Hydraulic selector valve having joy stick control

Details Hydraulic selector valve having joy stick control Hydraulic selector valve having joy stick control

1981-02-04

1983-12-20

Hershkovitz, Abraham

Fluid handling

With leakage or drip collecting

91522, 91465, 1376362, 137868, F16K 2900

Patent

active

044211350

ABSTRACT:
A manually operable hydraulic selector valve includes a plurality of two-way spool valves which are normally closed and are selectively shiftable individually or in pairs by a joy stick operator to open positions whereby motive fluid can be delivered to a given instrumentality such as the jack cylinder of a construction crane outrigger arm. The joy stick carries a conical disc which cammingly engages drive pin extensions of the individual spool valves. A positive stop for the conical disc is afforded by contact of the disc with the mounting plate of the selector valve. The selector valve is employed with an associated two-way directional control valve.

REFERENCES:
patent: 957286 (1910-05-01), Wilson
patent: 2580731 (1952-01-01), Cochin
patent: 2794609 (1957-06-01), Perry
patent: 2958233 (1960-11-01), Johnson
patent: 3589242 (1971-06-01), Peterson
patent: 3766944 (1973-10-01), Distler
patent: 3918496 (1975-11-01), Byers, Jr.
patent: 4080992 (1978-03-01), Niederer
patent: 4184512 (1980-01-01), Pignolet
patent: 4296773 (1981-10-01), Harshman

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