Patent US3157998A successfully refreshed from Google Patents.
US3157998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrostatic transmission control
Assignee: Ford Motor Co
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Filing: 1963-02-28
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Granted: 1964-11-24
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Expires: 1983-02-28
Abstract
No abstract record available.
Inventors
- 👤 Harris Dennis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:49
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/42; F16H61/423; F16H39/00; F16H39/04; F16H39/06; F16H39/08; F16H39/10; F16H61/433
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
57 words
A FLUID PRESSURE OPERATED SERVO SYSTEM, INCLUDING SERVO MEANS, CONDUIT MEANS CONNECTED TO SAID SERVO MEANS AND CONTAINING FLUID UNDER PRESSURE, VALVE MEANS IN SAID CONDUIT MEANS MOVABLE TO PREDETERMINED POSITIONS FOR DIRECTING THE FLUID TO DIFFERENT PORTIONS OF SAID SERVO MEANS, OTHER MEANS FOR MOVING SAID VALVE MEANS, AND EXTENDABLE FORCE TRANSMITTING MEANS BETWEEN SAID OTHER
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |