US3194017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrostatic transmission
Assignee: New York Air Brake LLC
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Filing: 1963-12-11
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Granted: 1965-07-13
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Expires: 1983-12-11
Abstract
No abstract record available.
Inventors
- 👤 Charles O Weisenbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:26
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/42; B; B62; B62D; B62D11/00; B62D11/02; B62D11/06; B62D11/10; B62D11/14; B62D11/18; B62D11/183; F16H61/423; F16H61/433; B60; B60K; B60K5/00; B60K5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A HYDROSTATIC TRANSMISSION INCLUDING (A) TWO VARIABLE DISPLACEMENT PUMP-MOTOR UNITS EITHER OF WHICH MAY SERVE AS A PUMP WHILE THE OTHER SERVES AS A MOTOR; (B) A PAIR OF MAIN CONDUITS CONNECTING THE TWO UNITS IN A CLOSED TRANSMISSION CIRCUIT; AND (C) CONTROL MEANS FOR VARYING THE DISPLACEMENT OF THE FIRST UNIT IN INVERSE RELATION TO ITS DISCHARGE PRESSURE AND FOR CAUSING THE SECOND UNIT TO OPERATE AT MAXIMUM DISPLACEMENT WHEN THE FIRST UNIT IS PUMPING, AND FOR VARYING THE DISPLACEMENT OF THE SECOND UNIT IN INVERSE RELATION TO ITS DISCHARGE PRESSURE AND FOR CAUSING THE FIRST UNIT TO OPERATE AT MAXIMUM DISPLACEMENT WHEN THE SECOND UNIT IS PUMPING.
Claim 2
Dependent Claim
109 words
A HYDROSTATIC TRANSMISSION INCLUDING (A) TWO VARIABLE DISPLACEMENT PUMP-MOTOR UNITS EITHER OF WHICH MAY SERVE AS A PUMP WHILE THE OTHER SERVES AS A MOTOR; (B) A PAIR OF MAIN CONDUITS CONNECTING THE TWO UNITS IN A CLOSED TRANSMISSION CIRCUIT; AND (C) CONTROL MEANS FOR VARYING THE DISPLACEMENT OF THE FIRST UNIT IN INVERSE RELATION TO ITS DISCHARGE PRESSURE AND FOR CAUSING THE SECOND UNIT TO OPERATE AT MAXIMUM DISPLACEMENT WHEN THE FIRST UNIT IS PUMPING, AND FOR VARYING THE DISPLACEMENT OF THE SECOND UNIT IN INVERSE RELATION TO ITS DISCHARGE PRESSURE AND FOR CAUSING THE FIRST UNIT TO OPERATE AT MAXIMUM DISPLACEMENT WHEN THE SECOND UNIT IS PUMPING.
References Cited (Backward Citations)
US2941365A
Cited
US2942421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |