.~ Dashpot or fluid controlled retarder or timer {5}
54
.~.~ Closed fluid circuit dashpot or choke chamber
DEFINITION
Classification: 251/54
(under subclass 48) Subject matter in which valve operation is affected by an isolated fluid flowing from an expansible chamber into a storage space from which it returns to fill the expansible chamber without co-mingling with other fluids.
(1) Note. Frequently the isolated fluid is caused to flow from one side of a piston to the other.
(2) Note. See the search notes to subclass 48 for related fields of search.
SEE OR SEARCH THIS CLASS, SUBCLASS:
48+, and 55, for dashpot utilizing unconfined atmospheric air as the fluid drawn into the expansible chamber.
