Hydraulic control apparatus

Details Hydraulic control apparatus Hydraulic control apparatus

1977-11-03

1980-02-05

Michalsky, Gerald A.

Fluid handling

Systems

Supply and exhaust

91527, 251129, 251337, F15B 1306

Patent

active

041867718

ABSTRACT:
An apparatus for controlling the hydraulic system of hydraulic actuators, such as hydraulic cylinders. The apparatus is constituted only by a combination of two kinds of control valves in that normally opened and normally closed, solenoid-operated, spring-returned type control valves are serially connected together through a common port formed in each control valve.

REFERENCES:
patent: 2436992 (1948-03-01), Ernst
patent: 3429552 (1969-02-01), Huley et al.
patent: 3793831 (1974-02-01), Khatti

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