Patent US3295388A successfully refreshed from Google Patents.
US3295388A
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Transmission control
Assignee: Motors Liquidation Co
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Filing: 1963-09-05
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Granted: 1967-01-03
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Expires: 1983-09-05
Abstract
No abstract record available.
Inventors
- 👤 Ronald C Groves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:09
CPC Classifications
F; F16; F16H; F16H59/00; F16H59/14; F16H59/26; F16H59/30; Y; Y10; Y10S; Y10S74/00; Y10S74/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
IN A TRANSMISSION CONTROL SYSTEM FOR AN ENGINE DRIVEN VEHICLE TRANSMISSION THE COMBINATION OF (A) MEANS PROVIDING A REGULATED FLUID PRESSURE SOURCE, (B) PRESSURE CONTROL MEANS CONNECTED TO SAID REGULATED FLUID PRESSURE SOURCE AND ADAPTED TO SUPPLY A VARIABLE CONTROL PRESSURE, (C) AND MODULATOR MEANS CONTROLLING SAID PRESSURE CONTROL MEANS INCLUDING FIRST MOTOR MEANS HAVING A CONSTANT REFERENCE PRESSURE AND RESPONSIVE TO THE DIFFERENCES IN PRESSURE BETWEEN AMBIENT ATMOSPHERIC PRESSURE AND SAID CONSTANT REFERENCE PRESSURE TO PROVIDE A LARGE VARIABLE FORCE TO CONTROL SAID PRESSURE CONTROL MEANS, AND SECOND MOTOR MEANS CONNECTED TO AN ENGINE VACUUM SOURCE REFLECTIVE OF ENGINE TORQUE AND RESPONSIVE TO THE DIFFERENCES IN PRESSURE BETWEEN AMBIENT ATMOSPHERIC PRESSURE AND ENGINE VACUUM TO PROVIDE A SMALL VARIABLE FORCE TO CONTROL SAID PRESSURE CONTROL MEANS TO PROVIDE A CONTROL PRESSURE REFLECTIVE OF ENGINE TORQUE AS A FUNCTION OF ENGINE VACUUM AND CORRECT FOR CHANGES IN ENGINE VACUUM RESULTING FROM CHANGES IN AMBIENT ATMOSPHERIC PRESSURE.
Claim 2
Dependent Claim
156 words
IN A TRANSMISSION CONTROL SYSTEM FOR AN ENGINE DRIVEN VEHICLE TRANSMISSION THE COMBINATION OF (A) MEANS PROVIDING A REGULATED FLUID PRESSURE SOURCE, (B) PRESSURE CONTROL MEANS CONNECTED TO SAID REGULATED FLUID PRESSURE SOURCE AND ADAPTED TO SUPPLY A VARIABLE CONTROL PRESSURE, (C) AND MODULATOR MEANS CONTROLLING SAID PRESSURE CONTROL MEANS INCLUDING FIRST MOTOR MEANS HAVING A CONSTANT REFERENCE PRESSURE AND RESPONSIVE TO THE DIFFERENCES IN PRESSURE BETWEEN AMBIENT ATMOSPHERIC PRESSURE AND SAID CONSTANT REFERENCE PRESSURE TO PROVIDE A LARGE VARIABLE FORCE TO CONTROL SAID PRESSURE CONTROL MEANS, AND SECOND MOTOR MEANS CONNECTED TO AN ENGINE VACUUM SOURCE REFLECTIVE OF ENGINE TORQUE AND RESPONSIVE TO THE DIFFERENCES IN PRESSURE BETWEEN AMBIENT ATMOSPHERIC PRESSURE AND ENGINE VACUUM TO PROVIDE A SMALL VARIABLE FORCE TO CONTROL SAID PRESSURE CONTROL MEANS TO PROVIDE A CONTROL PRESSURE REFLECTIVE OF ENGINE TORQUE AS A FUNCTION OF ENGINE VACUUM AND CORRECT FOR CHANGES IN ENGINE VACUUM RESULTING FROM CHANGES IN AMBIENT ATMOSPHERIC PRESSURE.
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |