US3107490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of a hydrostatic transmission
Assignee: Ford Motor Co
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Filing: 1960-08-04
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Granted: 1963-10-22
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Expires: 1980-08-04
Abstract
No abstract record available.
Inventors
- 👤 Frederick D Cooper
- 👤 John P Creighton
- 👤 Eric J Banks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:17
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/42; F16H61/433; B; B62; B62D; B62D11/00; B62D11/02; B62D11/06; B62D11/10; B62D11/14; B62D11/18; B62D11/183; F16H61/423; F16H61/427; F16H61/437
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN A HYDROSTATIC TRANSMISSION, THE COMBINATION OF A VARIABLE DISPLACEMENT HYDRAULIC FLUID PRESSURE SOURCE, A VARIABLE DISPLACEMENT HYDRAULIC MOTOR INTERCONNECTED TO SAID PRESSURE SOURCE, AND A CONTROL SYSTEM COMPRISING A MOVABLE CONTROL LEVER, A ROTATABLE CAM MEANS OPERATIVELY CONNECTED TO SAID CONTROL LEVER, A SERVO MECHANISM, AND CONDUIT STRUCTURE HYDRAULICALLY INTERCONNECTED WITH SAID SERVO MECHANISM, SAID CONDUIT STRUCTURE BEING DEFINED IN PART BY A VALVE MEANS, SAID VALVE MEANS BEING MECHANICALLY CONNECTED TO SAID CAM MEANS, SAID CAM MEANS BEING ROTATED TO A PREDETERMINED POSITION UPON MOVEMENT OF SAID CONTROL LEVER, SAID CAM MEANS IN SAID PREDETERMINED POSITION VARYING THE FLUID PRESSURE IN SAID SERVO MECHANISM THROUGH SAID VALVE MEANS, SAID VARIATION OF FLUID PRESSURE IN SAID SERVO MECHANISM CONTROLLING THE DISPLACEMENT OF SAID FLUID PRESSURE SOURCE AND SAID HYDRAULIC MOTOR.
Claim 2
Dependent Claim
131 words
IN A HYDROSTATIC TRANSMISSION, THE COMBINATION OF A VARIABLE DISPLACEMENT HYDRAULIC FLUID PRESSURE SOURCE, A VARIABLE DISPLACEMENT HYDRAULIC MOTOR INTERCONNECTED TO SAID PRESSURE SOURCE, AND A CONTROL SYSTEM COMPRISING A MOVABLE CONTROL LEVER, A ROTATABLE CAM MEANS OPERATIVELY CONNECTED TO SAID CONTROL LEVER, A SERVO MECHANISM, AND CONDUIT STRUCTURE HYDRAULICALLY INTERCONNECTED WITH SAID SERVO MECHANISM, SAID CONDUIT STRUCTURE BEING DEFINED IN PART BY A VALVE MEANS, SAID VALVE MEANS BEING MECHANICALLY CONNECTED TO SAID CAM MEANS, SAID CAM MEANS BEING ROTATED TO A PREDETERMINED POSITION UPON MOVEMENT OF SAID CONTROL LEVER, SAID CAM MEANS IN SAID PREDETERMINED POSITION VARYING THE FLUID PRESSURE IN SAID SERVO MECHANISM THROUGH SAID VALVE MEANS, SAID VARIATION OF FLUID PRESSURE IN SAID SERVO MECHANISM CONTROLLING THE DISPLACEMENT OF SAID FLUID PRESSURE SOURCE AND SAID HYDRAULIC MOTOR.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-21 | 1967-04-22 | 1967-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-21 | 1971-04-22 | 1971-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-21 | 1975-04-22 | 1975-10-22 | $7700.00 | Window Closed / Lapsed |