Manually operable hydraulic control device with hydraulic positi

Details Manually operable hydraulic control device with hydraulic positi Manually operable hydraulic control device with hydraulic positi

1982-04-26

1984-07-24

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

91426, 1375961, 1376362, F15B 13042

Patent

active

044613202

ABSTRACT:
A manually-operable hydraulic control device of the hydraulic pressure liquid directional control type, with hydraulic position-retention, particularly for regulating the flow of pressurized fluid supplied to the power jack of a component or implement of an earth moving machine, comprises a pair of valves and a control lever having a central neutral position and two respective extreme operative positions for controlling the said valves. The device is provided with hydraulic means for retaining the control lever in at least one of the said extreme operative positions.

REFERENCES:
patent: 2958233 (1960-11-01), Johnson
patent: 3301136 (1967-01-01), Bolton et al.
patent: 3605814 (1971-09-01), Gordon
patent: 3753447 (1973-08-01), Davis et al.
patent: 3766944 (1973-10-01), Distler
patent: 4184512 (1980-01-01), Pignolet
patent: 4341243 (1982-07-01), Melocik
patent: 4342335 (1982-08-01), Reinicker et al.

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