US PATENT SUBCLASS 4 / 354
.~.~ Pressure tank

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.~.~ Pressure tank {6}
355  DF  .~.~.~> Float-released outlet valve
356  DF  .~.~.~> Float outlet valve {1}
359  DF  .~.~.~> Valve held open by flow
360  DF  .~.~.~> Dashpot-controlled outlet valve
361  DF  .~.~.~> Pneumatic or hydraulic adjustability
362  DF  .~.~.~> By air under pressure

DEFINITION

Classification: 4/354

Pressure tank:

(under subclass 353) Subject matter wherein the tank is hermetically sealed and is to be filled with a fluid at the same pressure as the supply line.

SEE OR SEARCH THIS CLASS, SUBCLASS:

334+, for a pressure tank that is normally empty.