Patent US3234726A successfully refreshed from Google Patents.
US3234726A
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US
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Electric override for pump
Assignee: Sundstrand Corp
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Filing: 1964-05-11
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Granted: 1966-02-15
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Expires: 1984-05-11
Abstract
No abstract record available.
Inventors
- 👤 Melvin M Hann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:01
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/46; B; B60; B60K; B60K17/00; B60K17/04; B60K17/10; F16H61/465
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
100 words
IN A HYDROSTATIC TRANSMISSION, A PUMP, A MOTOR, CONDUIT MEANS CONNECTING THE PUMP TO DELIVER FLUID UNDER PRESSURE TO THE MOTOR AND CONNECTING THE MOTOR TO RETURN FLUID TO THE PUMP, AN ENGINE FOR DRIVING THE PUMP, MEANS FOR VARYING THE DISPLACEMENT OF THE PUMP TO VARY THE TRANSMISSION OUTPUT, MANUALLY OPERABLE MEANS CONTROLLING THE DISPLACEMENT VARYING MEANS FOR SELECTIVELY VARYING DISPLACEMENT, AND AN OVERRIDE CONTROL INCLUDING MEANS FOR PRODUCING AN ELECTRIC SIGNAL IN RESPONSE TO AN INCREASED LOAD ON THE ENGINE, AND MEANS RESPONSIVE TO THE ELECTRIC SIGNAL FOR REDUCING PUMP DISPLACEMENT TO REDUCE THE LOAD ON THE ENGINE.
References Cited (Backward Citations)
US2393882A
Cited
US3065700A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |