Patent US3309996A successfully refreshed from Google Patents.
US3309996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid fuel injection pumps
Assignee: CAV Ltd
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Filing: 1965-02-26
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Granted: 1967-03-21
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Expires: 1985-02-26
Abstract
No abstract record available.
Inventors
- 👤 Rosselli Andrew Carlo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:29
CPC Classifications
F; F02; F02M; F02M59/00; F02M59/20; F02M59/34; F02M59/36; F02M59/365
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
193 words
A LIQUID FUEL INJECTION PUMP COMPRISING IN COMBINATION, A PUMP BODY, A CYLINDRICAL BORE IN THE BODY, A CYLINDER COAXIAL WITH THE BORE AND AT THE INNER END THEREOF, AN AXIALLY MOVABLE PLUNGER SLIDABLE WITHIN THE BORE, AND A PISTON MOUNTED ON THE PLUNGER AND SLIDING WITHIN SAID CYLINDER, FIRST RESILIENT MEANS URGING THE PLUNGER AND PISTON OUT OF THE BORE AND CYLINDER RESPECTIVELY, SAID PLUNGER AND PISTON BEING ADAPTED TO BE MOVED INWARDLY IN TIMED RELATIONSHIP WITH AN ENGINER WITH WHICH THE PUMP IS ASSOCIATED, THE SWEPT VOLUME OF THE PLUNGER BEING LESS THAN THAT OF THE PISTON, AN OUTLET AT THE OUTER END OF THE BORE, A DELIVERY VALVE IN SAID OUTLET FOR PREVENTING THE FLOW OF FUEL INTO THE BORE, A FUEL INLET PASSAGE AT THE INNER END OF THE CYLINDER, SAID INLET PASSAGE BEING ARRANGED TO BE UNCOVERED BY THE PISTON NEAR THE OUTWARD LIMIT OF ITS STROKE, A PORT FORMED IN THE WALL OF THE BORE, SAID PORT BEING ARRANGED TO BE UNCOVERED BY THE PLUNGER NEAR THE OUTWARD LIMIT OF ITS TRAVEL, A TRANSFER PASSAGE SERVING TO CONNECT THE INNER END OF SAID CYLINDER WITH SAID PORT,
Claim 2
Dependent Claim
193 words
A LIQUID FUEL INJECTION PUMP COMPRISING IN COMBINATION, A PUMP BODY, A CYLINDRICAL BORE IN THE BODY, A CYLINDER COAXIAL WITH THE BORE AND AT THE INNER END THEREOF, AN AXIALLY MOVABLE PLUNGER SLIDABLE WITHIN THE BORE, AND A PISTON MOUNTED ON THE PLUNGER AND SLIDING WITHIN SAID CYLINDER, FIRST RESILIENT MEANS URGING THE PLUNGER AND PISTON OUT OF THE BORE AND CYLINDER RESPECTIVELY, SAID PLUNGER AND PISTON BEING ADAPTED TO BE MOVED INWARDLY IN TIMED RELATIONSHIP WITH AN ENGINER WITH WHICH THE PUMP IS ASSOCIATED, THE SWEPT VOLUME OF THE PLUNGER BEING LESS THAN THAT OF THE PISTON, AN OUTLET AT THE OUTER END OF THE BORE, A DELIVERY VALVE IN SAID OUTLET FOR PREVENTING THE FLOW OF FUEL INTO THE BORE, A FUEL INLET PASSAGE AT THE INNER END OF THE CYLINDER, SAID INLET PASSAGE BEING ARRANGED TO BE UNCOVERED BY THE PISTON NEAR THE OUTWARD LIMIT OF ITS STROKE, A PORT FORMED IN THE WALL OF THE BORE, SAID PORT BEING ARRANGED TO BE UNCOVERED BY THE PLUNGER NEAR THE OUTWARD LIMIT OF ITS TRAVEL, A TRANSFER PASSAGE SERVING TO CONNECT THE INNER END OF SAID CYLINDER WITH SAID PORT,
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |