Protector for sewer system inlet

Details Protector for sewer system inlet Protector for sewer system inlet

2006-07-04

2006-07-04

Upton, Christopher (Department: 1724)

Liquid purification or separation

Structural installation

Grated inlet surface drain

C210S474000, C404S004000

Reexamination Certificate

active

07070691

ABSTRACT:
A protector for the inlet into a sewer system includes a straight or annular, porous tubular casing for placing on or around the periphery of a sewer grate; a skirt extending inwardly or outwardly from the bottom of the casing for overlapping the side edges of a sewer opening so the grate retains the protector in the use position; and a filler in the casing for maintaining the casing in an expanded condition, at least one of the casing, the skirt and the filler being permeable to water and impermeable to contaminants, whereby water can flow into the system while contaminants are blocked.

REFERENCES:
patent: 5372714 (1994-12-01), Logue, Jr.
patent: 5632888 (1997-05-01), Chinn et al.
patent: 5954952 (1999-09-01), Strawser, Sr.
patent: 6214216 (2001-04-01), Isaacson
patent: 6261445 (2001-07-01), Singleton
patent: 6274036 (2001-08-01), Ellis
patent: 6805804 (2004-10-01), Page
patent: 2002/0104789 (2002-08-01), Harris et al.
patent: 2002/0130083 (2002-09-01), Middleton et al.

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