Back-water trap for a floor drain system

Details Back-water trap for a floor drain system Back-water trap for a floor drain system

2011-01-25

2011-01-25

Popovics, Robert James (Department: 1797)

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Check valve

C210S164000, C210S303000

Reexamination Certificate

active

07875172

ABSTRACT:
A back-water trap unit comprises a housing having an outer perimetric wall sealed to a base to define an enclosure, and a removable housing cover comprising inlet apertures. An interior wall, shorter than the housing wall, is sealed to the base to define an inner compartment and an outer compartment within the enclosure, the inner compartment being sealed by a cover secured to the upper interior wall edge and the inside of the housing wall. A flapper valve secured to the interior wall within the inner compartment is rotatable in response to liquid pressure to open or close an inlet aperture proximate the lower interior wall edge. An outlet through the housing wall as high as or above the upper edge of the inlet aperture allows discharge of fluid from the inner compartment, while the flapper valve prevents unwanted back-flow from the inner compartment to the outer compartment.

REFERENCES:
patent: 414240 (1889-11-01), Norton
patent: 540297 (1895-06-01), Brintnall
patent: 592690 (1897-10-01), Bragger
patent: 947817 (1910-02-01), Hayes
patent: 1007463 (1911-10-01), Madden
patent: 1109740 (1914-09-01), Dehn
patent: 1329405 (1920-02-01), Hinton
patent: 1363792 (1920-12-01), Johnston
patent: 1469790 (1923-10-01), Hysko
patent: 1699871 (1929-01-01), Boosey
patent: 1779936 (1930-10-01), Hess
patent: 2246390 (1941-06-01), Smith
patent: 2796988 (1957-06-01), Loffler
patent: 3565106 (1971-02-01), Baumbach et al.
patent: 3707986 (1973-01-01), Breen
patent: 3973407 (1976-08-01), Vecchio
patent: 4098287 (1978-07-01), Baumbach
patent: 4314583 (1982-02-01), Peterson
patent: 4487219 (1984-12-01), Mäkelä et al.
patent: 4501665 (1985-02-01), Wilhelmson
patent: 4535800 (1985-08-01), Leech
patent: 4744109 (1988-05-01), Yuill
patent: 4870992 (1989-10-01), Irwin et al.
patent: 5341523 (1994-08-01), Barnes
patent: 5582720 (1996-12-01), Deming
patent: 5728294 (1998-03-01), Deming
patent: 5915408 (1999-06-01), Dudley
patent: 5976364 (1999-11-01), Williams
patent: 6318397 (2001-11-01), Huber et al.
patent: 6558077 (2003-05-01), Colson
patent: 6719489 (2004-04-01), Colson
patent: 6795987 (2004-09-01), Cornwall
patent: 7662280 (2010-02-01), Cooney
patent: 2004/0049846 (2004-03-01), Cornwall
patent: 1 196 543 (1985-11-01), None
patent: 1 272 659 (1990-08-01), None
patent: 2 429 950 (2004-03-01), None

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