US PATENT SUBCLASS 91 / 428
.~ Manual control carried on or operated from load or output element

Current as of: June, 1999
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91 /   HD   MOTORS: EXPANSIBLE CHAMBER TYPE

418  DF  WITH MOTIVE FLUID VALVE {32}
428.~ Manual control carried on or operated from load or output element

DEFINITION

Classification: 91/428

(under subclass 418) Apparatus in which the valve means is manually operable by means carried on and movable with the working member or load or which is positioned to be operable by a human operator carried on and movable with the working member or load.

SEE OR SEARCH THIS CLASS, SUBCLASS:

376+, for working member position feedback controls having a valve part which is unitary with the working member.