US PATENT SUBCLASS 91 / 187
.~.~ Means varies cyclic relation between working member and control valve therefor

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

170 R  DF  RELATIVELY MOVABLE WORKING MEMBERS WITH ONE HAVING MOTIVE FLUID CONTROLLED BY, MOVABLY INTERCONNECTED WITH OR MOVED BY ANOTHER {12}
183  DF  .~ With means interconnecting working members to cause relative motion {5}
187.~.~ Means varies cyclic relation between working member and control valve therefor

DEFINITION

Classification: 91/187

(under subclass 183) Apparatus having means actuated by a working member to control the motive fluid for said working member, said means being adjustable to vary the position of the working member at which control occurs.

(1) Note. The adjustment may vary all cyclic events simultaneously or the relative timing of plural, fluid control events may be changed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

330+, and see the note in that subclass for additional fields of search for expansible chamber motors having a means to adjust the positional relationship of its working member and the means to control working fluid for that working member so as to vary the position of the working member at which control occurs.

478, for motors having three or more cylinders arranged in parallel, radial, or conical relationship with a rotary transmission axis and in which there is provided separate motive fluid control for each working chamber and means for varying the cyclic relation between at least one of said reciprocating members and its associated control valve.

482+, for motors having three or more cylinders arranged in parallel, radial, or conical relationship with a rotary transmission axis and means for varying the cyclic relation between at least one of said reciprocating members and its associated control valve.