US PATENT SUBCLASS 91 / 374
.~.~ Plural movable valve parts

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

358 R  DF  WORKING MEMBER POSITION FEEDBACK TO MOTIVE FLUID CONTROL {12}
368  DF  .~ Follower type {9}
374.~.~ Plural movable valve parts {2}
375 R  DF  .~.~.~> Valve part moves about an axis {1}
376 R  DF  .~.~.~> One movable part unitary with working member {3}

DEFINITION

Classification: 91/374

(under subclass 368) Apparatus in which the valve means has a plurality of (movable) parts movable to perform a valving function, which are moved relative to one another to control the flow of motive fluid, one of said valve parts being moved by the input signal means to cause movement of the working member and another of said movable parts being operated in response to movement of the working member to stop the working member.