E - Fixed Constructions – 03 – D
Patent
E - Fixed Constructions
03
D
E03D 5/00 (2006.01) E03D 11/00 (2006.01)
Patent
CA 2048556
A vacuum assisted toilet is described wherein a vacuum is applied to a toilet bowl outlet during flushing, which avoids malfunctions that could allow sewer gas to escape, and which uses flushing water effectively. The toilet bowl outlet includes upper and lower trap devices (40,44, Fig. 5) coupled by a trapway (42), with the lower trap device forming an unobstructed air passage when no water is moving therethrough but which includes a trapping region (64) that completely fills with water and forms an airflow barrier during flushing. The vacuum source includes a container (72, Fig. 1) in the toilet tank, with the container fixed in place in the tank to lie stationary therein, and with an ordinary flush valve (23) lying outside the container, so substantially the only part of the toilet that moves during flushing is the long developed and reliable flush valve. A baffle (110) separates a first tank portion (114) which holds the container and flush valve, from a second tank portion (116) which holds an inlet valve. The top (118) of the baffle lies a plurality of centimeters below the high water level (16), so that a lot of water passes into the toilet bowl at the beginning of flushing.
Fluidmaster Inc.
Smart & Biggar
LandOfFree
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