Patent US4422254A successfully refreshed from Google Patents.
US4422254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety mechanism for firearms
Assignee: SIR SIDNEY'S SIDEARM SALES Inc 414 COORS BLVD SW ALBUQUERQUE NEW MEXICO 87105 A CORP OF NEW MEXICO
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Filing: 1982-02-08
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Granted: 1983-12-27
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Expires: 2002-02-08
Abstract
Abstract A safety mechanism for firearms having a sear pivoting in front of a trigger, wherein the safety mechanism consists of a safety shaft which is rotatably installed transversely to the axis of the barrel; said safety shaft providing positive safe and fire positions by blocking or freeing sear movement; and said safety mechanism also consisting of a safety channel which is affixed to the safety shaft, said safety channel acting as the positioning lever for the safety shaft; and said safety channel being a visible indicator of the position of the safety channel as well as a dust cover and said safety channel blocking access to the trigger when in the safe position; and wherein the safety mechanism can be positioned in the firing mode, and access to the trigger provided by one motion of the safety channel unilaterally with intentionally positioning the trigger finger on the trigger ready to fire.
Inventors
- 👤 Sidney J. McQueen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:25
CPC Classifications
F; F41; F41A; F41A17/00; F41A17/46; F41A17/56
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
213 words
A safety mechanism for firearms having a pivoting sear, said sear being forward of a trigger, said safety mechanism comprising: a safety shaft having a safety flat, said safety shaft being rotatably installed through safety holes in side plates of the firearm, said safety holes being adjacent to a safety end of the sear; and said safety shaft having on each end an ear, said ear being essentially flat, and the plane of each ear being perpendicular to the plane of the safety flat; and a safety channel having a back and two runners, a mounting end and a free end, and said safety channel having horizontal slots in the runners at the mounting end, said horizontal slots being sized to mate with the ears, and said safety channel having a trigger clearance slot in its back, and said safety channel having finger tabs on the runners at the free end to permit one-motion-movement of the safety channel and insertion of a trigger finger to the trigger, and said runners having a design and shape so that they will block access to the trigger; and wherein the safety channel is mated to the safety shaft so that when the mechanism is in the safe position, the safety flat blocks movement of the sear.
Claim 2
Dependent Claim
213 words
A safety mechanism for firearms having a pivoting sear, said sear being forward of a trigger, said safety mechanism comprising: a safety shaft having a safety flat, said safety shaft being rotatably installed through safety holes in side plates of the firearm, said safety holes being adjacent to a safety end of the sear; and said safety shaft having on each end an ear, said ear being essentially flat, and the plane of each ear being perpendicular to the plane of the safety flat; and a safety channel having a back and two runners, a mounting end and a free end, and said safety channel having horizontal slots in the runners at the mounting end, said horizontal slots being sized to mate with the ears, and said safety channel having a trigger clearance slot in its back, and said safety channel having finger tabs on the runners at the free end to permit one-motion-movement of the safety channel and insertion of a trigger finger to the trigger, and said runners having a design and shape so that they will block access to the trigger; and wherein the safety channel is mated to the safety shaft so that when the mechanism is in the safe position, the safety flat blocks movement of the sear.
Claim 3
Dependent Claim
68 words
The safety mechanism of claim 1 wherein the safety shaft has two cylindrical sections, and wherein each of the side plates of the weapon have a positioning bore, and wherein a positioning means is installed in the positioning bore, and each cylindrical section of the safety shaft has two positioning detents, wherein the positioning means function with the detents to bias the safety mechanism in a selected position.
Claim 4
Dependent Claim
68 words
The safety mechanism of claim 2 wherein the detents are hemispherical, and the positioning means comprises biasing springs and spherical positioning balls, and wherein one detent on each cylindrical section is centered on a radius of the safety shaft perpendicular to the safety flat, and the other detent on each cylindrical section is centered on a radius of the safety shaft approximately five degrees from the safe position.
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) | 1986-12-26 | 1987-06-27 | 1987-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-26 | 1991-06-27 | 1991-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-26 | 1995-06-27 | 1995-12-27 | $7700.00 | Window Closed / Lapsed |