Patent JPS5832207A successfully refreshed from Google Patents.
Patent US3857322A successfully refreshed from Google Patents.
US3857322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Firearm
Assignee: Individual
•
Filing: 1973-12-10
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Granted: 1974-12-31
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Expires: 1993-12-10
Abstract
Abstract A pistol adapted to provide selective double action is described. The pistol comprises a slide mounted on a frame which houses the barrel and the firing mechanism. The firearm can be field-stripped quickly and the low position of the barrel reduces the effect of recoil on firing accuracy. The firing mechanism comprises a number of parts disposed in a multi-layered arrangement which reduces the overall size of the pistol.
Inventors
- 👤 P Lichtman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:45
CPC Classifications
F; F41; F41A; F41A17/00; F41A17/42; F41A11/00; F41A17/74; F41A19/00; F41A19/06; F41A19/42; F41A19/43; F41A19/47; F41A19/48; F41A3/00; F41A3/64; F41A3/78; F41A3/82
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
209 words
A firearm comprising: a frame; a hammer in said frame pivotable between cocked and firing positions; a spring mounted in said frame for urging said hammer to its firing position; a sear movable to a position to hold the hammer cocked and to another position to release the cocked hammer so that the hammer can fire the firearm; a movable sear drawbar having sear-engaging means for engaging the sear and moving it to hammer-releasing position; a movable hammer drawbar having cocking means operative during double action for moving said hammer for firing position to cocked position and thereafter releasing said hammer so that said hammer can fire said firearm; a trigger movably mounted to said frame; a pivoting lever pivotally mounted to said frame and pivotally connected to said sear drawbar and said hammer drawbar; and means pivotally connecting said pivoting lever to said trigger, said pivoting lever being arranged so that when said trigger is pulled said pivoting lever will (a) cause said sear drawbar during single action to move said sear to hammer releasing position and (b) cause said hammer drawbar during double action to move said hammer from firing position to cocked position and thereafter to release said hammer so Said hammer can fire said firearm.
Claim 2
Dependent Claim
209 words
A firearm comprising: a frame; a hammer in said frame pivotable between cocked and firing positions; a spring mounted in said frame for urging said hammer to its firing position; a sear movable to a position to hold the hammer cocked and to another position to release the cocked hammer so that the hammer can fire the firearm; a movable sear drawbar having sear-engaging means for engaging the sear and moving it to hammer-releasing position; a movable hammer drawbar having cocking means operative during double action for moving said hammer for firing position to cocked position and thereafter releasing said hammer so that said hammer can fire said firearm; a trigger movably mounted to said frame; a pivoting lever pivotally mounted to said frame and pivotally connected to said sear drawbar and said hammer drawbar; and means pivotally connecting said pivoting lever to said trigger, said pivoting lever being arranged so that when said trigger is pulled said pivoting lever will (a) cause said sear drawbar during single action to move said sear to hammer releasing position and (b) cause said hammer drawbar during double action to move said hammer from firing position to cocked position and thereafter to release said hammer so Said hammer can fire said firearm.
Claim 3
Dependent Claim
27 words
A firearm according to claim 1 wherein said sear drawbar and said hammer drawbar are pivotally connected to said pivoting lever by a ball and socket connection.
Claim 4
Dependent Claim
30 words
A firearm according to claim 1 wherein said hammer is disposed in a first plane and said sear and hammer drawbars are disposed in second and third parallel planes respectively.
Claim 5
Dependent Claim
25 words
A firearm according to claim 3 wherein said sear is disposed in said first plane and said sear engaging means extends into said first plane.
Claim 6
Dependent Claim
42 words
A firearm according to claim 3 wherein said frame has first and second spaced side walls with said hammer located between said side walls, and said sear and hammer drawbars are disposed on the outer side of one of said side walls.
Claim 7
Dependent Claim
29 words
A firearm according to claim 5 wherein said sear is disposed between said side walls and is pivotally mounted to said frame below the pivot point of said hammer.
Claim 8
Dependent Claim
26 words
A firearm according to claim 6 wherein a portion of said sear drawbar extends between said one side wall and a portion of said hammer drawbar.
Claim 9
Dependent Claim
27 words
A firearm according to claim 5 wherein said one sidewall has a shallow recess and said sear drawbar and said pivoting lever are disposed in said recess.
Claim 10
Dependent Claim
38 words
A firearm according to claim 8 wherein said frame has a handle portion and a grip cover plate secured to said handle portion and covering said recess and the sear drawbar and pivoting lever disposed in said recess.
Claim 11
Dependent Claim
61 words
A firearm according to claim 9 wherein a portion of said sear drawbar extends between said one side wall and a portion of said drawbar, and further wherein said grip cover has an inner surface that is spaced from said one side wall and coacts therewith to define an enclosed space which is at least partly occupied by said hammer drawback.
Claim 12
Dependent Claim
25 words
A firearm according to claim 1 wherein said trigger is mounted for rectilinear movement relative to said frame and further including means biasing said trigger
Claim 13
Dependent Claim
25 words
A firearm according to claim 1 including a disconnector for moving the sear drawbar so that it cannot move the sear to hammer releasing position.
Claim 14
Dependent Claim
33 words
A firearm according to claim 12 further including a slide reciprocally mounted to said frame, and means on said slide for operating said disconnector when said slide is moved rearwardly on said frame.
Claim 15
Dependent Claim
28 words
A firearm according to claim 13 wherein said slide includes a cam surface for engaging and cocking said hammer when said slide is moved rearwardly on said frame.
Claim 16
Dependent Claim
47 words
A firearm according to claim 13 wherein said disconnector comprises a bar reciprocally mounted to said frame, and said slide includes means for camming said bar in a direction to move said sear drawbar away from said sear during rearward motion of said slide on said frame.
Claim 17
Dependent Claim
75 words
A firearm according to claim 1 wherein said frame includes a barrel and a chamber for receiving a cartridge to be fired, and further including a slide reciprocally mounted to said frame and a recoil spring disposed in said slide above said barrel, one end of said spring being engaged with means on said slide and the opposite end of said spring being engaged with a portion of said frame that extends into said slide.
Claim 18
Dependent Claim
84 words
A firearm according to claim 16 further including a firing pin reciprocally mounted in said slide rearwardly of said chamber, means on said slide for restricting movement of said firing pin between a first retracted position in which one end of said firing pin is disposed for engagement by said hammer and a second extended position in which the opposite end of said firing pin engages a cartridge residing in said chamber, and spring means normally holding said firing pin said first retracted position.
Claim 19
Dependent Claim
42 words
A firearm according to claim 17 including a cartridge ejection opening in said frame, and means in said slide for ejecting a spent cartridge case from said pistol via said ejection opening on rearward movement of said slide relative to said frame.
Claim 20
Dependent Claim
105 words
A firearm according to claim 17 further including A safety mechanism comprising a tumbler member rotatably mounted to said slide, said tumbler member being rotatable from a nonsafety position in which said hammer can move to firing position and a safety position in which said tumbler prevents said hammer from engaging said firing pin, a rear sight on said slide, and detent means for locking said tumbler in either of said nonsafety and safety position, said detent means including a detent member engageable with said tumbler and spring means biasing said detent means against said tumbler, said spring means being retained by said rear sight.
Claim 21
Dependent Claim
36 words
A firearm according to claim 17 further including a front sight removably attached to said slide, said one end of said recoil spring being engaged with a portion of said front sight disposed within said slide.
References Cited (Backward Citations)
US1664788A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |