Pressurized flush toilet tank

Details Pressurized flush toilet tank Pressurized flush toilet tank

1990-04-16

1991-09-10

Phillips, Charles E.

Baths, closets, sinks, and spittoons

Flush closet

Tank only

E03D 310

Patent

active

050462016

ABSTRACT:
A toilet has a pressurized reservoir tank which is connected to a source of water via a backflow preventer, a pressure regulator and an aspirator. The inlet to the tank extends from the upper portion of the tank down into the lower portion to discharge water in the lower portion until a preset pressure in the tank is reached. A flush valve body provides a seal between a captured seal ring and a valve housing and a secondary seal between the bottom of the valve body and an annular surface of the valve housing, which also serves as a downward stop. In an alternate embodiment, a breather hole is provided in the upper portion of the inlet tube to allow for draining of the reservoir tank.

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Applicant's Exhibit No. 18, Catalog of Watts Regulator Co., 815 Chestnut Street North, Andover, Massachusetts, pp. 14-16, admitted prior art.
Applicant's Exhibit No. 19, eleven pages of prior art, updated building code requirements relating to back siphonage protection.
Applicant's Exhibit No. 23, brochure entitled "Circle Seal Controls Relief Valves 500 Series Popoff, Inline 5-150 PSI" of Circle Seal Controls, Brunswick Corporation, P.O. Box 3666, Anaheim, California, 92803, admitted prior art.
Applicant's Exhibit No. 33, "Circle Seal Controls PVR Series Corrosion Resistant Regulators Pressure Range Inlet-3000 PSI Outlet-60 PSI" ad of Circle Seal Controls, Brunswick Corporation, P.O. Box 3666, Anaheim, California, 92803, admitted prior art.

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