Safety lock-out valve

Details Safety lock-out valve Safety lock-out valve

1975-03-27

1977-01-04

Cohan, Alan

Motors: expansible chamber type

With motive fluid valve

Relatively movable serial valves

91443, 137509, 137596, 137613, F15B 2000

Patent

active

040006840

ABSTRACT:
A lock-out valve for pneumatic systems which provides the operator with mechanical means to exhaust the system and lock it out with a padlock or similar device and, when unlocked, provides a valve to control automatically the gradual reset of working cylinders and the filling of the system with operating pressure to a safe percentage of line pressure before full line flow is established.

REFERENCES:
patent: 2318962 (1943-05-01), Parker
patent: 3136226 (1964-06-01), Gratzmuller
patent: 3149643 (1964-09-01), Breitsprecher

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