Patent US3231003A successfully refreshed from Google Patents.
US3231003A
Expired / Lapsed
US
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Control valve means for fuel injection systems
Assignee: Individual
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Filing: 1964-03-06
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Granted: 1966-01-25
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Expires: 1984-03-06
Abstract
No abstract record available.
Inventors
- 👤 Jr Alva H Richcreek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:14
CPC Classifications
F; F02; F02M; F02M63/00; F02M63/02; F02M63/0205; F02B; F02B3/00; F02B3/06; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2703; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7822; Y10T137/7823; Y10T137/8593; Y10T137/85954
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN A FUEL INJECTION SYSTEM FOR AN ENGINE HAVING A FUEL TANK, A PUMP ENGINE INJECTORS, FEED LINE MEANS CONNECTING SAID PUMP TO SAID TANK AND SAID INJECTORS FOR DELIVERING FUEL FROM SAID TANK TO SAID INJECTORS, RETURN LINE MEANS CONNECTED BETWEEN THE ENGINE AND SAID TANK FOR RETURNING EXCESS FUEL FROM SAID INJECTORS, THE IMPROVEMENT COMPRISING AN OVERLOAD VALVE MEANS CONNECTED TO SAID RETURN LINE MEANS AND SAID LINE MEANS BETWEEN SAID PUMP AND TANK, SAID VALVE MEANS BEING OPERABLE TO SUBSTANTIALLY TERMINATE THE FUEL FLOW THROUGH SAID FEED LINE MEANS WHEN THE PRESSURE IN SAID RETURN LINE MEANS EXCEEDS A PREDETERMINED AMOUNT.
Claim 2
Dependent Claim
104 words
IN A FUEL INJECTION SYSTEM FOR AN ENGINE HAVING A FUEL TANK, A PUMP ENGINE INJECTORS, FEED LINE MEANS CONNECTING SAID PUMP TO SAID TANK AND SAID INJECTORS FOR DELIVERING FUEL FROM SAID TANK TO SAID INJECTORS, RETURN LINE MEANS CONNECTED BETWEEN THE ENGINE AND SAID TANK FOR RETURNING EXCESS FUEL FROM SAID INJECTORS, THE IMPROVEMENT COMPRISING AN OVERLOAD VALVE MEANS CONNECTED TO SAID RETURN LINE MEANS AND SAID LINE MEANS BETWEEN SAID PUMP AND TANK, SAID VALVE MEANS BEING OPERABLE TO SUBSTANTIALLY TERMINATE THE FUEL FLOW THROUGH SAID FEED LINE MEANS WHEN THE PRESSURE IN SAID RETURN LINE MEANS EXCEEDS A PREDETERMINED AMOUNT.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |