US4041633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual-barrel pistol
Assignee: Individual
•
Filing: 1975-09-24
•
Granted: 1977-08-16
•
Expires: 1995-09-24
Abstract
Abstract A pistol of the revolver type having two vertically spaced barrels having bores of different diameters, a cylinder having chambers for two different sized cartridges, the bullets therein being adapted to fit, respectively, the barrels of different diameter, and means for selectively firing cartridges in said cylinder chambers.
Inventors
- 👤 Pascal Scrufari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:09
CPC Classifications
F; F41; F41C; F41C3/00; F41C3/14; F41A; F41A19/00; F41A19/06; F41A19/18; F41A19/19; F41A19/21; F41A19/22
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
160 words
In a pistol of the revolver type having a frame adapted for mounting a cylinder for holding cartridges, means for indexing said cylinder, a trigger, and a hammer interconnected with said trigger, the combination of two vertically spaced barrels with bores of different sizes, said barrels being attached to said frame; a rotatable cylinder carried by said frame having a plurality of chambers adapted to hold cartridges with bullets fitting each of said bores, said chambers being alignable with said barrels; a pair of firing pins carried in said frame, said firing pins being vertically spaced and adapted to fire cartridges in chambers of said cylinder aligned with said barrels; a hammer block engaging said firing pins and adapted to be struck by said hammer to produce firing of said cartridges; and barrel selecting means, movable with respect to said hammer block, for selectively preventing substantial movement of one or the other of said firing pins by said hammer block.
Claim 2
Dependent Claim
160 words
In a pistol of the revolver type having a frame adapted for mounting a cylinder for holding cartridges, means for indexing said cylinder, a trigger, and a hammer interconnected with said trigger, the combination of two vertically spaced barrels with bores of different sizes, said barrels being attached to said frame; a rotatable cylinder carried by said frame having a plurality of chambers adapted to hold cartridges with bullets fitting each of said bores, said chambers being alignable with said barrels; a pair of firing pins carried in said frame, said firing pins being vertically spaced and adapted to fire cartridges in chambers of said cylinder aligned with said barrels; a hammer block engaging said firing pins and adapted to be struck by said hammer to produce firing of said cartridges; and barrel selecting means, movable with respect to said hammer block, for selectively preventing substantial movement of one or the other of said firing pins by said hammer block.
Claim 3
Dependent Claim
31 words
A pistol as defined in claim 1 wherein the lower of said barrels has a bore of larger size than the upper barrel and is below the axis of said cylinder.
Claim 4
Dependent Claim
15 words
A pistol as defined in claim 2 wherein said barrels are integral with said frame.
Claim 5
Dependent Claim
26 words
A pistol as defined in claim 2 wherein the chambers in said cylinder are arranged with the larger diameter chambers alternating with the smaller diameter chambers.
Claim 6
Dependent Claim
36 words
A pistol as defined in claim 4 wherein said chambers of larger diameter are arranged in a circle and said chambers of smaller diameter are arranged in a circle of radius greater than said first-mentioned circle.
Claim 7
Dependent Claim
81 words
A pistol as defined in claim 1 wherein said barrel selecting means comprises a pair of fulcrum rods and said rods may be selectively moved to provide a fulcrum about which said hammer block pivots when struck by said hammer, said fulcrum being adjacent the upper end of said hammer block when the lower of said firing pins is to be actuated and being adjacent the lower end of said hammer block when the upper firing pin is to be actuated.
Claim 8
Dependent Claim
26 words
A pistol as defined in claim 3 wherein the chambers in said cylinder are arranged with the larger diameter chambers alternating with the smaller diameter chambers.
Claim 9
Dependent Claim
36 words
A pistol as defined in claim 7 wherein said chambers of larger diameter are arranged in a circle and said chambers of smaller diameter are arranged in a circle of radius greater than said first-mentioned circle.
Claim 10
Dependent Claim
81 words
A pistol as defined in claim 2 wherein said barrel selecting means comprises a pair of fulcrum rods and said rods may be selectively moved to provide a fulcrum about which said hammer block pivots when struck by said hammer, said fulcrum being adjacent the upper end of said hammer block when the lower of said firing pins is to be actuated and being adjacent the lower end of said hammer block when the upper firing pin is to be actuated.
Claim 11
Dependent Claim
81 words
A pistol as defined in claim 5 wherein said barrel selecting means comprises a pair of fulcrum rods and said rods may be selectively moved to provide a fulcrum about which said hammer block pivots when struck by said hammer, said fulcrum being adjacent the upper end of said hammer block when the lower of said firing pins is to be actuated and being adjacent the lower end of said hammer block when the upper firing pin is to be actuated.
Claim 12
Dependent Claim
15 words
A pistol as defined in claim 10 wherin said barrels are integral with said frame.
Claim 13
Dependent Claim
20 words
A pistol as defined in claim 1 wherein each of said chambers is alignable with only one of said barrels.
Claim 14
Dependent Claim
20 words
A pistol as defined in claim 2 wherein each of said chambers is alignable with only one of said barrels.
Claim 15
Dependent Claim
20 words
A pistol as defined in claim 10 wherein each of said chambers is alignable with only one of said barrels.
Claim 16
Dependent Claim
19 words
A pistol as defined in claim 5 wherein said barrel selecting means comprises a pair of movable fulcrum rods.
References Cited (Backward Citations)
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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) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |