US PATENT SUBCLASS 417 / 433
.~ Liquid pool seal for gas pump valve

Current as of: June, 1999
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417 /   HD   PUMPS

432  DF  INCLUDING APPLICATION OF SEPARATE FLUID TO PUMP VALVE {1}
433.~ Liquid pool seal for gas pump valve

DEFINITION

Classification: 417/433

(under subclass 432) Apparatus in which the fluid pumped is a gas and a body of liquid is provided which contacts the valve and through which the pumped gas passes, the liquid acting to prevent gas leakage through the valve when closed.