Drain control device

Details Drain control device Drain control device

1976-04-02

1978-07-04

Nilson, Robert G.

Fluid handling

With casing, support, protector or static constructional...

Static constructional installations

1374542, 137849, F16K 1514

Patent

active

040982874

ABSTRACT:
A drain control device adapted to be installed in a floor drain or the like and includes a device which prevents the backflow of water or other flowable material up through the floor drain. An expandable annular member is sealingly engaged with a floor drainpipe and includes a depending generally conical body divided into a plurality of circumferentially spaced and longitudinally extending segments capable of extension and contraction to enable flow in one direction and prevent backflow. A funnel-shaped device is inserted into the upper end of the drain control for guiding material downwardly into the drain control and preventing such material from becoming lodged on the upper end of the annular, peripherally expandable resilient body.

REFERENCES:
patent: RE27399 (1972-06-01), Urso
patent: 1753724 (1930-04-01), Shaw
patent: 3047013 (1962-07-01), Baumbach
patent: 3107687 (1963-10-01), Howe
patent: 3118468 (1964-01-01), Bochan
patent: 3565106 (1971-02-01), Baumbach

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