Composite gasket and fitting including same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 15, 1987
Issued Date -
N/A
app pub date -
Jan 18, 1985
filing date -
Jul 13, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A composite gasket for forming a seal between a pipe bell 52 and a spigot 58 comprises a major portion 12 of non-elastomeric plastic material and a minor portion 14 of elastomeric material. The minor portion is axially encased by the major portion. The minor portion includes a sealing lip 16 extending radially inwardly from the major portion. The composite gasket can be manually inserted within a preformed grooved bell or the grooved bell can be formed over the gasket while the gasket is mounted on a mandrel. The composite gasket is particularly useful with relatively large diameter pipe systems.
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Cited Art Landscape
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