Road structure – process – or apparatus – Pavement – Vault cover-closure
Patent
1991-09-26
1993-04-13
Neuder, William P.
Road structure, process, or apparatus
Pavement
Vault cover-closure
52 20, 156292, 156295, E02D 2914
Patent
active
052016005
ABSTRACT:
An apparatus and method is provided for providing a mold that can be filled with sealing material to establish a barrier seal on top of a manhole to block unwanted inflow of groundwater into the manhole through a space or gap between either the manhole and manhole frame or a pair of adjacent manhole sections. The apparatus includes a pair of circular channel rings that can be mounted on the top face of the manhole. The channel rings are arranged to form an annular sealing material-retaining channel therebetween. The channel rings are strong enough to support a heavy manhole frame (or another manhole section) above the manhole and in contact with the sealing material in the annular channel. The sealing material cures to establish a water-tight pliable seal bonding the manhole frame (or other manhole section) to the manhole.
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Gillentine Gregg A.
Topf, Jr. Henry E.
Miller Pipeline Corporation
Neuder William P.
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