Patent US3701213A successfully refreshed from Google Patents.
US3701213A
Expired / Lapsed
US
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Revolver firing mechanism with single action and double action movement
Assignee: Colt Industries Inc
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Filing: 1969-03-18
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Granted: 1972-10-31
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Expires: 1989-03-18
Abstract
Abstract A firing mechanism incorporating an improved sear nose on a trigger providing both single and double action movements, a single leaf spring positioning both a hand and a connector during such movements, a detachable sideplate having a recess providing a connector guide surface, and a depressible hammer strut having an integral hub bearing portion pivotally supported in captured relation to the hammer. A multi-function fastener arrangement removably secures the sideplate to the frame and provides for locating stocks in relation to the frame before attachment, as well as maintaining them against unintended displacement relative to the frame after attachment.
Inventors
- 👤 Karl R Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:34
CPC Classifications
F; F41; F41A; F41A19/00; F41A19/06; F41A19/42; F41A19/52; F41A19/53; F41C; F41C3/00; F41C3/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
155 words
A handgun firing mechanism comprising a frame, a hammer in the frame movable between fired position and cocked position by both single action movement and by double action movement and biased toward its fired position, the hammer having a single action hammer sear and a double action hammer sear, and sear means supported for movement about a pivot axis in the frame, the sear means having a portion of reduced axial thickness providing a pair of contoured engagement shoulders in offset relation to one another in a direction parallel to said pivot axis, the shoulders defining a single action sear portion and a double action sear portion respectively engageable during single action and double action movements with the single action hammer sear and the double action hammer sear when the hammer is in cocked position for holding the hammer therein before it is released to move under the action of its bias to fired position.
Claim 2
Dependent Claim
155 words
A handgun firing mechanism comprising a frame, a hammer in the frame movable between fired position and cocked position by both single action movement and by double action movement and biased toward its fired position, the hammer having a single action hammer sear and a double action hammer sear, and sear means supported for movement about a pivot axis in the frame, the sear means having a portion of reduced axial thickness providing a pair of contoured engagement shoulders in offset relation to one another in a direction parallel to said pivot axis, the shoulders defining a single action sear portion and a double action sear portion respectively engageable during single action and double action movements with the single action hammer sear and the double action hammer sear when the hammer is in cocked position for holding the hammer therein before it is released to move under the action of its bias to fired position.
Claim 3
Dependent Claim
29 words
The firing mechanism of claim 1 further including a trigger supported for pivotal movement in the frame, the sear means being formed as an integral part of the trigger.
Claim 4
Dependent Claim
48 words
The firing mechanism of claim 1 wherein the double action hammer sear is a spring biased depressible strut pivotally supported on the hammer and having an integral hub bearing portion, the hammer having a recess therein receiving the hub bearing portion of the strut for captured pivotal movement.
Claim 5
Dependent Claim
78 words
The firing mechanism of claim 1 further including a firing pin mounted in the frame, a chambered cylinder rotatably supported in the frame, a hand for moving the cylinder into aligned position aligning a cylinder chamber with the firing pin, a connector for connecting the hammer with the firing pin when the hammer is released from cocked position, and a spring between the hand and the connector and continuously urging them respectively toward and away from the cylinder.
Claim 6
Dependent Claim
62 words
The firing mechanism of claim 4 wherein a trigger is supported for pivotal movement in the frame, wherein both the hand and the connector are pivotally supported for movement on the trigger, and wherein the spring is a generally flat leaf spring carried by one of the hand and connector elements and continuously urging them respectively toward and away from the cylinder.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |