US PATENT SUBCLASS 4 / 359
.~.~.~ Valve held open by flow

Current as of: June, 1999
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4 /   HD   BATHS, CLOSETS, SINKS, AND SPITTOONS

300  DF  FLUSH CLOSET {22}
353  DF  .~ Tank only {9}
354  DF  .~.~ Pressure tank {6}
359.~.~.~ Valve held open by flow

DEFINITION

Classification: 4/359

Valve held open by flow:

(under subclass 354) Subject matter wherein an outlet valve is held open by the liquid flow or pressure acting against a valve, piston, or diaphragm.

SEE OR SEARCH THIS CLASS, SUBCLASS:

397, for a flow responsive element to hold an outlet valve open.