US3307491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel pump venting
Assignee: Allis Chalmers Corp
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Filing: 1965-07-15
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Granted: 1967-03-07
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Expires: 1985-07-15
Abstract
No abstract record available.
Inventors
- 👤 George D Wolff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:39
CPC Classifications
F; F02; F02M; F02M55/00; F02M55/007; F02M41/00; F02M41/08; F02M41/10; F02M41/12; F02M41/123; F02M41/125; F02M41/126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A FUEL INJECTION PUMP FOR DELIVERING FUEL TO AN INJECTOR BY WAY OF A DELIVERY PASSAGE COMPRISING A HOUSING HAVING WALL MEANS DEFINING A SUPPLY CHAMBER FOR MAINTAINING FUEL AT ABOVE ATMOSPHERIC AND SUBSTANTIALLY BELOW INJECTION PRESSURES, AND A MANUALLY OPERABLE PUMP CONTROL ROD FOR CONTROLLING FUEL DELIVERY OF SAID INJECTION PUMP SHIFTABLY DISPOSED IN SAID WALL MEANS AND MOVABLE BETWEEN A FUEL SHUTOFF POSITION IN WHICH SAID SUPPLY CHAMBER IS VENTED TO THE EXTERIOR OF SAID WALL MEANS INDEPENDENTLY OF SAID DELIVERY PASSAGE AND A FUEL DELIVERY POSITION IN WHICH SAID SUPPLY CHAMBER IS NOT VENTED TO THE EXTERIOR OF SAID WALL MEANS.
Claim 2
Dependent Claim
104 words
A FUEL INJECTION PUMP FOR DELIVERING FUEL TO AN INJECTOR BY WAY OF A DELIVERY PASSAGE COMPRISING A HOUSING HAVING WALL MEANS DEFINING A SUPPLY CHAMBER FOR MAINTAINING FUEL AT ABOVE ATMOSPHERIC AND SUBSTANTIALLY BELOW INJECTION PRESSURES, AND A MANUALLY OPERABLE PUMP CONTROL ROD FOR CONTROLLING FUEL DELIVERY OF SAID INJECTION PUMP SHIFTABLY DISPOSED IN SAID WALL MEANS AND MOVABLE BETWEEN A FUEL SHUTOFF POSITION IN WHICH SAID SUPPLY CHAMBER IS VENTED TO THE EXTERIOR OF SAID WALL MEANS INDEPENDENTLY OF SAID DELIVERY PASSAGE AND A FUEL DELIVERY POSITION IN WHICH SAID SUPPLY CHAMBER IS NOT VENTED TO THE EXTERIOR OF SAID WALL MEANS.
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |