Baths – closets – sinks – and spittoons – Ventilation – Bowl structure or vent valve
Patent
1998-11-18
1999-11-30
Walczak, David J.
Baths, closets, sinks, and spittoons
Ventilation
Bowl structure or vent valve
E03D 904
Patent
active
059919337
ABSTRACT:
A toilet odor removal system which uses an overflow tube in the water tank and a float valve to open and close an opening in the overflow tube for water overflow purposes and for odor removal purposes respectively. The overflow tube extends through a side wall of the water tank to an exhaust system.
REFERENCES:
patent: 5054131 (1991-10-01), Sim
patent: 5491847 (1996-02-01), Schaffer
patent: 5522093 (1996-06-01), Schaffer
patent: 5839127 (1998-11-01), Curiel
Huynh Khoa
Walczak David J.
Zobal Arthur F
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