US3215079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel pump
Assignee: HARTFORD MACHINE SCREW CO
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Filing: 1962-09-10
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Granted: 1965-11-02
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Expires: 1982-09-10
Abstract
No abstract record available.
Inventors
- 👤 Vernon D Roosa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:09
CPC Classifications
F; F02; F02M; F02M39/00; F02M39/005; F02M41/00; F02M41/08; F02M41/14; F02M41/1405; F02M41/1411
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A FUEL PUMP COMPRISING A CASING HAVING INLET AND OUTLET PASSAGES, A BORE IN SAID CASING HAVING ENLARGED COUNTERBORES AT EACH END THEREOF, A FUEL DISTRIBUTING ROTOR POSITIONED IN SAID BORE AND HAVING FUEL INLET PORT MEANS ADAPTED TO COMMUNICATE WIHT SAID INLET PASSAGE AND OUTLET PORT MEANS ADAPTED TO COMMUNICATE IN SEQUENCE DURING THE ROTATION OF SAID ROTOR WIHT THE OUTLET PASSAGES OF SAID CASING TO PERMIT ALTERNATE ADMISSION AND DISCHARGE OF FUEL FROM THE INTERIOR OF SAID ROTOR, A TRANSFER PUMP HAVING A HUB OF GREATER DIAMETER THAN SAID BORE INTEGRALLY FORMED ON ONE END OF SAID ROTOR, AND A CHARGE PUMP HAVING A CARRIER OF GREATER DIAMETER THAN SAID BORE ON THE OTHER END OF SAID ROTOR, SAID CARRIER PROVIDING RADIALLY ALIGNED PASSAGEWAYS FORMING CYLINDERS IN WHICH A PAIR OF PISTONS ARE SLIDABLY RECEIVED, SAID CARRIER FURTHER BEING APERTURED AND BEING POSITIONED ABOUT AN END OF SAID ROTOR AND NON-ROTATABLY SECURED THERETO WITH AN INTERFERENCE FIT.
Claim 2
Dependent Claim
159 words
A FUEL PUMP COMPRISING A CASING HAVING INLET AND OUTLET PASSAGES, A BORE IN SAID CASING HAVING ENLARGED COUNTERBORES AT EACH END THEREOF, A FUEL DISTRIBUTING ROTOR POSITIONED IN SAID BORE AND HAVING FUEL INLET PORT MEANS ADAPTED TO COMMUNICATE WIHT SAID INLET PASSAGE AND OUTLET PORT MEANS ADAPTED TO COMMUNICATE IN SEQUENCE DURING THE ROTATION OF SAID ROTOR WIHT THE OUTLET PASSAGES OF SAID CASING TO PERMIT ALTERNATE ADMISSION AND DISCHARGE OF FUEL FROM THE INTERIOR OF SAID ROTOR, A TRANSFER PUMP HAVING A HUB OF GREATER DIAMETER THAN SAID BORE INTEGRALLY FORMED ON ONE END OF SAID ROTOR, AND A CHARGE PUMP HAVING A CARRIER OF GREATER DIAMETER THAN SAID BORE ON THE OTHER END OF SAID ROTOR, SAID CARRIER PROVIDING RADIALLY ALIGNED PASSAGEWAYS FORMING CYLINDERS IN WHICH A PAIR OF PISTONS ARE SLIDABLY RECEIVED, SAID CARRIER FURTHER BEING APERTURED AND BEING POSITIONED ABOUT AN END OF SAID ROTOR AND NON-ROTATABLY SECURED THERETO WITH AN INTERFERENCE FIT.
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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |