Patent US3331327A successfully refreshed from Google Patents.
US3331327A
Expired / Lapsed
US
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Fuel pump
Assignee: HARTFORD MACHINE SCREW CO
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Filing: 1965-12-09
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Granted: 1967-07-18
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Expires: 1985-12-09
Abstract
No abstract record available.
Inventors
- 👤 Vernon D Roosa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:32
CPC Classifications
F; F02; F02M; F02M39/00; F02M39/005; F02M41/00; F02M41/08; F02M41/14; F02M41/1405; F02M41/1411; F02M2700/00; F02M2700/13; F02M2700/1317
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
IN A FUEL PUMP COMPRISING A CASING HAVING INLET AND OUTLET PASSAGES, A BORE IN SAID CASING, A FUEL DISTRIBUTING ROTOR POSITIONED IN SAID BORE AND HAVING FUEL INLET PORT MEANS ADAPTED TO COMMUNICATE WITH SAID INLET PASSAGE AND HAVING OUTLET PORT MEANS ADAPTED TO COMMUNICATE IN SEQUENCE DURING THE ROTATION OF SAID ROTOR WITH THE OUTLET PASSAGES OF SAID CASING TO PERMIT ALTERNATE ADMISSION AND DISCHARGE OF FUEL FROM THE INTERIOR OF SAID ROTOR, A TRANSFER PUMP POSITIONED AT ONE END OF SAID ROTOR, SAID TRANSFER PUMP COMPRISING A HUB PORTION MOUNTED TO ROTATE WITH SAID ROTOR AND HAVING AT LEAST ONE TRANSVERSE SLOT THEREIN, A PUMPING VANE POSITONED IN SAID TRANSVERSE SLOT, AND AN ECCENTRIC CAM SURROUNDING SAID HUB PORTION, THE IMPROVEMENT WHEREIN AN AXIALLY ADJUSTABLE ANNULAR CUP ENCLOSES SAID TRANSFER PUMP AND PIVOTALLY MOUNTS AN END PLATE TO HOLD THE SAME IN ALIGNMENT WITH THE END OF SAID CAM.
Claim 2
Dependent Claim
152 words
IN A FUEL PUMP COMPRISING A CASING HAVING INLET AND OUTLET PASSAGES, A BORE IN SAID CASING, A FUEL DISTRIBUTING ROTOR POSITIONED IN SAID BORE AND HAVING FUEL INLET PORT MEANS ADAPTED TO COMMUNICATE WITH SAID INLET PASSAGE AND HAVING OUTLET PORT MEANS ADAPTED TO COMMUNICATE IN SEQUENCE DURING THE ROTATION OF SAID ROTOR WITH THE OUTLET PASSAGES OF SAID CASING TO PERMIT ALTERNATE ADMISSION AND DISCHARGE OF FUEL FROM THE INTERIOR OF SAID ROTOR, A TRANSFER PUMP POSITIONED AT ONE END OF SAID ROTOR, SAID TRANSFER PUMP COMPRISING A HUB PORTION MOUNTED TO ROTATE WITH SAID ROTOR AND HAVING AT LEAST ONE TRANSVERSE SLOT THEREIN, A PUMPING VANE POSITONED IN SAID TRANSVERSE SLOT, AND AN ECCENTRIC CAM SURROUNDING SAID HUB PORTION, THE IMPROVEMENT WHEREIN AN AXIALLY ADJUSTABLE ANNULAR CUP ENCLOSES SAID TRANSFER PUMP AND PIVOTALLY MOUNTS AN END PLATE TO HOLD THE SAME IN ALIGNMENT WITH THE END OF SAID CAM.
References Cited (Backward Citations)
US2931314A
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US3146715A
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US3166063A
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US3207140A
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US3207077A
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US3273503A
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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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |