Machine element or mechanism – Elements – Gear casings
Patent
1987-12-02
1989-01-31
Wright, Dirk
Machine element or mechanism
Elements
Gear casings
74731, F16H 4708, F16H 4700
Patent
active
048007790
ABSTRACT:
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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