Motors: expansible chamber type – With motive fluid valve – Relatively movable serial valves
Patent
1993-07-09
1994-12-27
Look, Edward K.
Motors: expansible chamber type
With motive fluid valve
Relatively movable serial valves
91454, 91459, 60547, 60581, F15B 1108, B60T 1300
Patent
active
053755065
ABSTRACT:
A hydraulic pressure control apparatus comprising: an introducing valve provided on a supply duct connecting to each other a hydraulic source and a control chamber for controlling a fluid-operated equipment or increasing or decreasing the hydraulic pressure of the fluid-operated equipment; and a discharge valve provided on a discharge duct discharging hydraulic fluid from the fluid-operated equipment or the control chamber. The introducing valve and/or the discharge valve are disposed in series on the supply duct or the discharge duct; at least one of a plurality of the introducing valves and/or the discharge valves consists of a flow rate-variable valve capable of changing the flow rate of the hydraulic fluid continuously according to the intensity of electric current; and the other introducing valves and/or discharge valves consist of electromagnetic change-over valves fully opened or fully closed.
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English Language Abstract of Japanese Laid-Open Publication No. 63-61,671. Mar. 1988.
Hashida Koichi
Yoshino Masato
Look Edward K.
Nguyen Hoang
Sumitomo Electric Industries Ltd.
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