Power plants – Pressure fluid source and motor – Input pump and rotary output motor system having...
Patent
1987-06-30
1988-05-24
Look, Edward K.
Power plants
Pressure fluid source and motor
Input pump and rotary output motor system having...
91506, F16D 3900
Patent
active
047457481
ABSTRACT:
A clutch valve system for use in a static hydraulic continuously variable transmission in which a hydraulic closed circuit is formed between a swashplate type hydraulic pump and a swashplate type hydraulic motor, wherein a first annular oil chamber and a second annular oil chamber are concentrically defined in the pump cylinder adjacent to annularly arranged cylinder bores of a pump cylinder in the hydraulic pump, the first oil chamber being adapted to be connected to the cylinder bores which are in a discharge stroke and the second oil chamber being adapted to be connected to the cylinder bores which are in a suction stroke; a plurality of clutch valves are radially arranged in the pump cylinder for providing the communication or discommunication between both the oil chambers by the radial movement thereof; and a clutch control ring engaged with the clutch valves for relative rotation therebetween so as to surround these clutch valves is pivoted on a fixing structure for pivotal movement between a clutch ON position in which it brings all the clutch valves into a closed state in the diametrical direction of the pump cylinder and a clutch OFF position in which it brings some of the clutch valves into an opened state.
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Hayashi Tsutomu
Ito Kazuhito
Saito Mitsuru
Yoshida Yoshihiro
Honda Giken Kogyo Kabushiki Kaisha
Look Edward K.
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