Patent US3110845A successfully refreshed from Google Patents.
US3110845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical igniter
Assignee: Hercules Powder Co
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Filing: 1960-06-07
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Granted: 1963-11-12
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Expires: 1980-06-07
Abstract
No abstract record available.
Inventors
- 👤 John W Ott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:54
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/103; F42B3/12; F42B3/124
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
AN ELECTRICAL IGNITER WHICH IS DESIGNED TO PENETRATE ONE END OF A GAS-PRODUCING CARTRIDGE HAVING A SOFT NONCONDUCTIVE CONTAINER AND TO IGNITE THE CARTRIDGE FOR THE PRODUCTION OF HIGH PRESSURE GAS IN A COMBUSTION CHAMBER, SAID IGNITER COMPRISING IN COMBINATION: (A) A RIGID LONGITUDINAL NONCONDUCTIVE BODY MEMBER HAVING A POINTED END AT ONE END THEREOF TO FORM MEANS FOR EASE OF PENETRATION INTO THE AFORESAID CARTRIDGE AND HAVING AN ENLARGED CYLINDRICAL PORTION AT THE OTHER END THEREOF CONTAINING A PAIR OF ELECTRICAL TERMINALS SEALED THEREIN TO WITHSTAND THE AFORESAID HIGH PRESSURE GAS; (B) A PLURALITY OF TRANSVERSE APERTURES EXTENDING THROUGH THE BODY MEMBER ADJACENT THE POINTED END THEREOF, AND (C) A CONTINUOUS ELECTRICAL RESISTANCE ELEMENT AFTERNATELY PASSING THROUGH SAID TRANSVERSE APERTURES, SAID ELEMENT HAVING A SUBSTANTIAL PORTION OF ITS LENGTH SUPPORTED BY AND DISPOSED EXTERIORLY OF THE BODY MEMBER IN COMPLETE NONCONDUCTIVE RELATIONSHIP WITH THE BODY MEMBER AND SAID ELEMENT HAVING EACH OF ITS ENDS CONNECTED TO EACH OF THE PAIR OF ELECTRICAL TERMINALS WHEREBY THE AFORESAID CARTRIDGE IS IGNITED WHEN A SUBSTANTIAL PORTION OF THE CONTINUOUS ELECTRICAL RESISTANCE ELEMENT HAS PENETRATED THEREINTO.
Claim 2
Dependent Claim
183 words
AN ELECTRICAL IGNITER WHICH IS DESIGNED TO PENETRATE ONE END OF A GAS-PRODUCING CARTRIDGE HAVING A SOFT NONCONDUCTIVE CONTAINER AND TO IGNITE THE CARTRIDGE FOR THE PRODUCTION OF HIGH PRESSURE GAS IN A COMBUSTION CHAMBER, SAID IGNITER COMPRISING IN COMBINATION: (A) A RIGID LONGITUDINAL NONCONDUCTIVE BODY MEMBER HAVING A POINTED END AT ONE END THEREOF TO FORM MEANS FOR EASE OF PENETRATION INTO THE AFORESAID CARTRIDGE AND HAVING AN ENLARGED CYLINDRICAL PORTION AT THE OTHER END THEREOF CONTAINING A PAIR OF ELECTRICAL TERMINALS SEALED THEREIN TO WITHSTAND THE AFORESAID HIGH PRESSURE GAS; (B) A PLURALITY OF TRANSVERSE APERTURES EXTENDING THROUGH THE BODY MEMBER ADJACENT THE POINTED END THEREOF, AND (C) A CONTINUOUS ELECTRICAL RESISTANCE ELEMENT AFTERNATELY PASSING THROUGH SAID TRANSVERSE APERTURES, SAID ELEMENT HAVING A SUBSTANTIAL PORTION OF ITS LENGTH SUPPORTED BY AND DISPOSED EXTERIORLY OF THE BODY MEMBER IN COMPLETE NONCONDUCTIVE RELATIONSHIP WITH THE BODY MEMBER AND SAID ELEMENT HAVING EACH OF ITS ENDS CONNECTED TO EACH OF THE PAIR OF ELECTRICAL TERMINALS WHEREBY THE AFORESAID CARTRIDGE IS IGNITED WHEN A SUBSTANTIAL PORTION OF THE CONTINUOUS ELECTRICAL RESISTANCE ELEMENT HAS PENETRATED THEREINTO.
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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) | 1966-11-11 | 1967-05-13 | 1967-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-11 | 1971-05-13 | 1971-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-11 | 1975-05-13 | 1975-11-12 | $7700.00 | Window Closed / Lapsed |