Hydrostatic differential transmission

Details Hydrostatic differential transmission Hydrostatic differential transmission

1994-11-22

1996-03-05

Lopez, F. Daniel

Power plants

Pressure fluid source and motor

Input pump and rotary output motor system having...

F16D 3900

Patent

active

054957133

ABSTRACT:
A hydrostatic differential transmission includes a pair of cylinder housings (58, 62) rotatably mounted for free rotation on coaxial input and output shafts, respectively, with a first pivotable swash plate (101) and second fixed swash plate (24b) fixed to the input and output shafts, respectively and a differential. An adjustable control selectively pivots the first swash plate between a neutral position, where the swash plate is at an angle to the input shaft equal to the angle of the second swash plate to the output shaft, and a direct drive position, where the swash plate is perpendicular to the input shaft. The differential includes a forward ring gear (32) fixed to the input shaft, a rearward ring gear (30) fixed to the output shaft and pinion gears (38, 40) between the forward and rearward ring gears. The pair of cylinder housings rotate together (via 36, 96) and have the pinion gears rotatably mounted thereto, for driving an auxiliary pump (48).

REFERENCES:
patent: 4075843 (1978-02-01), Leker
patent: 5052987 (1991-10-01), Hagin et al.
patent: 5054289 (1991-10-01), Nagatomo
patent: 5137100 (1992-08-01), Scott et al.
patent: 5137129 (1992-08-01), Fleming

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