US PATENT SUBCLASS 91 / 362
.~.~ Means provides incremental movements (e.g., stepper 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}
361  DF  .~ Electrical input and feedback signal means (459) {2}
362.~.~ Means provides incremental movements (e.g., stepper type)

DEFINITION

Classification: 91/362

(under subclass 361) Apparatus comprising a plurality of switch or contact means in the electrical input and feedback circuits corresponding to a plurality of specific increments of the range of movement of the motor working member in one direction such that on making or breaking certain ones of the switches or contacts a definite range of movement or a specific position of the working member will result.