US3271955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power transmission
Assignee: Unisys Corp
•
Filing: 1965-04-12
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Granted: 1966-09-13
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Expires: 1985-04-12
Abstract
No abstract record available.
Inventors
- 👤 Werner G Holzbock
- 👤 Carel J Mali
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:48
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/4157; F16H61/42; F16H61/46; F16H61/472
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
IN A HYDRAULIC TRANSMISSION FOR CONTROLLING THE ACCELERATION OF A FLUID MOTOR, THE COMBINATION OF: A PUMP CONNECTED TO SAID MOTOR AND HAVING A POWER OPERATED DISPLACEMENT VARYING MECHANISM; CONTROL MEANS FOR REGULATING SAID POWER OPERATED DISPLACEMENT VARYING MECHANISM, SAID CONTROL MEANS HAVING A NEUTRAL POSITION FROM WHICH IT IS MOVABLE TO ACCOMPLISH REGULATION; AN INPUT MEMBER CONNECTED TO SAID CONTROL MEANS AND CAPABLE OF VARYING DEGREES OF MOVEMENT; A MOVABLE, PRESSURE DIFFERENTIAL RESPONSIVE FEEDBACK DEVICE CONNECTED TO SAID CONTROL MEANS, SAID DEVICE PRODUCING A MOVEMENT PROPORTIONAL IN MAGNITUDE TO THE APPLIED PRESSURE DIFFERENTIAL; AND MEANS FOR APPLYING THE PRESSURE DIFFERENTIAL EXISTING ACROSS SAID MOTOR TO SAID FEEDBACK DEVICE.
Claim 2
Dependent Claim
109 words
IN A HYDRAULIC TRANSMISSION FOR CONTROLLING THE ACCELERATION OF A FLUID MOTOR, THE COMBINATION OF: A PUMP CONNECTED TO SAID MOTOR AND HAVING A POWER OPERATED DISPLACEMENT VARYING MECHANISM; CONTROL MEANS FOR REGULATING SAID POWER OPERATED DISPLACEMENT VARYING MECHANISM, SAID CONTROL MEANS HAVING A NEUTRAL POSITION FROM WHICH IT IS MOVABLE TO ACCOMPLISH REGULATION; AN INPUT MEMBER CONNECTED TO SAID CONTROL MEANS AND CAPABLE OF VARYING DEGREES OF MOVEMENT; A MOVABLE, PRESSURE DIFFERENTIAL RESPONSIVE FEEDBACK DEVICE CONNECTED TO SAID CONTROL MEANS, SAID DEVICE PRODUCING A MOVEMENT PROPORTIONAL IN MAGNITUDE TO THE APPLIED PRESSURE DIFFERENTIAL; AND MEANS FOR APPLYING THE PRESSURE DIFFERENTIAL EXISTING ACROSS SAID MOTOR TO SAID FEEDBACK DEVICE.
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |