Patent US4136475A successfully refreshed from Google Patents.
US4136475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety device for firearms
Assignee: Individual
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Filing: 1977-05-26
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Granted: 1979-01-30
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Expires: 1997-05-26
Abstract
Abstract The invention provides a safety device for firearms wherein a key operated lock actuates a locking pin to lock the firing mechanism. The locking pin is controlled by a rack and pinion gearing linkage which moves the locking pin to alternately engage or disengage a trigger seat.
Inventors
- 👤 Edward E. Centille
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:49
CPC Classifications
F; F41; F41A; F41A17/00; F41A17/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
149 words
A locking mechanism for firearms comprising a firing mechanism, an opening extending into the firearm and in communication with a seat of a trigger of the firing mechanism, a key operable lock installed in the opening, the lock having a key plug in rotatable communication with a rack and pinion gear linkage activating member, a locking pin mounted for movement in unison with the rack of the rack and pinion gear linkage and in slidable engagement with the trigger seat, the pinion gear mounted for rotation on a shaft which is in rotatable communication with the key plug, the locking pin in slidable engagement with a recess in the trigger seat, a spring spiraled about the locking pin and in operative relation to both the trigger seat and the rack, the locking pin selectively locking and unlocking the trigger seat in response to the operation of the key lock.
Claim 2
Dependent Claim
149 words
A locking mechanism for firearms comprising a firing mechanism, an opening extending into the firearm and in communication with a seat of a trigger of the firing mechanism, a key operable lock installed in the opening, the lock having a key plug in rotatable communication with a rack and pinion gear linkage activating member, a locking pin mounted for movement in unison with the rack of the rack and pinion gear linkage and in slidable engagement with the trigger seat, the pinion gear mounted for rotation on a shaft which is in rotatable communication with the key plug, the locking pin in slidable engagement with a recess in the trigger seat, a spring spiraled about the locking pin and in operative relation to both the trigger seat and the rack, the locking pin selectively locking and unlocking the trigger seat in response to the operation of the key lock.
Claim 3
Dependent Claim
12 words
The locking mechanism according to claim 1 wherein the lock is cylindrical.
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) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |