US3245457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of igniting liquid fuel
Assignee: HUNTER
•
Filing: 1965-01-29
•
Granted: 1966-04-12
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Expires: 1985-01-29
Abstract
No abstract record available.
Inventors
- 👤 Harris W Smith
- 👤 Robert H Hunter
- 👤 Road Epping
- 👤 Road Mill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:48
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/36; F23D11/42; F23Q; F23Q3/00; F23Q3/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
THE METHOD OF IGNITING LIQUID FUEL WHICH COMPRISES ABSORBING THE FUEL IN A POROUS SEMI-CONDUCTING CERAMIC OF THE TYPE HAVING LOW HEAT CONDUCTIVITY AND THE CHARACTERISTIC OF INCREASING IN ELECTRICAL CONDUCTIVITY OVER A TEMPERATURE RANGE WHOLLY WITHIN THE VISIBLE HEAT SPECTRUM, PRODUCING A CONTINUOUS ELECTRICAL ARC ACROSS THE SURFACE OF THE CERAMIC SUFFICIENT TO HEAT A PORTION OF THE CERAMIC TO SAID TEMPERATURE RANGE TO ACHIEVE ELECTRICAL CONDUCTIVITY ALONG A FILAMENTARY PATH PROVIDED BY THE CERAMIC, MAINTAINING AN ELECTRICAL CURRENT ALONG SAID FILAMENTARY PATH AND BEYOND THE CERAMIC TO SUSTAIN THE CONDUCTIVE PATH TO HEAT A SURFACE SPOT INCANDESCENCE AND TO MAINTAIN AN ELECTRICAL ARC THROUGH AN ATMOSPHERIC ZONE ADJACENT SAID SPOT, CONTINUOUSLY VAPORIZING THE ABSORBED FUEL ADJACENT SAID SPOT TO PROVIDE VAPOR PHASE FUEL IN SAID ZONE, COMMINGLING AIR WITH THE VAPORIZED FUEL TO PRODUCE A COMBUSTIBLE MIXTURE, AND SUBJECTING THE MIXTURE TO SAID FILAMENTARY ARC IN SAID ZONE TO IGNITE THE MIXTURE.
Claim 2
Independent Claim
154 words
THE METHOD OF IGNITING LIQUID FUEL WHICH COMPRISES ABSORBING THE FUEL IN A POROUS SEMI-CONDUCTING CERAMIC OF THE TYPE HAVING LOW HEAT CONDUCTIVITY AND THE CHARACTERISTIC OF INCREASING IN ELECTRICAL CONDUCTIVITY OVER A TEMPERATURE RANGE WHOLLY WITHIN THE VISIBLE HEAT SPECTRUM, PRODUCING A CONTINUOUS ELECTRICAL ARC ACROSS THE SURFACE OF THE CERAMIC SUFFICIENT TO HEAT A PORTION OF THE CERAMIC TO SAID TEMPERATURE RANGE TO ACHIEVE ELECTRICAL CONDUCTIVITY ALONG A FILAMENTARY PATH PROVIDED BY THE CERAMIC, MAINTAINING AN ELECTRICAL CURRENT ALONG SAID FILAMENTARY PATH AND BEYOND THE CERAMIC TO SUSTAIN THE CONDUCTIVE PATH TO HEAT A SURFACE SPOT INCANDESCENCE AND TO MAINTAIN AN ELECTRICAL ARC THROUGH AN ATMOSPHERIC ZONE ADJACENT SAID SPOT, CONTINUOUSLY VAPORIZING THE ABSORBED FUEL ADJACENT SAID SPOT TO PROVIDE VAPOR PHASE FUEL IN SAID ZONE, COMMINGLING AIR WITH THE VAPORIZED FUEL TO PRODUCE A COMBUSTIBLE MIXTURE, AND SUBJECTING THE MIXTURE TO SAID FILAMENTARY ARC IN SAID ZONE TO IGNITE THE MIXTURE.
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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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |