US PATENT SUBCLASS 4 / 375
.~.~.~ Including means to raise liquid level

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}
368  DF  .~.~ With outlet siphon {6}
375.~.~.~ Including means to raise liquid level

DEFINITION

Classification: 4/375

Including means to raise liquid level:

(under subclass 368) Subject matter having means to cause the upper surfaces of the liquid in the tank to be elevated above its normal level to cause initiation of liquid flow through the siphon.

(1) Note. If only a part of the upper surface of the liquid is raised, e.g., in bell housing, the patents are in subclasses 368+.

(2) Note. The liquid level is raised by not adding more liquid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

368+, for raising only part of the liquid level.

SEE OR SEARCH CLASS

137, Fluid Handling,

145, for means to start a siphon by applying pressure to a liquid.