US PATENT SUBCLASS 60 / 576
.~.~.~ Of separate movement of plural delivery pistons

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}
574  DF  .~.~ Automatic control of plural stage pressure generation or utilization {3}
576.~.~.~ Of separate movement of plural delivery pistons {1}
577  DF  .~.~.~.~> Central externally driven piston drives surrounding piston means through a load responsive connector

DEFINITION

Classification: 60/576

(under subclass 574) Apparatus in which relative movement of two pistons or fluid displacers that deliver fluid toward a slave produce the staged pressure generation.