Pipe gasket with embedded ring

Details Pipe gasket with embedded ring Pipe gasket with embedded ring

1998-08-26

1999-11-23

Arola, Dave W.

Pipe joints or couplings

With fluid pressure seal

Flexible lip

285374, 285423, 285910, 264249, 277627, 425384, F16L 1702

Patent

active

059886951

ABSTRACT:
A pipe sealing gasket is shown which is designed to be received within a groove provided within a socket end of a thermoplastic pipe. The gasket has a ring shaped body of an elastomeric material and includes a metal reinforcing ring. The elastomeric body includes a first portion of relatively low durometer rubber and a second portion of a relatively high durometer rubber. The regions of relative hardness and the placement of the reinforcing ring assist in retention of the gasket during the pipe belling process and in field installation.

REFERENCES:
patent: 2955322 (1960-10-01), Hite
patent: 3776682 (1973-12-01), Parmann
patent: 4030872 (1977-06-01), Parmann
patent: 4061459 (1977-12-01), Parmann
patent: 4120521 (1978-10-01), Parmann
patent: 4299412 (1981-11-01), Parmann
patent: 4368894 (1983-01-01), Parmann
patent: 4572523 (1986-02-01), Guettouche et al.
patent: 4693483 (1987-09-01), Valls
patent: 4818209 (1989-04-01), Petersson et al.
patent: 4834398 (1989-05-01), Guzowski et al.
patent: 5213339 (1993-05-01), Walworth

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