Baths – closets – sinks – and spittoons – Flush closet – Tank only
Reexamination Certificate
2007-12-14
2009-11-17
Nguyen, Tuan N (Department: 3751)
Baths, closets, sinks, and spittoons
Flush closet
Tank only
C004S359000
Reexamination Certificate
active
07617545
ABSTRACT:
An apparatus for initiating a flush of a pressure assisted toilet includes a generally cylindrical housing having a top end, a bottom end, an internal surface and a discharge aperture having a first predetermined area. The apparatus also includes a first member at least partially interposed within the housing and having a plurality of apertures formed therein; a second member at least partially interposed within the housing and having a generally cylindrical hollow body with a top opening, a tapered upper portion adjacent the top opening, a sealing portion, and a lower extension defining a lower opening; a stem portion extending at least partially through the first member and the second member; and a first flow path extending at least from the bottom end of the housing, through at least one of the plurality of apertures formed in the first member, and through the lower opening of the second member.
REFERENCES:
patent: 3817286 (1974-06-01), Caron et al.
patent: 4233698 (1980-11-01), Martin
patent: 5361426 (1994-11-01), Martin
patent: 5652969 (1997-08-01), Taylor
patent: RE37921 (2002-12-01), Martin et al.
Nguyen Tuan N
Rader & Fishman & Grauer, PLLC
Water Control Technology Corporation
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