| 摘要 |
The device herein described is an automatic hydraulic transmission characterized by a minimum of servo-control apparatus. The provision hereof contemplates the extension of the torque multiplying range of a given hydrodynamic (or hydrostatic) unit by means of a fluid driven member thereof variably, differentially and continuously underdriving and overdriving the transmission's output shaft through a series of gear set-ups, in such manner that the speed ratio between fluid driven and driving members of said hydrodynamic unit is continuously varied along with the transmission's speed ratio throughout its operating range.
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