Drain guard

Details Drain guard Drain guard

1989-12-20

1991-09-24

Silverman, Stanley

Liquid purification or separation

Structural installation

Grated inlet surface drain

210462, 52 12, 52 15, 285 42, B01D 3502

Patent

active

050511750

ABSTRACT:
The invention includes a drain guard and drain protection system. The drain guard includes a cross-sectionally L-shaped frame having a base and an upstanding sidewall extending therefrom. The upstanding sidewall has a plurality of spaced openings. The base may also have a plurality of spaced openings in communication with the plurality of spaced upstanding sidewall openings positioned relative thereto. The frame is of substantially greater perimeter than the perimeter of the enclosed drain opening. The drain protection system includes a surface layer having ballast spread therealong, a drain opening extending through the surface layer, a portion of the surface layer cleared of ballast, the portion outwardly extending from the drain opening to a drain guard of the above-described type.

REFERENCES:
patent: 528888 (1894-11-01), McGill
patent: 1252548 (1918-01-01), Carlson
patent: 1593550 (1926-07-01), Holt
patent: 1761257 (1930-06-01), Fleming
patent: 2807368 (1957-09-01), Blau
patent: 3121682 (1964-02-01), Alberico
patent: 3517813 (1970-06-01), Thaler
patent: 4035297 (1977-07-01), Aldridge et al.
patent: 4107929 (1978-08-01), Ebeling et al.
patent: 4418432 (1983-12-01), Vidal

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