Drain vent seal

Details Drain vent seal Drain vent seal

2011-02-22

2011-02-22

Huson, Gregory (Department: 3751)

Baths, closets, sinks, and spittoons

Obstruction remover

Connected to a source of external fluid under pressure

C004S255010

Reexamination Certificate

active

07891027

ABSTRACT:
A seal assembly for a drain vent is provided to direct the pressure exerted by a plunger to the face of a drain clog rather than escaping through the drain vent. The seal assembly of the invention comprises a tubular body having a first closed end and a second open end to define a substantially rigid a cup-like structure or cavity. A sealing member concentric with a longitudinal axis of the tubular body is attached to the second open end of the tubular body to form a seal against a surface containing the drain vent. A handle is attached to the closed end of the cup-like structure and extends away from the closed first end of the tubular body to provide a mechanism for the user to hold the sealing member against the surface containing the drain vent during the plunging process.

REFERENCES:
patent: 872746 (1907-12-01), Peterson
patent: 952240 (1910-03-01), Deming
patent: 1240132 (1917-09-01), Gleason
patent: 2036614 (1936-04-01), Tharp
patent: 3336604 (1967-08-01), Lacey et al.
patent: 5497516 (1996-03-01), Irwin
patent: 7058993 (2006-06-01), Nasco
patent: 7062800 (2006-06-01), Alfred

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