Device to assist P-trap drainage

Details Device to assist P-trap drainage Device to assist P-trap drainage

2006-11-07

2006-11-07

Le, Huyen (Department: 3751)

Baths, closets, sinks, and spittoons

Strainer, stopper, plug or closure

Combined strainer and pipe coupling

C004SDIG014, C004S286000

Reexamination Certificate

active

07131150

ABSTRACT:
The device is a molded, chemically-resistant-plastic cylinder consisting of a top rail, a bottom rail, four equally spaced quadrant side bars and four tapered helicoidally twisted directional vanes. Vanes are tapered from top to bottom so as not to collect debris.

REFERENCES:
patent: 4045351 (1977-08-01), Peterson
patent: 4224701 (1980-09-01), Huang
patent: 4949406 (1990-08-01), Caneli
patent: 5236137 (1993-08-01), Coogan
patent: 5413705 (1995-05-01), Tammera
patent: 5546614 (1996-08-01), King, II
patent: 6385799 (2002-05-01), Doyen
patent: 6558538 (2003-05-01), Scuilla
patent: 6609259 (2003-08-01), Cantrell
patent: 11-158957 (1999-06-01), None

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