Patent US3196800A successfully refreshed from Google Patents.
US3196800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear pump
Assignee: Parker Hannifin Corp
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Filing: 1962-12-13
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Granted: 1965-07-27
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Expires: 1982-12-13
Abstract
No abstract record available.
Inventors
- 👤 James F Hoffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:26
CPC Classifications
F; F04; F04C; F04C15/00; F04C15/0003; F04C15/0023; F04C15/0026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PUMP COMPRISING A HOUSING, FIRST AND SECOND PLATES WITHIN SAID HOUSING AND HAVING OPPOSED RECESSES THEREIN FORMING A PUMPING CHAMBER, MEANS SUPPORTING SAID PLATES IN SAID HOUSING, AT LEAST ONE OF SAID PLATES BEING AXIALLY MOVABLE RELATIVE TO THE OTHER, INLET AND OUTLET PASSAGES IN COMMUNICATION WITH SAID PUMPING CHAMBER, ROTARY PUMPING MEANS IN SAID PUMPING CHAMBER OPERATIVE WHEN ROTATED FOR FOCING FLUID FROM SAID INLET PASSAGE TO SAID OUTLET PASSAGE, AND FLUID FROM SAID INLET FOCING SAID ONE OF SAID PLATES AXIALLY TOWARD THE OTHER.
Claim 2
Dependent Claim
87 words
A PUMP COMPRISING A HOUSING, FIRST AND SECOND PLATES WITHIN SAID HOUSING AND HAVING OPPOSED RECESSES THEREIN FORMING A PUMPING CHAMBER, MEANS SUPPORTING SAID PLATES IN SAID HOUSING, AT LEAST ONE OF SAID PLATES BEING AXIALLY MOVABLE RELATIVE TO THE OTHER, INLET AND OUTLET PASSAGES IN COMMUNICATION WITH SAID PUMPING CHAMBER, ROTARY PUMPING MEANS IN SAID PUMPING CHAMBER OPERATIVE WHEN ROTATED FOR FOCING FLUID FROM SAID INLET PASSAGE TO SAID OUTLET PASSAGE, AND FLUID FROM SAID INLET FOCING SAID ONE OF SAID PLATES AXIALLY TOWARD THE OTHER.
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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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |