Manual override control handle selectively engageable with the v

Details Manual override control handle selectively engageable with the v Manual override control handle selectively engageable with the v

1985-08-05

1987-01-06

Skaggs, H. Grant

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

212160, 251290, B66B 920

Patent

active

046339779

ABSTRACT:
A hydraulic control valve including an override control lever and an improved construction for selectively connecting the control lever to the valve spool. The control lever is selectively connected to the valve spool such that, during normal operation of the control valve, the control handle is disconnected from the valve spool, and the valve spool is freely movable and without frictional resistance of the control handle. The control lever can be moved into engagement with the valve spool such that movement of the control lever causes a consequent movement of the valve spool.

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patent: 4195551 (1980-04-01), Schmiel
patent: 4285496 (1981-08-01), Coles

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