Planetary gear transmission systems or components – Steering by driving – With infinitely variable drive
Patent
1989-12-26
1991-03-05
Diehl, Dwight
Planetary gear transmission systems or components
Steering by driving
With infinitely variable drive
475 72, F16H 3706
Patent
active
049974122
ABSTRACT:
An infinitely variable speed hydromechanical steering transmission includes a range-changing mechanism flanked by a pair of hydrostatic units which are commonly driven by a mechanical input to produce respective mechanical and hydrostatic outputs. These outputs are combined in left and right output planetary gear sets which are interconnected by a cross-shaft extending centrally through the range-changing mechanism and hydrostatic units. The range-changing mechanism includes a plurality of clutches and brakes that are selectively engaged in pairs to incrementally change the mechanical output speed on the cross-shaft and thus to operate the transmission in a plurality of forward and reverse speed ranges. Each range change is accomplished by a step change in the hydrostatic outputs.
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Cahill Robert A.
Diehl Dwight
General Electric Company
Kuch Bailin L.
Wittels Daniel
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