US PATENT SUBCLASS 91 / 20
.~ Position responsive

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

6  DF  FLUID SUPPLY THROUGH DIVERSE PATHS TO SINGLE EXPANSIBLE CHAMBER {12}
20.~ Position responsive {4}
21  DF  .~.~> Rotating working member or chamber
22  DF  .~.~> Preliminary inlet to contracting chamber (e.g., cushioning) {1}
24  DF  .~.~> Additional inlet path opened in response to position {1}
27  DF  .~.~> Plural simultaneous paths, one cutoff in response to position

DEFINITION

Classification: 91/20

(under subclass 6) Apparatus in which at least one of the flow paths of the motive fluid supply is controlled as a result of the motor working member or load attaining a given position or is incapable of being controlled until the working member or load has attained a given position.

SEE OR SEARCH THIS CLASS, SUBCLASS:

5, for expansible chamber motors having position responsive fluid supply through diverse flow paths to a single working chamber wherein the supply in one path includes a trapped motive fluid charge.