US3076413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure aircraft gear pump
Assignee: Parker Hannifin Corp
•
Filing: 1959-12-29
•
Granted: 1963-02-05
•
Expires: 1979-12-29
Abstract
No abstract record available.
Inventors
- 👤 James F Hoffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:51
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/082; F04C2/086; B; B64; B64D; B64D37/00; B64D37/02; B64D37/14; B64D37/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
IN A ROTARY GEAR PUMP, A CASING HAVING A SIDE WALL AND END CLOSURES THEREFOR, SAID CASING HAVING A FLUID INLET AND A FLUID OUTLET THROUGH ONE OF SAID END CLOSURES, A CARTRIDGE WITHIN SAID CASING AND INCLUDING A BODY CONTAINING PUMPING GEARS, SAID CARTRIDGE BODY AND CASING HAVING PORTIONS COACTING IN FORMING SPACES BETWEEN THE ENDS OF SAID CARTRIDGE BODY AND SAID END CLOSURES, SAID CARTRIDGE BODY HAVING A LONGITUDINAL FLUID CONDUCTING INLET PASSAGE FOR CONDUCTING FLUID TO SAID PUMPING GEARS, SAID FLUID CONDUCTING INLET PASSAGE EXTENDING UNRESTRICTIVELY FROM END TO END OF SAID CARTRIDGE BODY AND HAVING ONE OF ITS ENDS IN COMMUNICATION WITH SAID FLUID INLET, BOTH ENDS OF SAID FLUID CONDUCTING PASSAGE BEING ALSO IN CONSTANT COMMUNICATION WITH THE AFORESAID SPACES.
Claim 2
Dependent Claim
125 words
IN A ROTARY GEAR PUMP, A CASING HAVING A SIDE WALL AND END CLOSURES THEREFOR, SAID CASING HAVING A FLUID INLET AND A FLUID OUTLET THROUGH ONE OF SAID END CLOSURES, A CARTRIDGE WITHIN SAID CASING AND INCLUDING A BODY CONTAINING PUMPING GEARS, SAID CARTRIDGE BODY AND CASING HAVING PORTIONS COACTING IN FORMING SPACES BETWEEN THE ENDS OF SAID CARTRIDGE BODY AND SAID END CLOSURES, SAID CARTRIDGE BODY HAVING A LONGITUDINAL FLUID CONDUCTING INLET PASSAGE FOR CONDUCTING FLUID TO SAID PUMPING GEARS, SAID FLUID CONDUCTING INLET PASSAGE EXTENDING UNRESTRICTIVELY FROM END TO END OF SAID CARTRIDGE BODY AND HAVING ONE OF ITS ENDS IN COMMUNICATION WITH SAID FLUID INLET, BOTH ENDS OF SAID FLUID CONDUCTING PASSAGE BEING ALSO IN CONSTANT COMMUNICATION WITH THE AFORESAID SPACES.
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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) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |