US PATENT SUBCLASS 91 / 260
.~.~.~ Biased inlet valve with adjustable tripping means

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

218  DF  CYCLICALLY OPERABLE {34}
247  DF  .~ Timing control by relative adjustment of plural movable fluid control elements {3}
252  DF  .~.~ Cut off adjustable relative to admission {4}
260.~.~.~ Biased inlet valve with adjustable tripping means {1}
261  DF  .~.~.~.~> Inlet valve movable about an axis

DEFINITION

Classification: 91/260

(under subclass 252) Apparatus in which a releasable drive means, or a releasable latch, is provided to cyclically open or hold open, respectively, the inlet valve against a biasing force tending to move said valve to a closed position, and in which adjustable means are provided to release said drive means or said latch to allow the biasing force to close said valve, so as to vary the time of closing of the inlet valve means with respect to the motor movement cycle.

SEE OR SEARCH THIS CLASS, SUBCLASS:

254, for cyclically operable expansible chamber motors having adjustable trip means for a biased cut-off element of a plural control element inlet valve for varying the time of occurrence of the cut-off event.

331, for cyclically operable expansible chamber motors having independently operable means to adjust the connection between working member and a distributing valve, other than those which adjust the timing of fluid control events as defined under subclass 247, in which the connection includes trip means.

344+, for cyclically operable expansible chamber motors in which a biased means moves a distributor after a predetermined travel, other than those which involve adjustable timing of fluid control events as defined under subclass 247.