Pipe joint sealing device
AssigneeHarry W. Skinner
InventorsHarry W. Skinner, Max D. Orn
Life of this patent
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Abstract
This invention relates to a pipe joint sealing device. The device includes an annular resilient body of rubber which is generally V-shaped in cross-section which defines inner and outer annular flanges or body portions. This annular body or rubber ring is fitted into the opening of a rigid concrete structure, such as a manhole, in fluid-type engagement therewith. This engagement is interlocking which prevents the accidental dislodgement of the rubber ring from the opening, and is achieved b casting the concrete into lockingengagement with the outer peripheral surface of the ring, this ring being provided with an annular anchor portion which in cross-section is of keystone shape.
Claims2
A pipe joint sealing device comprising an annular resilient body of rubber-like material, said body being generally of V-shaped cross-section which defines inner and outer annular body portions, a rigid concrete wall structure having an opening therein, said body being fitted into said opening in fluid-tight engagement therewith, said outer annular portion of said body having an interlocking engagement with said rigid structure provided by a socket-like portion in said structure which intimately engages said outer annular portion and holds the same against movement, the inside wall of one of said body portions having an annular relief therein which accommodates flexure of said rubber-like material theretoward relieving pressure against the pipe and concrete wall structure, and an elongated spreading element wedge-shaped in cross-section receiving between said annular body portions, said wall having at least one surface spaced from said socket-like portion thereby providing a corner portion of concrete between said surface and said socket-like portion.
Dependencies are inferred from the claim text.