Toilets with quick flush trapways

Details Toilets with quick flush trapways Toilets with quick flush trapways

2006-04-04

2006-04-04

Phillips, Charles E. (Department: 3751)

Baths, closets, sinks, and spittoons

Flush closet

Bowl

Reexamination Certificate

active

07020908

ABSTRACT:
A toilet has a trapway extending between a bowl opening and an outlet opening. The trapway defines a curved, preferably uniform circular cross-section water dam region above the bowl opening, a down leg, and a straight out leg between the down leg and the outlet opening. The down leg has a rearward slope where is located a horizontal baffle. The inclined down leg and horizontal baffle work in concert to prevent the back flow of air to a region above the dam as well as to facilitate rapid entrainment and evacuation of air below the dam.

REFERENCES:
patent: 1067096 (1913-07-01), Cochran
patent: 2438507 (1948-03-01), Langdon
patent: 3484873 (1969-12-01), Hoard et al.
patent: 4173800 (1979-11-01), Flegel et al.
patent: 5819326 (1998-10-01), Kobayashi et al.
patent: 5918325 (1999-07-01), Arita et al.
patent: 5983413 (1999-11-01), Hayashi et al.
patent: 6292956 (2001-09-01), Kayahara

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