Patent DE701435C successfully refreshed from Google Patents.
Patent US3204561A successfully refreshed from Google Patents.
US3204561A
Expired / Lapsed
US
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Fuel pump
Assignee: HARTFORD MACHINE SCREW CO
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Filing: 1962-09-10
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Granted: 1965-09-07
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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
2026-10-27 20:48
CPC Classifications
F; F02; F02M; F02M59/00; F02M59/44; F02M59/46; F02M41/00; F02M41/08; F02M41/14; F02M41/1405; F02M41/1411
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
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 OUTLET PORT MEANS ADAPTED TO COMMUNICATE IN SEQUENCE DURING THE ROTATION OF SAID ROTOR WITH SAID OUTLET PASAGES OF SAID CASING TO PERMIT ALTERNATE ADMISSION AND DISCHARGE OF FUEL FROM THE INTERIOR OF SAID ROTOR, PISTON MEANS CARRIED BY SAID ROTOR AND OPERABLE IN RESPONSE TO THE ROTATION THEREOF TO RECEIVE FUEL FROM THE INLET PORT MEANS AND TO EJECT FUEL TO SAID OUTLET PORT MEANS, AND MEANS CARRIED BY SAID ROTOR AND POSITIONED BETWEEN SAID INLET PORT MEANS AND SAID PISTON MEANS TO PREVENT THE REVERSE FLOW OF FUEL THERETHROUGH.
Claim 2
Dependent Claim
129 words
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 OUTLET PORT MEANS ADAPTED TO COMMUNICATE IN SEQUENCE DURING THE ROTATION OF SAID ROTOR WITH SAID OUTLET PASAGES OF SAID CASING TO PERMIT ALTERNATE ADMISSION AND DISCHARGE OF FUEL FROM THE INTERIOR OF SAID ROTOR, PISTON MEANS CARRIED BY SAID ROTOR AND OPERABLE IN RESPONSE TO THE ROTATION THEREOF TO RECEIVE FUEL FROM THE INLET PORT MEANS AND TO EJECT FUEL TO SAID OUTLET PORT MEANS, AND MEANS CARRIED BY SAID ROTOR AND POSITIONED BETWEEN SAID INLET PORT MEANS AND SAID PISTON MEANS TO PREVENT THE REVERSE FLOW OF FUEL THERETHROUGH.
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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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |