| 摘要 |
An apparatus for transmitting torque from a prime mover to a load includes an input planetary gear unit adapted to be connected drivingly to the output of the prime mover, and an output planetary gear unit coupled to the input unit and adapted to be connected drivingly to the input of the load. A reaction member connects rigidly the output planet gears of the output planetary gear unit and one of the input sun gears of the input unit for causing the input planetary gears of the input unit to orbit about the input planet gears, whereby the input unit serves to unload the prime mover to enable it to operate more efficiently.
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