 1998-01-20
Abstract
Abstract In a handgun having a spring biased breech locking mechanism and pistol grip handle, a breech release device mounted at the butt of the pistol grip handle to provide breech release access without disturbing the grip of the shooter's hand grasp. The device includes a base member which is fixed within the handle to the handgun receiver. Linkage means are attached at the remote end of said base member to permit coupling thereto of a lever means located at the butt of the handle. A connecting rod extends from a remote end of the lever means and engages the breech locking mechanism of the handgun. Contact between the connecting rod end and breech locking mechanism is maintained by the spring biasing force applied to the breech locking mechanism. By displacing the lever means, the connecting rod is extended and disengages the spring biased breech locking mechanism.
Inventors
- 👤 John E. Aspenwall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:27
CPC Classifications
F; F41; F41A; F41A3/00; F41A3/58
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
130 words
In a handgun having a spring biased breech locking mechanism, breech, receiver and pistol grip handle, the improvement comprising a butt-mounted release lever assembly including: a. a base member positioned at the butt of said handle; b. linkage means attached to the base member near the butt location of said handle; c. lever means having a first pivotal point of attachment for coupling to said linkage means intermediate to the length of said lever means; d. a connecting rod having means for attachment at one end thereof to said lever means, the other end of said rod being engaged in contact with said spring biased breech locking mechanism at a contact point such that displacement of said lever extends the connecting rod and breech locking mechanism, thereby releasing said breech.
Claim 2
Dependent Claim
130 words
In a handgun having a spring biased breech locking mechanism, breech, receiver and pistol grip handle, the improvement comprising a butt-mounted release lever assembly including: a. a base member positioned at the butt of said handle; b. linkage means attached to the base member near the butt location of said handle; c. lever means having a first pivotal point of attachment for coupling to said linkage means intermediate to the length of said lever means; d. a connecting rod having means for attachment at one end thereof to said lever means, the other end of said rod being engaged in contact with said spring biased breech locking mechanism at a contact point such that displacement of said lever extends the connecting rod and breech locking mechanism, thereby releasing said breech.
Claim 3
Dependent Claim
49 words
An improved release lever assembly as defined in claim 1, wherein the base member includes a stabilizing post connected to the receiver of said handgun and extending to the butt location of said handle, said linkage means being attached at a remote end of said post from said receiver.
Claim 4
Dependent Claim
50 words
An improved release lever assembly as defined in claim 1, wherein said connecting rod is attached at an end of said lever means and said first pivotal point of attachment with said linkage means is located in the same half section of the lever means as said lever means end.
Claim 5
Dependent Claim
86 words
An improved release lever assembly as defined in claim 1, wherein the spring biased release mechanism includes a depressible trigger guard assembly which partially rotates into the receiver of the handgun, pivoting about a fixed axis of rotation located at a forward section of said trigger guard assembly, the engaging contact point between said spring biased breech locking mechanism and said connecting rod being located at a lower, rearward section of said trigger guard assembly which is at least partially concealed by said pistol grip handle.
Claim 6
Dependent Claim
32 words
An improved release lever assembly as defined in claim 4, wherein said contact point on said trigger guard assembly comprises a recessed contact area for receiving the end of said connecting rod.
References Cited (Backward Citations)
US1507411A
Cited
US3561149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-06-04 | 1982-12-04 | 1983-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-04 | 1986-12-04 | 1987-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-04 | 1990-12-04 | 1991-06-05 | $7700.00 | Window Closed / Lapsed |