US PATENT SUBCLASS 91 / 188
.~.~ Motive fluid control actuator includes cam or crank rigid with means connecting working members

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}
188.~.~ Motive fluid control actuator includes cam or crank rigid with means connecting working members

DEFINITION

Classification: 91/188

(under subclass 183) Apparatus in which the valve means to control flow of motive fluid to or from a working member is actuated by a cam, an eccentric or a part moving in a circular path and either (1) forming a portion of the means to connect plural working members for relative motion or (2) connected to said connecting means to move therewith as a unit.