Patent US3089266A successfully refreshed from Google Patents.
Patent US3229676A successfully refreshed from Google Patents.
US3229676A
Expired / Lapsed
US
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Fuel injection system
Assignee: Ingersoll Rand Co
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Filing: 1964-03-10
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Granted: 1966-01-18
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Expires: 1984-03-10
Abstract
No abstract record available.
Inventors
- 👤 Otmar M Ulbing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:04
CPC Classifications
F; F02; F02B; F02B19/00; F02B19/14; 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
222 words
IN AN INTERNAL COMBUSTION CHAMBER HAVING A CYLINDER CLOSED AT ONE END BY A CYLINDER HEAD AND CONTAINING A RECIPROCABLE PISTON COOPERATING WITH THE CYLINDER AND CYLINDER HEAD TO FORM AN ENCLOSED COMBUSTION CHAMBER, THE COMBINATION OF A LOW PRESSURE FUEL INJECTION SYSTEM COMPRISING: (A) AN IGNITION CHAMBER FORMED AT LEAST IN PART IN SAID CYLINDER AND OPENING INTO THE TOP OF SAID COMBUSTION CHAMBER; (B) MEANS IN SAID IGNITION CHAMBER FOR IGNITING FUEL IN SAID IGNITION CHAMBER; (C) A POCKET FORMED IN SAID CYLINDER HEAD AT THE TOP OF SAID COMBUSTION CHAMBER SPACED FROM SAID IGNITION CHAMBER AND ARRANGED SO THAT A PRESSURE DIFFERENTIAL IS CREATED BETWEEN SAID POCKET AND SAID IGNITION CHAMBER BY THE APPROACH OF THE PISTON TO THE TOP OF ITS STROKE AND AS A RESULT OF AIR BEING COMPRESSED CAUSED BY THE "SUUISH" EFFECT BETWEEN THE PISTON AND THE CYLINDER HEAD WITH THE PRESSURE IN SAID POCKET BEING HIGHER, SAID "SQUISH" EFFECT BEING LIMITED TO THE SHORT PERIOD OF TIME THAT THE PISTON IS VERY CLOSE TO THE CYLINDER HEAD; (D) A SMALL FUEL STORAGE PASSAGE IN SAID HEAD AND INTERCONNECTING SAID POCKET AND SAID IGNITION CHAMBER; AND (E) MEANS FOR INJECTING FUEL INTO SAID FUEL STORAGE PASSAGE DURING A PORTION OF THE CYCLE OF THE PISTON WHEN THE PRESSURE IN THE COMBUSTION CHAMBER IS RELATIVELY LOW.
Claim 2
Dependent Claim
222 words
IN AN INTERNAL COMBUSTION CHAMBER HAVING A CYLINDER CLOSED AT ONE END BY A CYLINDER HEAD AND CONTAINING A RECIPROCABLE PISTON COOPERATING WITH THE CYLINDER AND CYLINDER HEAD TO FORM AN ENCLOSED COMBUSTION CHAMBER, THE COMBINATION OF A LOW PRESSURE FUEL INJECTION SYSTEM COMPRISING: (A) AN IGNITION CHAMBER FORMED AT LEAST IN PART IN SAID CYLINDER AND OPENING INTO THE TOP OF SAID COMBUSTION CHAMBER; (B) MEANS IN SAID IGNITION CHAMBER FOR IGNITING FUEL IN SAID IGNITION CHAMBER; (C) A POCKET FORMED IN SAID CYLINDER HEAD AT THE TOP OF SAID COMBUSTION CHAMBER SPACED FROM SAID IGNITION CHAMBER AND ARRANGED SO THAT A PRESSURE DIFFERENTIAL IS CREATED BETWEEN SAID POCKET AND SAID IGNITION CHAMBER BY THE APPROACH OF THE PISTON TO THE TOP OF ITS STROKE AND AS A RESULT OF AIR BEING COMPRESSED CAUSED BY THE "SUUISH" EFFECT BETWEEN THE PISTON AND THE CYLINDER HEAD WITH THE PRESSURE IN SAID POCKET BEING HIGHER, SAID "SQUISH" EFFECT BEING LIMITED TO THE SHORT PERIOD OF TIME THAT THE PISTON IS VERY CLOSE TO THE CYLINDER HEAD; (D) A SMALL FUEL STORAGE PASSAGE IN SAID HEAD AND INTERCONNECTING SAID POCKET AND SAID IGNITION CHAMBER; AND (E) MEANS FOR INJECTING FUEL INTO SAID FUEL STORAGE PASSAGE DURING A PORTION OF THE CYCLE OF THE PISTON WHEN THE PRESSURE IN THE COMBUSTION CHAMBER IS RELATIVELY LOW.
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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |