US PATENT SUBCLASS 4 / 371
.~.~.~.~ By raising trapped air housing

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}
369  DF  .~.~.~ Including means to relieve trapped air {2}
371.~.~.~.~ By raising trapped air housing

DEFINITION

Classification: 4/371

By raising trapped air housing:

(under subclass 369) Subject matter wherein the air pressure is lowered by moving the device holding the trapped air in an upward direction so as to allow the air to expand and initiate liquid flow through the siphon.

SEE OR SEARCH THIS CLASS, SUBCLASS:

368, for means to raise a housing covering a siphon where the raising causes a vacuum to cause liquid flow.