Hydraulic control valve with manual override

Details Hydraulic control valve with manual override Hydraulic control valve with manual override

1985-08-30

1986-12-09

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

74491, 74625, 13762564, 251 14, F15B 13043

Patent

active

046274685

ABSTRACT:
A manual override handle assembly for the operation of a hydraulic control valve of the type having a movable spool includes a housing forming a hollow chamber in which a spool extension is slidably mounted. A handle assembly extends outwardly from the housing and is mounted for pivotal movement within the chamber. The handle is movable to an inoperable position wherein the handle is disassociated from the spool extension so that movement of the spool extension will not result in movement of the handle. The handle is further movable to an operable position wherein the handle engages the spool extension so that movement of the handle results in movement of the spool extension.

REFERENCES:
patent: 3434390 (1969-03-01), Weiss
patent: 4011891 (1977-03-01), Knutson et al.
patent: 4185660 (1980-01-01), Faix
patent: 4240304 (1980-12-01), Griffiths
patent: 4285496 (1981-08-01), Coles

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