Patent US3572297A successfully refreshed from Google Patents.
US3572297A
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US
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Hydrogen fueled internal combustion engine
Assignee: ROGER C ALLEN
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Filing: 1970-01-26
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Granted: 1971-03-23
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Expires: 1990-01-26
Abstract
Abstract THIS INVENTION RELATES TO AN INTERNAL COMBUSTION ENGINE OPERATED BY DIRECT INJECTION OF HYDROGEN INTO THE CYLINDERS THEREOF. HYDROGEN IS MIXED WITH A PORTION OF THE AIR IN THE CYLINDERS TO FORM A COMBUSTIBLE MIXTURE WHICH IS IGNITED AND BURNED CONCURRENTLY WITH INJECTION OVER A PORTION OF THE EXPANSION STROKE AND IN SOME CASES A PORTION OF THE COMPRESSION STROKE. DUAL POPPET VALVES ARE USED FOR INJCTING THE HYDROGEN AND ARE TIMED TO OPEN AND CLOSE IN RESPONSE TO SENSED ENGINE OPERATING PARAMETERS.
Inventors
- 👤 Richard G Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:16
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/30; F02D41/3005; F02B; F02B43/00; F02B43/10; F02D19/00; F02D19/02; F02D19/021; F02D19/023; F02D19/024; F02D41/0025; F02D41/0027; F02M; F02M21/00; F02M21/02; F02M21/0203; F02M21/0206; F02M21/0218; F02M21/0248; F02M21/0251; F02M21/0254; F02M21/0257; F02M21/026; F02M21/0275; F02B3/00; F02B3/06; F02D41/20; F02D2041/2068; F02D2041/2079; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/30
Claims Analysis
Total Claims: 0
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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) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |