US PATENT SUBCLASS 4 / 333
.~ Normally empty tank

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

300  DF  FLUSH CLOSET {22}
333.~ Normally empty tank {2}
334  DF  .~.~> Pressure tank {1}
338  DF  .~.~> With seat-actuated valve {1}

DEFINITION

Classification: 4/333

Normally empty tank:

(under subclass 300) Subject matter wherein the tank does not have liquid in it until a valve is actuated.

(1) Note. Usually the supply valve is open and the outlet valve is closed by common actuating means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

366, for a common actuating means for the supply and outlet valves.