.~ Dashpot or fluid controlled retarder or timer {5}
55
.~.~ With choke by-pass or relief means
DEFINITION
Classification: 251/55
(under subclass 48) Subject matter in which a dashpot is filled with air drawn in from the surrounding air and either the inflow or outflow is restricted, means being provided to shunt fluid around the restricted communication on reverse flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
35, for choked pressure type servo-motor actuators for valves in which the choke passage varies according to the valve position.
51, for similar chambers which are line pressure connected.
54, for similar restricted and unrestricted flow paths for dashpots or choke chambers having a closed fluid circuit.
