Power plants – Pressure fluid source and motor – Input pump and rotary output motor system having...
Patent
1987-12-09
1990-07-31
Look, Edward K.
Power plants
Pressure fluid source and motor
Input pump and rotary output motor system having...
60487, 91499, 184 617, F01B 1304, F16D 3700
Patent
active
049441540
ABSTRACT:
A hydraulically operated continuously variable transmission includes a hydraulic motor coupled to an output shaft and having a motor swash plate and a motor cylinder supporting an annular array of slidable motor plungers held in slidable contact with the motor swash plate, a distribution member integral with the motor cylinder, a hydraulic pump coupled to an input shaft in sliding contact with the distribution member and having a pump swash plate movable with the motor cylinder and a pump cylinder supporting an annular array of slidable pump plungers held in slidable contact with the pump swash plate, a closed hydraulic circuit interconnecting the hydraulic pump and the hydraulic motor, the pump cylinder being coaxially surrounded by the motor cylinder with a hydraulically hermetic chamber defined therebetween, and a replenishing pump operatively coupled to the input shaft and connected to the closed hydraulic circuit through a replenishing oil passage. The replenishing oil passage partly extends in the distribution member, and the distribution member has an oil passage defined therein and interconnecting the replenishing oil passage and the hydraulically hermetic chamber. A relief valve is disposed in the oil passage in the distribution chamber, the relief valve being openable when the pressure of oil in the replenishing oil passage exceeds a prescribed level.
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Furumoto Mitsumasa
Ikejiri Kenichi
Kawahara Eiichiro
Yamamoto Noboru
Honda Giken Kogyo Kabushiki Kaisha
Look Edward K.
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