US PATENT SUBCLASS 60 / 588
.~.~.~ Master piston traps liquid on advance across a feed port in cylinder wall

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}
585  DF  .~.~ Holder for reserve liquid feeds master {3}
588.~.~.~ Master piston traps liquid on advance across a feed port in cylinder wall

DEFINITION

Classification: 60/588

(under subclass 585) Apparatus in which on inlet to the pulse volume of liquid from the reserve liquid holder is a part in the cylinder wall that connects the reserve liquid and the pulse liquid when the piston of the master is in its nonpressurizing position and which is traversed by the piston during its initial advance so that the port is on one side of the piston and the pulse liquid on the other during pressurization.