Back jet flush toilet systems and methods

Details Back jet flush toilet systems and methods Back jet flush toilet systems and methods

1996-03-08

1998-09-08

Walton, George L.

Fluid handling

Liquid level responsive or maintaining systems

By weight of accumulated fluid

4415, 4422, 4425, 137433, F16K 3122, F16K 3300, E03D 1102

Patent

active

058031146

ABSTRACT:
A flush toilet system includes a bowl that is drained in a flush operation through a flow path including a trap and a siphon. A bypass passage supplies a back jet of water in the reverse flow direction in the flow path. A back jet valve assembly opens to permit back jet flow during only the first part of the interval during which flush water is supplied to the system from a water supply. The kinetic energy of the back jet is converted to static pressure to block or impede flow of flush water through the flow path. Water level increases in the bowl, and when the back jet flow is discontinued a siphon flush operation proceeds. The back flush valve assembly also releases water after the flushing operation in order to reseal the trap.

REFERENCES:
patent: 481098 (1892-08-01), Baker
patent: 731756 (1903-06-01), Cottle
patent: 1013730 (1912-01-01), Bemish
patent: 1156684 (1915-10-01), Higgins
patent: 1201628 (1916-10-01), Robertson
patent: 1232767 (1917-07-01), Camfield et al.
patent: 1701936 (1929-02-01), Trerice
patent: 4086668 (1978-05-01), Tubbs
patent: 4327764 (1982-05-01), Biederman et al.
patent: 4342328 (1982-08-01), Matta
patent: 4989277 (1991-02-01), Tsutsui et al.
patent: 5054133 (1991-10-01), Pickerrell et al.

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