Baths – closets – sinks – and spittoons – Flush closet – With holding tank
Patent
1995-05-30
2000-03-21
Fetsuga, Robert M.
Baths, closets, sinks, and spittoons
Flush closet
With holding tank
4322, E03D 100
Patent
active
060387106
ABSTRACT:
A sewage removal system for low water use toilets within an insulated building, the system comprising a transfer tank to collect sewage by gravity from the toilet, a holding tank remote from the transfer tank, a sewage discharge pipe extending between the transfer tank and the holding tank for fluid communication between the transfer tank and the holding tank, the sewage discharge pipe rising to a point, along its length, which is significantly above the fluid level in each of the transfer tank and the holding tank, a vent pipe for the interior of the holding tank and blower associated with the vent pipe, when activated to create a sufficient vacuum within the holding tank to draw sewage from the transfer tank, through the discharge pipe, into the holding tank, and a switch associated with the transfer tank and arranged so as to activate the blower, when the level of the sewage in the transfer tank rises to a predetermined height and to deactivate the blower when that level falls to a predetermined height. This system avoids the requirement for valves, pumps or other mechanical devices for removal of sewage from the building to a remote holding tank through the use of pneumatics. The holding tank may be higher, lower or on the same level as the transfer tank.
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patent: 4713847 (1987-12-01), Oldfelt et al.
patent: 5100266 (1992-03-01), Ushitora et al.
patent: 5186354 (1993-02-01), Coffey et al.
patent: 5214807 (1993-06-01), Terve
patent: 5282281 (1994-02-01), Clear et al.
Cowater International Inc.
Fetsuga Robert M.
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