Change-over valve, preferably for a railway vehicle

Details Change-over valve, preferably for a railway vehicle Change-over valve, preferably for a railway vehicle

1974-07-08

1977-03-08

Cohan, Alan

Fluid handling

Systems

Supply and exhaust

188195, 251 77, B60T 818

Patent

active

040107710

ABSTRACT:
A change-over valve controls a source of fluid under pressure to signal at an outlet line one of two different pressures in response to applied forces such as load on a vehicle. The valve has a rotary lever load application arm receiving the applied forces to rotate it against the force of a return spring. In unloaded condition the return spring vents the outlet line to atmospheric pressure. A spring loaded valve controls the fluid pressure path to the outlet line and is operated as the applied load force increases to provide fluid under pressure to the outlet line.

REFERENCES:
patent: 3072135 (1963-01-01), Moskow

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