US3580113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical ignition firearm, with a forwardly sliding barrel
Assignee: US REPEATING ARMS COMPANY Inc
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Filing: 1969-09-12
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Granted: 1971-05-25
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Expires: 1989-09-12
Abstract
Abstract A firearm for electrically firing caseless ammunition having no primer. A switch is actuated by the trigger to permit passage of current from a capacitor to an electrode contacting the ammunition. Elapsed time between trigger pull and firing of the ammunition is decreased as compared to impact ignition firearms. The gun is prevented from firing unless the action is locked in its battery position.
Inventors
- 👤 Marcus Ramsay
- 👤 Arthur W Lilley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:41
CPC Classifications
F; F41; F41A; F41A19/00; F41A19/58
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
208 words
A firearm for electrically firing a round of ammunition, said firearm comprising: a. a receiver; b. a bolt assembly fixedly mounted in said receiver; c. a barrel slidably mounted on said receiver, said barrel having a portion extending deeply into said receiver, and said barrel being slidably away from said receiver to a breech-open position wherein said portion defines a tray for receiving fresh shells, and said barrel being slidable toward said receiver to a breech-closed position; d. an electrode mounted in said bolt assembly; e. firing switch means mounted in said receiver, said firing switch means being electrically connected to said electrode; f. a source of electrical current mounted in the firearm and electrically connected to said firing switch whereby actuation of said firing switch electrically connects said source of electrical current to said electrode; g. trigger means, including an actuating bar, mounted on said receiver, said actuating bar being operable, when said trigger means is pulled to actuate said firing switch; h. locking means operable to lock said barrel in said breechclosed position; and i. blocking means movable to a position to block said actuating bar from actuating said firing switch only when said locking means is disabled from locking said barrel in said breechclosed position.
Claim 2
Dependent Claim
208 words
A firearm for electrically firing a round of ammunition, said firearm comprising: a. a receiver; b. a bolt assembly fixedly mounted in said receiver; c. a barrel slidably mounted on said receiver, said barrel having a portion extending deeply into said receiver, and said barrel being slidably away from said receiver to a breech-open position wherein said portion defines a tray for receiving fresh shells, and said barrel being slidable toward said receiver to a breech-closed position; d. an electrode mounted in said bolt assembly; e. firing switch means mounted in said receiver, said firing switch means being electrically connected to said electrode; f. a source of electrical current mounted in the firearm and electrically connected to said firing switch whereby actuation of said firing switch electrically connects said source of electrical current to said electrode; g. trigger means, including an actuating bar, mounted on said receiver, said actuating bar being operable, when said trigger means is pulled to actuate said firing switch; h. locking means operable to lock said barrel in said breechclosed position; and i. blocking means movable to a position to block said actuating bar from actuating said firing switch only when said locking means is disabled from locking said barrel in said breechclosed position.
Claim 3
Dependent Claim
25 words
The firearm of claim 1, further comprising a safety operable to electrically disconnect said firing switch from said electrode to preVent firing of the firearm.
Claim 4
Dependent Claim
23 words
The firearm of claim 1, further comprising spring means contacting said locking means to bias the latter toward locking engagement with said barrel.
Claim 5
Dependent Claim
25 words
The firearm of claim 1, further comprising spring means connected to said blocking means to bias the latter away from an actuating bar blocking position.
Claim 6
Dependent Claim
246 words
A firearm for electrically firing a round of ammunition, said firearm comprising: a. a receiver; b. a bolt assembly fixedly mounted in said receiver; c. a barrel movable mounted on said receiver and movable away from said receiver to a breech-open position and toward said receiver to a breech-closed position; d. an electrode mounted in said bolt assembly; e. firing switch means mounted in said receiver and electrically connected to said electrode, actuation of said firing switch being operative to close an electrical circuit with said electrode; f. trigger means mounted in said receiver, said trigger means being operable to actuate said firing switch means; g. locking means mounted on the firearm and movable between a position engaging said barrel to lock the latter in said breech-closed position, and a position offset from said barrel to free the latter for movement away from said breech-closed position; h. blocking means mounted in said receiver and movable between a trigger-blocking position preventing said trigger means from actuating said firing switch, and a trigger-freeing position to permit said trigger means to actuate said firing switch; and i. lever means pivotally mounted in said receiver and operably connected to said locking means and said blocking means, said lever means being operable to concurrently move said locking means to said offset position and said blocking means to said trigger-blocking position and return, whereby said trigger means can actuate said switch means only when said barrel is locked in said breech-closed position.
Claim 7
Dependent Claim
246 words
A firearm for electrically firing a round of ammunition, said firearm comprising: a. a receiver; b. a bolt assembly fixedly mounted in said receiver; c. a barrel movable mounted on said receiver and movable away from said receiver to a breech-open position and toward said receiver to a breech-closed position; d. an electrode mounted in said bolt assembly; e. firing switch means mounted in said receiver and electrically connected to said electrode, actuation of said firing switch being operative to close an electrical circuit with said electrode; f. trigger means mounted in said receiver, said trigger means being operable to actuate said firing switch means; g. locking means mounted on the firearm and movable between a position engaging said barrel to lock the latter in said breech-closed position, and a position offset from said barrel to free the latter for movement away from said breech-closed position; h. blocking means mounted in said receiver and movable between a trigger-blocking position preventing said trigger means from actuating said firing switch, and a trigger-freeing position to permit said trigger means to actuate said firing switch; and i. lever means pivotally mounted in said receiver and operably connected to said locking means and said blocking means, said lever means being operable to concurrently move said locking means to said offset position and said blocking means to said trigger-blocking position and return, whereby said trigger means can actuate said switch means only when said barrel is locked in said breech-closed position.
Claim 8
Dependent Claim
79 words
The firearm of claim 5, wherein said trigger means comprises a trigger; an actuating bar pivotally mounted on said trigger and extending from said trigger to a point adjacent said switch means and beyond; and a pivot pin adjustably mounted on said actuating bar and providing a variable pivot arm which moves said actuating bar to actuate said switch means; said blocking means, when in said trigger-blocking position, contacting said actuating bar to prevent pivoting movement of the latter.
Claim 9
Dependent Claim
22 words
The firearm of claim 5, further comprising spring means contacting said lever means to bias said locking means toward said barrel-engaging position.
Claim 10
Dependent Claim
21 words
The firearm of claim 5, further comprising spring means contacting said blocking means to urge the latter toward said trigger-freeing position.
Claim 11
Dependent Claim
25 words
The firearm of claim 5, further comprising safety means operable to electrically disconnect said firing switch from said electrode to prevent firing of the firearm.
References Cited (Backward Citations)
US3255547A
Cited
US3505927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |