US PATENT SUBCLASS 60 / 478
.~.~ Having means pressurizing, vacuumizing or venting reservoir

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}
478.~.~ Having means pressurizing, vacuumizing or venting reservoir

DEFINITION

Classification: 60/478

(under subclass 477) Apparatus having structure by which motive liquid in the reservoir is kept at a pressure above or below atmosphere or has distinct structure providing for the flow of air into or out of the reservoir as the volume of liquid in the reservoir varies.

SEE OR SEARCH THIS CLASS, SUBCLASS:

464, for an arrangement in which a compressed gas accumulator supplies energy to the body of motive fluid driving the motor.