Water closet ventilating system with vacuum breaker valve

Details Water closet ventilating system with vacuum breaker valve Water closet ventilating system with vacuum breaker valve

1979-05-18

1980-11-11

Artis, Henry K.

Baths, closets, sinks, and spittoons

Ventilation

Electric-motor pump

4218, 4216, E03D 904, A47K 1300

Patent

active

042324068

ABSTRACT:
A system for ventilating the toilet bowl of a water closet of the type having a standpipe in the flush tank thereof and wherein the lower end of the standpipe is connected to the conduit which extends between the flush tank and the flush ring in the toilet bowl and the upper end of the standpipe extends above the normal level of the water in the flush tank. The inlet of a suction fan communicates with the space above the level of the water in the flush tank and the outlet of the fan is connected to a suitable point of discharge for gases withdrawn from the toilet bowl. A vent passage extends from the exterior of the flush tank to the space above the level of the water in the flush tank, and a normally closed flapper valve, which is connected by linkage to a float that floats on the surface of the water in the flush tank, moves to an open position to prevent a vacuum from developing in the space above the level of the water in the flush tank when the tank is flushing the toilet bowl and the water level in the tank drops.

REFERENCES:
patent: 3192539 (1965-07-01), Martz
patent: 3495282 (1970-02-01), Taggart
patent: 3626554 (1971-12-01), Martz
patent: 3691568 (1972-09-01), Martz
patent: 3703010 (1972-11-01), Russell
patent: 3939506 (1976-02-01), Pearson
patent: 4007498 (1977-02-01), Pearson
patent: 4011608 (1977-03-01), Pearson
patent: 4017916 (1977-04-01), Pearson

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