Flange valve

Details Flange valve Flange valve

2007-07-10

2007-07-10

Phillips, Charles E. (Department: 3751)

Baths, closets, sinks, and spittoons

Flush closet bowl support, coupling, seal or fastener

C137S527000, C137S527600

Reexamination Certificate

active

10847722

ABSTRACT:
A flange valve to deter entry of rodents and pests, insertable on existing devices, comprising a unidirectional swinging door attached on an inner wall of a frame, the door and the inner wall of the frame having a clearance between them of a dimension not allowing entry of rodents and pests. The design of the frame is catered to the desire of the user and may be a laterally protruding ring having a central circular opening and openings along the edges for the insertion of bolts or screws; a laterally protruding ring on one peripheral edge of an open cylindrical body; a cap having a flat top with a central circular opening and openings for the insertion of bolts and screws; a conduit; or a wax free toilet bowl gasket, a toilet flange or a wax ring used in the installation of toilet bowls.

REFERENCES:
patent: 272270 (1883-02-01), Larrabee
patent: 3047013 (1962-07-01), Baumbach
patent: 3118469 (1964-01-01), Schliesser
patent: 4127142 (1978-11-01), Snider
patent: 4813481 (1989-03-01), Sproul et al.
patent: 4935129 (1990-06-01), Wang
patent: 5117862 (1992-06-01), Molligan

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