Manhole Aqua-Blok inflow protector

Details Manhole Aqua-Blok inflow protector Manhole Aqua-Blok inflow protector

1993-09-13

1995-01-17

Britts, Ramon S.

Road structure, process, or apparatus

Pavement

Vault cover-closure

52 20, E02D 2912

Patent

active

053821130

ABSTRACT:
An Aqua-Blok that fits into a frame or cone of a manhole directly beneath the cover, in the frame below the cover or within the cone to catch water that seeps into the manhole. Aqua-Blok is a polyurea, flexible bowl that rests on the frame directly under the cover or is mounted in frame or the cone. When used in the lower frame, it has a closed cell gasket on its outer top side, and an adjustable stainless steel ring on its inner circumference to press it against the frame. When Aqua-Blok is placed in the cone, it uses a rubber mount placed within the cone to mount Aqua-Blok. The rubber mount has a core with concentric rubber rings on its outer periphery that match the sloped sides of the cone. It has a circular cavity in its inner circumference to receive the pressure ring. The pressure ring forces the core and the concentric rings against the wall of the cone in a watertight fit. The bowl is seated on the mount where it catches any water that flows into the manhole from above it.

REFERENCES:
patent: 3308727 (1967-03-01), Hurt
patent: 4097171 (1978-06-01), Fier
patent: 4469467 (1984-09-01), Odill et al.
patent: 4650365 (1987-03-01), Runnels
patent: 4867601 (1989-09-01), Bowman
patent: 4957389 (1990-09-01), Neathery
patent: 5232120 (1993-08-01), Dunken et al.
patent: 5299884 (1994-04-01), Westhoff et al.

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