Drain closure assembly

Details Drain closure assembly Drain closure assembly

1975-06-17

1976-04-13

Aegerter, Richard E.

Baths, closets, sinks, and spittoons

Strainer, stopper, plug or closure

Plugs

251 75, 251323, A47K 114

Patent

active

039494330

ABSTRACT:
A drain closure assembly including a resilient, dome-shaped plug member which may be changed from stable "closed" convex configuration to a stable "open" concave configuration by applying pressure to either an edge portion or a central portion of the plug member. The plug member is carried by a stem means which in the preferred embodiment is biased upwardly by spring means from a depressed position under the influence of pressure to a stable upper position when the pressure is released.

REFERENCES:
patent: 423698 (1890-03-01), Bechtold
patent: 1300593 (1919-04-01), Fairchild
patent: 1403423 (1922-01-01), LeDuc
patent: 1825499 (1931-09-01), Zorn
patent: 2186625 (1940-01-01), Carroll
patent: 2683551 (1954-07-01), Riveron
patent: 2750601 (1956-06-01), Houle
patent: 2915762 (1959-12-01), Kivela
patent: 2968047 (1961-01-01), Stilborn
patent: 3069697 (1962-12-01), Brucken
patent: 3366980 (1968-02-01), Petursson
patent: 3468512 (1969-09-01), Politz
patent: 3525105 (1970-08-01), Richards
patent: 3537113 (1970-11-01), Elzner
patent: 3588928 (1971-06-01), Hiertz
patent: 3711894 (1973-01-01), Gajer
patent: 3771177 (1970-11-01), Rogers et al.

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