Patent US3756120A successfully refreshed from Google Patents.
US3756120A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pistol having movable barrel
Assignee: CFPI Inc A CORP OF
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Filing: 1971-12-13
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Granted: 1973-09-04
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Expires: 1991-12-13
Abstract
Abstract The pistol of this invention incorporates a fire control group of an enblock type removably mounted in a receiver and having a housing extremity engaging the receiver at a location remote from a hammer pivot axis, a slide reciprocably mounted on the receiver, and a barrel operated by the slide and having a downwardly projecting lug, the lug being received for limited captured movement in the frame between longitudinally spaced vertically offset limit positions, and a pair of camming pins longitudinally spaced apart in the receiver to extend laterally across the path of movement of the barrel lug and serving both to guide and stop barrel movement relative to the slide in timed relation to its movements.
Inventors
- 👤 R Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:28
CPC Classifications
F; F41; F41A; F41A19/00; F41A19/06; F41A19/42; F41A19/43; F41A19/15; F41A19/47; F41A19/48; F41A5/00; F41A5/02; F41A5/04; F41C; F41C23/00; F41C23/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
199 words
A pistol comprising a frame, a barrel on the frame, a reciprocable operating slide on the frame for moving the barrel relative to the frame between a forward limit position wherein the barrel is in locked engagement with the slide, and a rear limit position vertically offset from the forward position and wherein the barrel is disengaged from the slide, and a barrel guide and stop mechanism connecting the barrel to the frame and including a lug projecting from the barrel and first and second laterally extending camming pins, the camming pins being of circular cross section and fixed to the frame in the path of movement of the barrel lug and mounted in longitudinally spaced relation in the frame, the first camming pin establishing said forward limit position, the second camming pin establishing said rear limit position and being in parallel and relatively raised rearwardly disposed relation to the first camming pin to position the barrel in relatively lowered relation to its forward limit position, the pins being spaced apart a longitudinal distance greater than the maximum dimension of a depending portion of the lug disposed between the pins to confine the barrel lug for captured movement therebetween.
Claim 2
Dependent Claim
199 words
A pistol comprising a frame, a barrel on the frame, a reciprocable operating slide on the frame for moving the barrel relative to the frame between a forward limit position wherein the barrel is in locked engagement with the slide, and a rear limit position vertically offset from the forward position and wherein the barrel is disengaged from the slide, and a barrel guide and stop mechanism connecting the barrel to the frame and including a lug projecting from the barrel and first and second laterally extending camming pins, the camming pins being of circular cross section and fixed to the frame in the path of movement of the barrel lug and mounted in longitudinally spaced relation in the frame, the first camming pin establishing said forward limit position, the second camming pin establishing said rear limit position and being in parallel and relatively raised rearwardly disposed relation to the first camming pin to position the barrel in relatively lowered relation to its forward limit position, the pins being spaced apart a longitudinal distance greater than the maximum dimension of a depending portion of the lug disposed between the pins to confine the barrel lug for captured movement therebetween.
Claim 3
Dependent Claim
28 words
The pistol of claim 1 wherein said first pin is releasably fixed to the frame for disassembly and reassembly of the barrel and slide relative to the frame.
Claim 4
Dependent Claim
37 words
The pistol of claim 1 further including a slide stop-open latch connected to one of said first and second camming pins, said one pin providing a pivot axis in the frame supporting the latch for pivotal movement.
Claim 5
Dependent Claim
268 words
A pistol comprising a frame, a barrel on the frame, a reciprocable operating slide on the frame for moving the barrel relative to the frame between a forward limit position wherein the barrel is in locked engagement with the slide, and a rear limit position vertically offset from the forward position and wherein the barrel is disengaged from the slide, and a barrel guide and stop mechanism connecting the barrel to the frame and including first and second laterally extending camming pins mounted in longitudinally spaced relation in the frame, the first and second camming pins each serving to guide the barrel between said forward and rear limit positions and maintaining the barrel and frame in cooperative assembly while permitting limited captured movement of the barrel relative to the frame, the barrel guide and stop mechanism further including a lug projecting from the barrel and having front and rear abutments on the barrel lug respectively engageable with the first and second camming pins, the first and second camming pins being of circular cross section and fixed to the frame in the path of movement of the barrel lug, said first pin establishing the forward limit position for the barrel, and said second pin establishing the rear limit position for the barrel in lower vertical relation to its forward limit position, the barrel lug having a generally flat contact surface extending forwardly of the front abutment, and a shoulder extending forwardly of the flat contact surface in inclined continuation therewith, the first pin providing bearing support for the flat contact surface of the barrel lug during reciprocable movement thereof.
Claim 6
Dependent Claim
268 words
A pistol comprising a frame, a barrel on the frame, a reciprocable operating slide on the frame for moving the barrel relative to the frame between a forward limit position wherein the barrel is in locked engagement with the slide, and a rear limit position vertically offset from the forward position and wherein the barrel is disengaged from the slide, and a barrel guide and stop mechanism connecting the barrel to the frame and including first and second laterally extending camming pins mounted in longitudinally spaced relation in the frame, the first and second camming pins each serving to guide the barrel between said forward and rear limit positions and maintaining the barrel and frame in cooperative assembly while permitting limited captured movement of the barrel relative to the frame, the barrel guide and stop mechanism further including a lug projecting from the barrel and having front and rear abutments on the barrel lug respectively engageable with the first and second camming pins, the first and second camming pins being of circular cross section and fixed to the frame in the path of movement of the barrel lug, said first pin establishing the forward limit position for the barrel, and said second pin establishing the rear limit position for the barrel in lower vertical relation to its forward limit position, the barrel lug having a generally flat contact surface extending forwardly of the front abutment, and a shoulder extending forwardly of the flat contact surface in inclined continuation therewith, the first pin providing bearing support for the flat contact surface of the barrel lug during reciprocable movement thereof.
Claim 7
Dependent Claim
20 words
The pistol of claim 4 wherein the barrel and slide are cooperatively locked in engagement in said forward limit 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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |