Patent US3765115A successfully refreshed from Google Patents.
US3765115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety lock for breech opening for firearms
Assignee: Foerenade Fabriksverken AB
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Filing: 1972-03-27
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Granted: 1973-10-16
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Expires: 1992-03-27
Abstract
Abstract Safety lock for insertion into the breech opening of a firearm comprising a lock member rotatably connected to a cylinder member, the lock member being received in the chamber of the breech block and rotated therein to a locked position by a key inserted into the cylinder member.
Inventors
- 👤 L Johansson
- 👤 S Andersson
- 👤 J Eliasson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:45
CPC Classifications
F; F41; F41A; F41A17/00; F41A17/44
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
131 words
A safety lock for insertion into a breech opening of a breech loading firearm having a breech receiver and a barrel and an annular chamber defined by a breech block and the rear surface of the barrel, comprising: a. a lock member rotatably connected to a cylinder member; b. said members having a cross section corresponding substantially to the cross sectional configuration of the breech opening to permit insertion of said members into said breech opening and reception of said lock member into said annular chamber; c. said lock member having a socket and said cylinder member having a portion of reduced diameter inserted into and pivoted in said socket to permit rotation of said lock member in the annular chamber into a locked position upon turning of said cylinder member.
Claim 2
Dependent Claim
131 words
A safety lock for insertion into a breech opening of a breech loading firearm having a breech receiver and a barrel and an annular chamber defined by a breech block and the rear surface of the barrel, comprising: a. a lock member rotatably connected to a cylinder member; b. said members having a cross section corresponding substantially to the cross sectional configuration of the breech opening to permit insertion of said members into said breech opening and reception of said lock member into said annular chamber; c. said lock member having a socket and said cylinder member having a portion of reduced diameter inserted into and pivoted in said socket to permit rotation of said lock member in the annular chamber into a locked position upon turning of said cylinder member.
Claim 3
Dependent Claim
36 words
A safety lock according to claim 1, in which said cylinder member is provided with a shoulder and said breech block has an abutment surface engaging said shoulder for limiting the inserting movement of the lock.
Claim 4
Dependent Claim
25 words
A safety lock according to claim 2, in which the lock member is rotated into locked position by a key inserted into said cylinder member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |