Liquid flow control strainer

Details Liquid flow control strainer Liquid flow control strainer

1981-05-04

1983-01-25

Shepperd, John W.

Baths, closets, sinks, and spittoons

Strainer, stopper, plug or closure

Plugs

4286, 251 75, A47K 114

Patent

active

043695310

ABSTRACT:
A strainer for a tub drain has a spring-biased plunger for moving the stopper from its closed position to an open, liquid flow position. The plunger has a stem that extends into the passageway of the body of the strainer, and is mounted thereon for axial reciprocation between an extended outward (open) position and a depressed inward (closed) position. An axial bore extends through the stopper member, and provides a surface portion conforming to the corresponding portion of the plunger stem. Inward movement of the plunger causes a sealing ring, which is mounted on the stem portion, to be displaced to a position of frictional engagement on the corresponding surface portion of the stopper member bore. Subsequent outward movement, under the force of the biasing spring, causes the plunger to lift the stopper member away from the seat portion of the body, and thereby to open the strainer.

REFERENCES:
patent: 2670143 (1954-02-01), Jordan
patent: 3220695 (1965-11-01), Downey et al.
patent: 3366980 (1968-02-01), Petursson et al.
patent: 3468512 (1969-09-01), Politz
patent: 3949433 (1976-04-01), Lion
patent: 4103372 (1978-08-01), Cuschera

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