Gasket and method of casting same in a wall
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United States of America Patent
Stats
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Jun 25, 1996
Grant Date -
N/A
app pub date -
Feb 18, 1994
filing date -
Feb 18, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An annular gasket is disclosed which may be used in concrete manhole structures and pipe structures. An embodiment of the invention includes an annular body positioned to lie in a joint between two surfaces such as a wall and an outer surface of a pipe or an inner surface of one pipe and the outer surface of another pipe, structure for anchoring the body within the wall or pipe so that the body lies adjacent the wall or pipe, a sleeve having first and second folds, structure for coupling the sleeve to the body so that the sleeve is movable between a folded position adjacent the body and an unfolded position around the outer surface of the pipe, and structure for the securing the sleeve in the folded position.
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