Safety device for sealing a drain assembly

Details Safety device for sealing a drain assembly Safety device for sealing a drain assembly

1990-01-08

1991-05-14

Dawson, Robert A.

Liquid purification or separation

Structural installation

Grated inlet surface drain

210 85, 210163, 210459, 404 25, 404 26, 52 19, 52 20, 52 21, 138 89, 138 92, 138 94, 49463, 49466, E03F 506

Patent

active

050153714

ABSTRACT:
A safety device for sealing a drain assembly including a plate element defining a basin with the drain assembly, a housing element depending from the plate element closed to an underground line associated with the drain assembly, and a seal element positionable between the plate element and drain assembly to provide a substantially fluid-tight seal therebetween when liquid fills the housing element interior.

REFERENCES:
patent: 3516541 (1970-06-01), Hardingham
patent: 3556993 (1971-01-01), Persson
patent: 3621623 (1970-03-01), Downes
patent: 4305679 (1981-12-01), Modi
patent: 4682907 (1987-07-01), Gaudin
patent: 4737220 (1988-04-01), Ditcher et al.
patent: 4776722 (1988-10-01), Gaudin

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