US PATENT SUBCLASS 91 / 26
.~.~.~.~ First path has check valve or selectively adjustable throttle

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}
24  DF  .~.~ Additional inlet path opened in response to position {1}
25  DF  .~.~.~ Working member or part carried thereby uncovers inlet port {1}
26.~.~.~.~ First path has check valve or selectively adjustable throttle

DEFINITION

Classification: 91/26

(under subclass 25) Apparatus in which said first supply path is provided with (1) a self acting valve which opens in response to motive fluid flow to permit substantially unrestricted flow into the working chamber, but is self closing to prevent exhaust flow from the working chamber, or (2) a valve which may be manually operated to vary the flow capacity of said first supply path.