Vacuum assist toilet trap

Details Vacuum assist toilet trap Vacuum assist toilet trap

1994-01-24

1995-04-11

Recla, Henry J.

Baths, closets, sinks, and spittoons

Flush closet

Bowl

4328, 4421, 13724741, 13724729, E03D 1118

Patent

active

054045975

ABSTRACT:
A vacuum assisted toilet wherein a vacuum is applied between upper and lower traps (40,44 in FIG. 2) of a toilet bowl outlet during a flushing, wherein the lower trap is constructed to more reliably assure that an air passage (64) above a pool of water (52) of the lower trap will quickly close near the beginning of a flushing and will remain open between flushings. The lower trap has a lower wall (50) that holds a pool of water (52) with a pool top (62) of predetermined height (A) between flushings, and has an upper wall (60) spaced above the pool top to form an air passage. The upper wall forms a narrow but tall vent (100, FIG. 4) of the air passage, which assures that the air passage will always be open between flushings, and with the narrow but tall vent being quickly closed by water rapidly flowing therethrough at the beginning of a flushing.

REFERENCES:
patent: 541274 (1895-06-01), Hamilton
patent: 622205 (1899-04-01), Burnett
patent: 1062413 (1913-05-01), Payne
patent: 3224013 (1965-12-01), Tubbs
patent: 4145776 (1979-03-01), Crosby et al.
patent: 5054133 (1991-10-01), Pickerrel et al.
patent: 5142712 (1992-09-01), Hennessy
patent: 5170515 (1992-12-01), Kai et al.

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