High ratio coverage automatic transmission
Abstract
Abstract POWER TRANSMISSION COMPRISING A HYDRODYNAMIC TORQUE CONVERTER OPERATIVELY CONNECTED TO FIRST AND SECOND PLANETARY GEARSETS CONNECTED TO A PLURALITY OF FRICTION DRIVE ESTABLISHING DEVICES WHICH ARE ENGAGEABLE TO CONDITION THE GEARSETS FOR LOW, INTERMEDIATE, HIGH AND OVERDRIVE. IN THE PREFERRED EMBODIMENT FOR LOW SPEED RATIO, THE FIRST GEARSET IS CONDITIONED TO PRODUCE AN UNDERDRIVE BY THE AUTOMATIC ENGAGEMENT OF A ONE-WAY BRAKE WITH A FIRST SUN GEAR BEING DRIVEN. INTERMEDIATE RATIO IS OBTAINED BY ADDITIONAL CONDITIONING A SECOND ONE-WAY BRAKE TO HOLD A REACTION GEAR IN THE SECOND PLANETARY GEAR SET SO THAT GEAR SETS COMBINE TO INCREASE OUTPUT SPEED. IN DIRECT OR 1:1 RATIO THE DRIVE CAN BE ALL CONVERTER, ALL MECHANICAL OR SPLIT TORQUE. THERE IS A FRONT CLUTCH ENGAGED FOR THE ALL MECHANICAL AND THE SPLIT TORQUE DIRECT DRIVES. ALSO, THIS CLUTCH IS ENGAGED FOR A MECHANICAL OVERDRIVE WITHT HE GEARSETS AGAIN COMBINING.
Inventors
- 👤 Howard E Chana
Bibliographic Details
Claims Analysis
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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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |