Pressurized toilet cistern

Details Pressurized toilet cistern Pressurized toilet cistern

2008-01-29

2008-01-29

Nguyen, Tuan (Department: 3751)

Baths, closets, sinks, and spittoons

Flush closet

Tank only

C004S332000, C004S364000, C004S376000, C004S378000, C251S040000

Reexamination Certificate

active

10475109

ABSTRACT:
A toilet-flushing (1) device comprises a container (2) divided by an elastic diaphragm (3) with a direct unrestricted connection to a water supply under pressure at the lower part of the container (2), with a flushing valve (15) also in the lower part of the container. The water distends the diaphragm (3) so that when the flushing valve (15) is opened, the diaphragm (3) ejects the flushing water fast, allowing a small volume flush to effectively clear the toilet trap (2) and sewer. Extension of the diaphragm can be reduced by having two diaphragms (55), (56), each providing half the flush volume by their extension. Substantial water saving is enabled. A water pressure actuated valve (35) that is well adapted for application to this device is disclosed.

REFERENCES:
patent: 2793793 (1957-05-01), Sampson
patent: 4115883 (1978-09-01), Dauvergne
patent: 5027444 (1991-07-01), Tsals
patent: 5487193 (1996-01-01), Hennessy
patent: 1908970 (1970-09-01), None
patent: 0 430 521 (1991-06-01), None
patent: WO 9401680 (1994-01-01), None

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