Patent US1869875A successfully refreshed from Google Patents.
Patent US3236117A successfully refreshed from Google Patents.
US3236117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic transmission for automotive vehicle
Assignee: Motors Liquidation Co
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Filing: 1958-09-10
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Granted: 1966-02-22
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Expires: 1978-09-10
Abstract
No abstract record available.
Inventors
- 👤 Howard W Christenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:23
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/06; F16H47/08; B; B60; B60K; B60K2704/00; B60K2704/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
197 words
IN A MECHANISM FOR THE TRANSMISSION OF TORQUE FROM AN ENGINE HAVING A THROTTLE, THE COMBINATION OF A DRIVING MEMBER, A DRIVEN MEMBER, A FRONT PLANETARY GEAR SET CONNECTED TO THE DRIVING MEMBER, A REAR PLANETARY GEAR SET CONNECTED WITH THE DRIVEN MEMBER, THE OUTPUT MEMBER OF THE FRONT SET BEING THE INPUT MEMBER OF THE REAR SET, TWO FRICTION ENGAGING DEVICES INTERRELATED WITH THE FRONT GEAR SET AND SELECTIVELY ENGAGEABLE TO CONDITION THE FRONT SET TO TRANSMIT TORQUE AT RELATIVELY HIGH AND RELATIVELY LOW RATIOS AND TO CAUSE A SHIFT IN SAID CONDITION, TWO FRICTION ENGAGING DEVICES INTERRELATED WITH THE REAR GEAR SET AND SELECTIVELY ENGAGEABLE TO CONDITION THE REAR SET TO TRANSMIT TORQUE AT RELATIVELY HIGH AND RELATIVELY LOW RATIOS AND TO CAUSE A SHIFT IN SAID CONDITION, HYDRAULIC MOTORS, OPERABLE TO CAUSE ENGAGEMENT AND DISENGAGEMENT OF THE FRICTION DEVICES, A HYDRAULIC SYSTEM INCLUDING PRESSURE LINES LEADING TO THE MOTORS, AN ENGINE THROTTLE CONTROLLED MEMBER, CONTROLLING VALVES IN THE SYSTEM INCLUDING A SHIFT VALVE FOR THE FRONT GEAR SET, A SHIFT VALVE FOR THE REAR GEAR SET, A VALVE OPERABLE BY THE THROTTLE CONTROLLED MEMBER, MEANS INCLUDING A PORT IN THE THROTTLE OPERATED VALVE CON-
Claim 2
Dependent Claim
197 words
IN A MECHANISM FOR THE TRANSMISSION OF TORQUE FROM AN ENGINE HAVING A THROTTLE, THE COMBINATION OF A DRIVING MEMBER, A DRIVEN MEMBER, A FRONT PLANETARY GEAR SET CONNECTED TO THE DRIVING MEMBER, A REAR PLANETARY GEAR SET CONNECTED WITH THE DRIVEN MEMBER, THE OUTPUT MEMBER OF THE FRONT SET BEING THE INPUT MEMBER OF THE REAR SET, TWO FRICTION ENGAGING DEVICES INTERRELATED WITH THE FRONT GEAR SET AND SELECTIVELY ENGAGEABLE TO CONDITION THE FRONT SET TO TRANSMIT TORQUE AT RELATIVELY HIGH AND RELATIVELY LOW RATIOS AND TO CAUSE A SHIFT IN SAID CONDITION, TWO FRICTION ENGAGING DEVICES INTERRELATED WITH THE REAR GEAR SET AND SELECTIVELY ENGAGEABLE TO CONDITION THE REAR SET TO TRANSMIT TORQUE AT RELATIVELY HIGH AND RELATIVELY LOW RATIOS AND TO CAUSE A SHIFT IN SAID CONDITION, HYDRAULIC MOTORS, OPERABLE TO CAUSE ENGAGEMENT AND DISENGAGEMENT OF THE FRICTION DEVICES, A HYDRAULIC SYSTEM INCLUDING PRESSURE LINES LEADING TO THE MOTORS, AN ENGINE THROTTLE CONTROLLED MEMBER, CONTROLLING VALVES IN THE SYSTEM INCLUDING A SHIFT VALVE FOR THE FRONT GEAR SET, A SHIFT VALVE FOR THE REAR GEAR SET, A VALVE OPERABLE BY THE THROTTLE CONTROLLED MEMBER, MEANS INCLUDING A PORT IN THE THROTTLE OPERATED VALVE CON-
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |