Storm infilteration disk with filter

Details Storm infilteration disk with filter Storm infilteration disk with filter

1988-12-22

1990-05-22

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

52 20, 210170, 277182, 277184, 404 25, F16J 1510, E02D 2914

Patent

active

049271636

ABSTRACT:
An infiltration system for a manhole and manhole cover assembly, the system including an infiltration disk positioned between the manhole and cover assembly, the disk including a flange encircling the manhole and cover assembly and a filtration means in the gap between the flange and cover assembly to prevent ingress of solid matter into the space between the manhole cover and the disk.

REFERENCES:
patent: 4368893 (1983-01-01), Gagas
patent: 4419232 (1983-12-01), Arntyr et al.
patent: 4540310 (1985-09-01), Ditcher et al.

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