Motors: expansible chamber type – Plural relatively movable or rigidly interconnected working... – Condition responsive means for modifying working member...
Patent
1983-11-14
1985-04-02
Maslousky, Paul E.
Motors: expansible chamber type
Plural relatively movable or rigidly interconnected working...
Condition responsive means for modifying working member...
91459, 280 6H, 280 61, 280DIG1, 251139, 251141, F15B 13044, F15B 1306
Patent
active
045080127
ABSTRACT:
In a high pressure hydraulic system a slave unit is supplied with fluid from a source through a control valve assembly. The assembly has a valve mechanism to control flow between ports communicating with the source and slave unit. The valve mechanism has two members, a first member controlling flow through the first port in response to a spring, a solenoid, and the pressure differential, the solenoid being unable to move the member against a significant pressure differential, and a second member controlling flow through the second port in dependence on the first member, the pressure differential and a spring. The first port has an elastomeric seal preventing leakage when the port is closed. The system has particular advantages when it is used as a vehicle suspension levelling system, in which an electronic control system controls the supply of fluid from an accumulator through a manifold and control valve assemblies to hydraulic suspension struts in accordance with ride height signals.
REFERENCES:
patent: 3071393 (1963-01-01), Valentine
patent: 3390892 (1968-07-01), Van Winsen et al.
patent: 3830138 (1974-08-01), Joneleit
patent: 4390188 (1983-06-01), Rouse
Reynolds Desmond H. J.
Taft Phillip A.
Lucas Industries Public Limited Company
Maslousky Paul E.
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