Drain trap clean-out system

Details Drain trap clean-out system Drain trap clean-out system

2005-03-01

2005-03-01

Upton, Christopher (Department: 1724)

Liquid purification or separation

Structural installation

Grated inlet surface drain

C210S311000, C210S312000, C210S533000, C004S679000

Reexamination Certificate

active

06860991

ABSTRACT:
An interior pipe has an upper end, a lower end and a central extent. An exterior pipe has an upper region receiving the central extent of the interior pipe and a lower region receiving the lower extent of the interior pipe. The lower region terminates with a removably coupled plug. A T-shaped pipe has an upper, lower and central portions. The upper portion is coupled with respect to the interior pipe. The lower portion is coupled with respect to the exterior pipe. The central portion is adapted to be joined to a wastewater line. Water passing from the sink will flow downwardly through the interior pipe and upwardly through the space between the interior and exterior pipes passing through one or more screens, then laterally through the central portion of the T-shaped pipe.

REFERENCES:
patent: 1641938 (1927-09-01), Traut
patent: 1681117 (1928-08-01), Howcott
patent: 2263259 (1941-11-01), Boosey
patent: 2472322 (1949-06-01), Weissman
patent: 4250037 (1981-02-01), Kempa
patent: 4263138 (1981-04-01), Kessel
patent: 5916436 (1999-06-01), Devore et al.
patent: 6093314 (2000-07-01), Wilson et al.
patent: 6319397 (2001-11-01), Su et al.

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