Overload relief valve

Details Overload relief valve Overload relief valve

1978-03-31

1980-02-12

Maslousky, Paul E.

Motors: expansible chamber type

Relatively movable working members with one having motive...

Moving cylinders

91186, 91514, F01B 100, F01B 1500, F15B 1116

Patent

active

041877632

ABSTRACT:
An overload relief valve for use in preventing damage to the hydraulic system for adjustably positioning a working element, such as a blade. A single relief valve permits relief of high fluid pressure developed in either of the control cylinders by providing a crossover function therebetween under such conditions, as well as to relieve the fluid to tank in the event of a high pressure condition existing in both cylinders concurrently. The crossover relief may be effected by a similar first preselected high pressure condition in either of the cylinders.

REFERENCES:
patent: 2270943 (1942-01-01), Freundel et al.
patent: 2825309 (1958-03-01), Geiger
patent: 3580274 (1971-05-01), Hansen
patent: 4023650 (1977-05-01), Pleier

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