Patent US3142261A successfully refreshed from Google Patents.
US3142261A
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Fuel injection pump
Assignee: Borg Warner Corp
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Filing: 1961-10-03
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Granted: 1964-07-28
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Expires: 1981-10-03
Abstract
No abstract record available.
Inventors
- 👤 Charles W May
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:37
CPC Classifications
F; F02; F02M; F02M41/00; F02M41/08; F02M41/10; F02M41/12; F02M41/121; F02M59/00; F02M59/44; F02M59/445
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
IN A FUEL INJECTION PUMP HAVING A PUMP BODY FORMED WITH A LONGITUDINAL CYLINDRICAL BORE THEREIN AND A PUMPING PLUNGER CLOSELY DISPOSED WITHIN THE BORE, THE COMBINATION OF MEANS DEFINING AN ANNULAR GROOVE FORMED IN SAID BODY SURROUNDING SAID BORE, AND AN ANNULAR RING IN CLOSE AXIAL CONTACT WITH SAID BODY AND TIGHTLY FITTED AGAINST THE OUTER PERIPHERY OF SAID GROOVE AND SPACED FROM THE PUMPING PLUNGER, SAID RING HAVING A CO-EFFICIENT OF THERMAL EXPANSION GREATER THAN THAT OF THE PUMPING PLUNGER.
Claim 2
Dependent Claim
82 words
IN A FUEL INJECTION PUMP HAVING A PUMP BODY FORMED WITH A LONGITUDINAL CYLINDRICAL BORE THEREIN AND A PUMPING PLUNGER CLOSELY DISPOSED WITHIN THE BORE, THE COMBINATION OF MEANS DEFINING AN ANNULAR GROOVE FORMED IN SAID BODY SURROUNDING SAID BORE, AND AN ANNULAR RING IN CLOSE AXIAL CONTACT WITH SAID BODY AND TIGHTLY FITTED AGAINST THE OUTER PERIPHERY OF SAID GROOVE AND SPACED FROM THE PUMPING PLUNGER, SAID RING HAVING A CO-EFFICIENT OF THERMAL EXPANSION GREATER THAN THAT OF THE PUMPING PLUNGER.
References Cited (Backward Citations)
US702501A
Cited
US2930320A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |