US PATENT SUBCLASS 91 / 23
.~.~.~ By bypassing from expanding chamber (399)

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  DF  .~ Position responsive {4}
22  DF  .~.~ Preliminary inlet to contracting chamber (e.g., cushioning) {1}
23.~.~.~ By bypassing from expanding chamber (399)

DEFINITION

Classification: 91/23

(under subclass 22) Apparatus in which the motor is of the double acting type, the initial charge of motive fluid being supplied to the contracting chamber from the expanding chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

399, for expansible chamber motors in which motive fluid is by passed from an expanding chamber to an opposed otherwise closed contracting chamber so as, for example, to cushion movement of the working member.