US PATENT SUBCLASS 91 / 368
.~ Follower type

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.~ Follower type {9}
369.1  DF  .~.~> With relatively movable working and output members reacting on input member {2}
370  DF  .~.~> With motor chamber pressure reaction on valve {2}
374  DF  .~.~> Plural movable valve parts {2}
379  DF  .~.~> Disproportional rate of response
380  DF  .~.~> Screw and follower (e.g., nut)
381  DF  .~.~> Differential gearing
382  DF  .~.~> Cam and follower
383  DF  .~.~> Cable
384  DF  .~.~> Floating link

DEFINITION

Classification: 91/368

(under subclass 358) Apparatus in which the valve means comprises relatively movable parts whose range of movement to cause actuation of the working member is limited to a fractional portion of the total input signal which may be applied and to the total range of movement of the working member and in which the signal input means and the working member are so related to the valve means that working member movement will result only when the input signal means moves and will continue only as long as the signal input means continues to move; movement of the working member ceasing when movement of the input signal means ceases.

SEE OR SEARCH THIS CLASS, SUBCLASS:

363, for working member position feedback controls of the follower type in which both the input and feedback signal means are electrical.