F - Mech Eng,Light,Heat,Weapons – 16 – J
Patent
F - Mech Eng,Light,Heat,Weapons
16
J
277/69, 26/80
F16J 15/10 (2006.01) B28B 23/00 (2006.01) E02D 29/12 (2006.01) F16L 5/10 (2006.01)
Patent
CA 1073938
ABSTRACT A gasket for resiliently supporting a sewer pipe in a manhole opening, while sealing the opening against fluid flow, which gasket is a molded annulus of elastomeric material having a peripheral flange of substantial width and thickness connec- ted by a radially extending web to an inner concentric rib of greater width than said web, and adapted to be embedded in con- crete to its radially inward face, said rib having an integral circular skirt extending inwardly therefrom in a non-radial direction, and united at its rim with a second circular skirt oriented thereto at a reverse angle, said second skirt merging throughout its periphery into an O-ring if slightly smaller diameter than the diameter of the sewer pipe it is adapted to surround.
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