Patent US2956798A successfully refreshed from Google Patents.
Patent US3171256A successfully refreshed from Google Patents.
US3171256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrostatic transmission
Assignee: Individual
•
Filing: 1963-01-03
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Granted: 1965-03-02
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Expires: 1983-01-03
Abstract
No abstract record available.
Inventors
- 👤 John A Lauck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:27
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/4043; F16H39/00; F16H39/04; F16H39/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A HYDROSTATIC TRANSMISSION COMPRISING A FLUID PUMP, SAID PUMP INCLUDING A VALVING PINTLE AND A ROTOR MOUNTED FOR ROTATION ABOUT AID PINTLE, A MOTOR DRIVEN BY THE OUTPUT OF SAID PUMP, AND FLUID PRESSURE MEANS OPERATIVE SEALINGLY TO SEAT SAID PINTLE WITHIN SAID ROTOR EFFECTIVELY TO PREVENT FLUID LEAKAGE BETWEEN SAID ROTOR AND PINTLE.
Claim 2
Dependent Claim
54 words
A HYDROSTATIC TRANSMISSION COMPRISING A FLUID PUMP, SAID PUMP INCLUDING A VALVING PINTLE AND A ROTOR MOUNTED FOR ROTATION ABOUT AID PINTLE, A MOTOR DRIVEN BY THE OUTPUT OF SAID PUMP, AND FLUID PRESSURE MEANS OPERATIVE SEALINGLY TO SEAT SAID PINTLE WITHIN SAID ROTOR EFFECTIVELY TO PREVENT FLUID LEAKAGE BETWEEN SAID ROTOR AND PINTLE.
References Cited (Backward Citations)
US2008687A
Cited
US2042480A
Cited
US2217172A
Cited
US2211402A
Cited
US2226481A
Cited
US2420806A
Cited
US2747515A
Cited
US3106108A
Cited
US3008423A
Cited
US3054263A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |