Method and apparatus for evacuation of liquids

Details Method and apparatus for evacuation of liquids Method and apparatus for evacuation of liquids

1997-09-10

2000-09-19

Fetsuga, Robert M.

Baths, closets, sinks, and spittoons

Flush closet

Bowl

4434, 4653, 4668, 4688, 137488, 137907, 251 29, E03D 1100

Patent

active

06119283&

ABSTRACT:
A method and apparatus for evacuation of liquids, such as wastewater from e.g. wash basins, urinals, bath tubs or showers, whereby the liquid is collected in a sump, generates a hydrostatic pressure and is evacuated from the sump through a vacuum pipeline after a predetermined hydrostatic pressure is generated. In order to avoid flexible control conduits and to achieve time controlled evacuation with a simple mechanism, valves are integrated in a housing and operated by pressure differences acting on diaphragms after a certain hydrostatic pressure has been generated. One of the valves opens a connection between the sump and the vacuum pipeline to evacuate the liquid.

REFERENCES:
patent: 2543846 (1951-03-01), Griswold
patent: 5570715 (1996-11-01), Featheringill et al.
patent: 5588458 (1996-12-01), Ushitora et al.

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