Motors: expansible chamber type – With correlated control of motive fluid and locking means – Working member position control of motive fluid and locking...
Patent
1986-05-27
1988-11-22
Garrett, Robert E.
Motors: expansible chamber type
With correlated control of motive fluid and locking means
Working member position control of motive fluid and locking...
91 25, 91 42, 91 44, 91395, 91403, 91417R, 91393, 200 82B, H01H 3538, H01H 3330, F15B 13043, F15B 1517
Patent
active
047857129
ABSTRACT:
A hydraulic operating apparatus in which a differential piston is used as a drive unit, and in which the differential piston is driven by applying a high pressure fluid on a large piston face side through a hydraulic pressure control device for controlling the hydraulic pressure, and a high pressure fluid always being applied on the small piston face side. The hydraulic operating apparatus is constructed such that a high pressure fluid is applied concurrently on both piston faces when the differential piston stops at its receded position, and a thrust generated due to the difference between the forces applied on the both piston faces is held in check by a holding device acting on the differential piston or its extension. The differential piston is moved forward upon the removal of the holding force of the holding device, and the piston is moved backward upon the removal of the high pressure fluid on the large piston face side.
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Sugiyama Tsutomu
Yoshizumi Toshiaki
Garrett Robert E.
Kapsalas George
Mitsubishi Denki & Kabushiki Kaisha
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