Baths – closets – sinks – and spittoons – Flush closet – Tank and bowl with plural connections – one being pneumatic
Patent
1993-08-27
1996-01-30
Fetsuga, Robert M.
Baths, closets, sinks, and spittoons
Flush closet
Tank and bowl with plural connections, one being pneumatic
4354, 4362, 4424, 222341, E03D 310
Patent
active
054871930
ABSTRACT:
A water saver toilet is provided, of the type that applies a vacuum to the toilet bowl outlet to assist flushing, which effectively uses the vacuum and which can be of low height. The toilet bowl outlet includes upper and lower trap devices (44, 50 in FIG. 2) connected by a trapway (46), with a vacuum source applied to the trapway during a flushing to pull out water and debris from the toilet bowl. One vacuum source (FIG. 3) includes a largely horizontal diaphragm (76) which separates a water chamber (82) from a vacuum chamber (80). The water chamber is initially filled with water, which is rapidly emptied during flushing, causing the diaphragm to rapidly fall from an upwardly bowed configuration (76) to a downwardly bowed configuration (76A). The vertically moving diaphragm produces a vacuum in the vacuum chamber that is connected to the trapway. A spring (84) (or weight) allows the water chamber to deliver water at a considerable pressure, regardless of the level of the water chamber with respect to the toilet bowl. Another vacuum source (FIG. 7) includes a water powered actuator (158) that receives water from a pressured water pipe at the beginning of flushing, to rapidly raise a vacuum diaphragm (170) that produces a vacuum in a vacuum chamber (172) which is connected to the trapway.
REFERENCES:
patent: 2793793 (1957-05-01), Sampson
patent: 3214067 (1965-10-01), Linington
patent: 3344960 (1967-10-01), Jacobs
patent: 4115883 (1978-09-01), Dauvergne
Fetsuga Robert M.
Fluidmaster Inc.
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