Vent structure for flush water holding tank of vehicle toilets

Details Vent structure for flush water holding tank of vehicle toilets Vent structure for flush water holding tank of vehicle toilets

1987-11-09

1989-02-21

Cohan, Alan

Fluid handling

Diverse fluid containing pressure systems

Fluid separating traps or vents

4321, F16K 3318

Patent

active

048056600

ABSTRACT:
An improved vent structure for a toilet which is normally open but automatically closable depending on the water level whereby to prevent unwanted spills allows air to escape from the interior of a flush water holding tank. A cruciform shaped stem including a buoyant body attached thereto reciprocates in a bore, and a seal, provided by an interior bellows or by the buoyant body, closes the air path when the stem is buoyed upwardly by a rise in the water level.

REFERENCES:
patent: 2285581 (1942-06-01), Horton
patent: 2893412 (1959-07-01), Fox
patent: 4108380 (1978-08-01), Richardson
patent: 4508550 (1985-04-01), Berfield

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