Planetary gear transmission systems or components – With means to vary drive ratio or disconnect drive – Plural elements selectively braked
Patent
1993-05-11
1994-08-02
Braun, Leslie A.
Planetary gear transmission systems or components
With means to vary drive ratio or disconnect drive
Plural elements selectively braked
475278, 475285, F16H 300
Patent
active
053341171
ABSTRACT:
An automatic transmission includes first and second multi-step or speed transmissions mounted in parallel with each other with respect to a transmission shaft. The multi-step or speed transmissions are operationally coupled by a counter gear for transmitting engine torque from the first multi-step or speed transmission to the second multi-transmission. An extension unit having friction clutch elements is detachably coupled to the first multi-step or speed transmission for changing a transmission path of the engine torque through it. The number of shiftable gear ratios of the automatic transmission, therefore, can be increased.
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Braun Leslie A.
Mazda Motor Corporation
Ta Khoi Q.
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