Power plants – Pressure fluid source and motor – Input pump and rotary output motor system having...
Patent
1995-01-18
1996-03-12
Look, Edward K.
Power plants
Pressure fluid source and motor
Input pump and rotary output motor system having...
92 122, 92 57, 92 71, 417269, F16D 3900
Patent
active
054976235
ABSTRACT:
An improved hydrostatic transmission which is compact, reliable and economical to manufacture, including a novel apparatus for reducing the speed of the input to the transaxle using both hydraulics and mechanical gearing; an improved differential which is stronger and less complicated than prior art designs; a more effective and efficient apparatus for braking the transaxle, an improved apparatus for hydraulically bypassing the hydrostatic transmission and a unique check valve arrangement for maintaining oil pressure within the hydrostatic transmission. Also, an apparatus is provided for diverting the hydraulic fluid to a sump by lifting a cylinder block from a running surface of the hydrostatic transmission to quickly drain the fluid.
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Hauser Ray M.
Johnson Alan W.
Browne Robert E.
Hydro-Gear Limited Partnership
Look Edward K.
McDonough Thomas C.
Nguyen Hoang
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