US PATENT SUBCLASS 91 / 385
.~ Bias-type input and feedback signal means

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}
385.~ Bias-type input and feedback signal means {2}
386  DF  .~.~> Feedback bias means adjustable
387  DF  .~.~> Spring-type feedback bias means

DEFINITION

Classification: 91/385

(under subclass 358) Apparatus in which the signal provided by the input signal means is a variable force acting on the valve means and the working member position signal is

generated by means which provides a variable force acting on the valve means in opposition to the input signal force and which force is greater the greater the deviation of the working member from a given position.