US PATENT SUBCLASS 91 / 525
.~ With means to control the working fluid to one working member for movement relative to another without controlling the working fluid to the other working member by said means

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

508  DF  PLURAL RELATIVELY MOVABLE OR RIGIDLY INTERCONNECTED WORKING MEMBERS {11}
525.~ With means to control the working fluid to one working member for movement relative to another without controlling the working fluid to the other working member by said means {4}
526  DF  .~.~> With multiway valve in series with control means
527  DF  .~.~> Valve controlled by remote means (e.g., radio, electromagnetic, etc.)
528  DF  .~.~> Control means is fluid pressure operated valve {1}
530  DF  .~.~> Control means includes separate control valves for each working member {1}

DEFINITION

Classification: 91/525

With means to control the working fluid to one working member for movement relative to another without controlling the working fluid to the other working member by said means:

(under subclass 508) Apparatus having means to individually control one working member to cause relative motion between said one working member and another without altering the operation of the other working member.

(1) Note. Each working member may have its own control valve or there may be valve means controlling more than one working member simultaneously and an additional valve controlling either inlet or exhaust for only one working member.

(2) Note. The means is more than a mere check valve in the

inlet line to one of the motors.

(3) Note. Plural motors controlled by valves of the single selector type are included here if the valve, when actuated, controls one motor to the exclusion of another motor.

SEE OR SEARCH THIS CLASS, SUBCLASS:

536, for plural relatively movable working members controlled by a single selector type valve wherein the working members are controlled simultaneously upon actuation of said valve.