US PATENT SUBCLASS 91 / 519
.~ With means for selectively changing the speed or force exerted on load by the selective application of motive fluid in a single direction to one or more working members

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}
519.~ With means for selectively changing the speed or force exerted on load by the selective application of motive fluid in a single direction to one or more working members

DEFINITION

Classification: 91/519

With means for selectively changing the speed or force exerted on load by the selective application of motive fluid in a single direction to one or more working members:

(under subclass 508) Apparatus having means for selectively changing the load output speed or force by selectively applying motive fluid to different working members interconnected to actuate the load or by selectively applying different working fluid pressures in a single direction to one working member of a plurality of working members driving the load.

SEE OR SEARCH THIS CLASS, SUBCLASS:

415+, for a working member having its movement controlled as a function of motive fluid pressure acting on its opposed pressure surfaces.

533, for plural rigidly connected working members controlled by a single motive fluid control valve.