US3673725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tamper-proof lock for small arms
Assignee: Individual
•
Filing: 1970-10-23
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Granted: 1972-07-04
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Expires: 1990-10-23
Abstract
Abstract A safety lock for small arms, said lock preventing opening, breaking, loading or discharge of the piece. The lock comprises a pin mounted in a selected portion of the small arm. The pin is axially advanceable and retractable by means of a separate externally applied key which at all times is retained by the owner. The pin, when in one of its extreme positions, engages a portion of the conventional small arms mechanism to lock the gun against firing, loading or even opening of the action. The gun is, therefore, rendered ''''tamper-proof'''' until application of the appropriate key.
Inventors
- 👤 James A Cravener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:04
CPC Classifications
F; F41; F41A; F41A17/00; F41A17/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
189 words
A tamper-proof lock for small arms of the type having an action which, upon actuation, ejects a spent shell, cocks a hammer and conditions the piece for firing, said action having relatively stationary frame portions supporting movable parts of the action, the improvement comprising: a lock body portion mounted on at least one of said relatively stationary frame portions, said body portion having an upright bore extending therethrough, a member mounted in said bore for axial movement therethrough, means on said member cooperating with means in said body portion to secure said member in a locking position, a compression spring in said bore in said body portion, said spring bearing at one end on said member and at the other end on said lock body, one end of said member, in one extreme position, engaging a selected movable part of the action substantially to lock the entire action, and in the opposite extreme position unlocking the same; said member having formed at its opposite end a coded formation to engage a specialized, externally applied key for moving said member from locked to unlocked and from unlocked to locked positions.
Claim 2
Dependent Claim
189 words
A tamper-proof lock for small arms of the type having an action which, upon actuation, ejects a spent shell, cocks a hammer and conditions the piece for firing, said action having relatively stationary frame portions supporting movable parts of the action, the improvement comprising: a lock body portion mounted on at least one of said relatively stationary frame portions, said body portion having an upright bore extending therethrough, a member mounted in said bore for axial movement therethrough, means on said member cooperating with means in said body portion to secure said member in a locking position, a compression spring in said bore in said body portion, said spring bearing at one end on said member and at the other end on said lock body, one end of said member, in one extreme position, engaging a selected movable part of the action substantially to lock the entire action, and in the opposite extreme position unlocking the same; said member having formed at its opposite end a coded formation to engage a specialized, externally applied key for moving said member from locked to unlocked and from unlocked to locked positions.
Claim 3
Dependent Claim
26 words
The device of claim 1, in which said body portion has a radially outwardly projecting head at one end and external threads at the other end.
Claim 4
Dependent Claim
25 words
The device of claim 1, in which the action-engaging end of said member comprises a pin of less diameter than the remainder of said member.
Claim 5
Dependent Claim
23 words
The device of claim 1, including internal means in said body portion for blocking full passage of said member through said body portion.
Claim 6
Dependent Claim
24 words
The device of claim 1, including means adjacent one end of said body portion for blocking withdrawal of said member from said body portion.
Claim 7
Dependent Claim
50 words
The device of claim 1, wherein the means on said member cooperates with the means on said body portion for securing said member in closed position includes internal threads in the upright bore and cooperating external threads on said member to permit said member to be threaded into said bore.
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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |