US3079901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unthrottled internal combustion engine
Assignee: Borg Warner Corp
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Filing: 1960-09-28
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Granted: 1963-03-05
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Expires: 1980-09-28
Abstract
No abstract record available.
Inventors
- 👤 Irving H Hallberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:32
CPC Classifications
F; F02; F02B; F02B23/00; F02B23/08; F02B23/10; F02B23/101; F02M; F02M69/00; F02B2720/00; F02B2720/15; F02B2720/152; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
IN AN UNTHROTTLED INTERNAL COMBUSTION ENGINE HAVING A CYLINDER, AIR INTAKE MEANS AND EXHAUST MEANS FOR SAID CYLINDER, A CYLINDER HEAD, SAID CYLINDER HEAD DEFINING A SUBSTANTIALLY FLAT PLANE WHICH DEFINES THE UPPER LIMITS OF THE SAID COMBUSTION SPACE, A PISTON, SAID PISTON HAVING AN IRREGULAR CROWN AND RECIPROCALLY OPERABLE IN SAID CYLINDER A COMBUSTION SPACE BETWEEN SAID CYLINDER HEAD AND SAID IRREGULAR CROWN, THE SAID COMBUSTION SPACE COMPRISING AN AUXILIARY IGNITION CHAMBER AND A RESIDUAL COMBUSTION SPACE WHEN THE SAID PISTON IS SUBSTANTIALLY AT T.D.C., SAID IRREGULAR CROWN PROVIDING MEANS WHICH SEPARATES SAID AUXILIARY IGNITION CHAMBER FROM SAID RESIDUAL COMBUSTION SPACE, A SPARK PLUG INSERTED IN SAID AUXILIARY IGNITION CHAMBER, FUEL INJECTION MEANS DIRECTING FUEL AT AN ANGLE
Claim 2
Dependent Claim
119 words
IN AN UNTHROTTLED INTERNAL COMBUSTION ENGINE HAVING A CYLINDER, AIR INTAKE MEANS AND EXHAUST MEANS FOR SAID CYLINDER, A CYLINDER HEAD, SAID CYLINDER HEAD DEFINING A SUBSTANTIALLY FLAT PLANE WHICH DEFINES THE UPPER LIMITS OF THE SAID COMBUSTION SPACE, A PISTON, SAID PISTON HAVING AN IRREGULAR CROWN AND RECIPROCALLY OPERABLE IN SAID CYLINDER A COMBUSTION SPACE BETWEEN SAID CYLINDER HEAD AND SAID IRREGULAR CROWN, THE SAID COMBUSTION SPACE COMPRISING AN AUXILIARY IGNITION CHAMBER AND A RESIDUAL COMBUSTION SPACE WHEN THE SAID PISTON IS SUBSTANTIALLY AT T.D.C., SAID IRREGULAR CROWN PROVIDING MEANS WHICH SEPARATES SAID AUXILIARY IGNITION CHAMBER FROM SAID RESIDUAL COMBUSTION SPACE, A SPARK PLUG INSERTED IN SAID AUXILIARY IGNITION CHAMBER, FUEL INJECTION MEANS DIRECTING FUEL AT AN ANGLE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-04 | 1966-09-03 | 1967-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-04 | 1970-09-03 | 1971-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-04 | 1974-09-03 | 1975-03-05 | $7700.00 | Window Closed / Lapsed |