Security valve mechanism for a hydraulic system

Details Security valve mechanism for a hydraulic system Security valve mechanism for a hydraulic system

1984-11-09

1987-04-21

Wolfe, Robert L.

Locks

Special application

For control and machine elements

1373846, F16K 3500

Patent

active

046586083

ABSTRACT:
A lock mechanism for vehicles, such as cars, forklifts and earth moving equipment, having hydraulic systems for brakes, transmissions or clutches is disclosed. The mechanism includes a double non-return cam and hydraulic actuated valves which when closed retain fluid under pressure in the brake, transmission or clutch system, to prevent movement of the vehicle, such as by holding brakes on or clutches in the disengaged position.

REFERENCES:
patent: 1545712 (1925-07-01), Toy
patent: 3116752 (1964-01-01), Duncan
patent: 3557584 (1971-01-01), Triglia
patent: 4402339 (1983-09-01), Owens

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