US PATENT SUBCLASS 60 / 481
.~.~ Having fluid trapping means with a manual release or by-pass holding ram

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

325  DF  PRESSURE FLUID SOURCE AND MOTOR {47}
477  DF  .~ Ram driven by fluid pumped from reservoir {4}
481.~.~ Having fluid trapping means with a manual release or by-pass holding ram {1}
482  DF  .~.~.~> Release valve and pump actuated by a common handle

DEFINITION

Classification: 60/481

(under subclass 477) Apparatus in which the fluid pump into the ram is retained therein by structure that must be released or by-passed manually for retraction of the ram.