US PATENT SUBCLASS 91 / 195
.~.~.~ With self-control

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}
189 R  DF  .~ Position of one working member controls motive fluid for another {3}
191  DF  .~.~ Each cyclically controls another (e.g., duplex) {4}
195.~.~.~ With self-control

DEFINITION

Classification: 91/195

(under subclass 191) Apparatus having valve means controlling only a first working member, means to actuate the valve means by said first working member and additional means to actuate said valve means by a different working member.

(1) Note. A typical example is a type of "duplex" motor where each piston actuates the valving for another piston to synchronize the pistons but with additional cut off valves each actuated by the piston controlled thereby.

(2) Note. The valve means may consist of a single valve operated by both the working member controlled thereby and by a second working member.

SEE OR SEARCH THIS CLASS, SUBCLASS:

193, for fluid operated distributor valves controlled jointly by plural working members.

194, for plural motors of the type provided for in this subclass (195) but which have a disclosed rotary output.