US PATENT SUBCLASS 60 / 555
.~.~.~ Master movement of master produces a pressure that controls the power fluid

Current as of: June, 1999
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60 /   HD   POWER PLANTS

325  DF  PRESSURE FLUID SOURCE AND MOTOR {47}
533  DF  .~ Pulsator {25}
547.1  DF  .~.~ With control of or by a separate power fluid, etc. {9}
555.~.~.~ Master movement of master produces a pressure that controls the power fluid {2}
556  DF  .~.~.~.~> Power fluid input controller operated by piston or diaphragm acted on one side by pressure of a manual master and on the other by pressure of a power driven master
557  DF  .~.~.~.~> Pressurized fluid from manual master charges slave and controls power fluid to separate master {1}

DEFINITION

Classification: 60/555

(under subclass 547) Apparatus including a manual actuator that moves either a power master or a separate master and in which the increase in pressure produced by such movement controls the supply of power fluid to the power driven master.