US PATENT SUBCLASS 91 / 255
.~.~.~.~ Adjustable fluid control for fluid actuated cut off

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}
253  DF  .~.~.~ Inlet controlled by relatively cyclically moved elements {3}
255.~.~.~.~ Adjustable fluid control for fluid actuated cut off

DEFINITION

Classification: 91/255

(under subclass 253) Apparatus in which the means to adjust the control element for stopping motive fluid flow includes means cyclically moved by an actuating fluid to move the control element to or from its flow stopping position and adjustable means to control the actuating fluid flow so as to vary the time of occurrence of the cut-off event.

SEE OR SEARCH THIS CLASS, SUBCLASS:

263, for cyclically operable expansible chamber motors having adjustable fluid control for an inlet valve, other than the cut off element of a plural control element inlet valve, for varying the time of occurrence of the cut off event.

281+, for cyclically operable expansible chamber motors having working member controlled motive fluid supply for operating a distributor motor, other than those which adjust timing of fluid control events as defined under subclass 247.