Multi-ring gasket

Details Multi-ring gasket Multi-ring gasket

1992-06-05

1994-11-08

Bradley, P. Austin

Pipe joints or couplings

Packed

Flanged pipe

285910, 277207A, F16J 1500

Patent

active

053621158

ABSTRACT:
A multi-ring gasket and flanged pipe joint assembly. A gasket for sealing the joint between two flanged pipes of polyvinylchloride, chlorinated polyvinylchloride or fiberglass-reinforced plastic pipe is provided. The gasket has an inner ring, an outer ring and a plurality of spokes connecting the inner ring to the outer ring. Voids, or reduced thickness areas, are formed between the inner ring, the outer ring and the spokes so as to leave substantial space between the flanges at the voids and thereby reduce the uneven distribution of stress on the flanges when the gasket is installed.

REFERENCES:
patent: Re11858 (1900-09-01), Merwarth
patent: 925770 (1909-06-01), Herrick
patent: 2532891 (1948-09-01), Chupp
patent: 2871035 (1959-01-01), Kaiser
patent: 3141686 (1964-07-01), Smith et al.
patent: 3302953 (1967-02-01), Glasgow
patent: 3387867 (1968-06-01), Rogers
patent: 4269417 (1981-05-01), Dutton
patent: 4388259 (1983-06-01), Jewell et al.
patent: 4516784 (1985-05-01), Merz
patent: 4756561 (1988-07-01), Kawata et al.
patent: 4778189 (1988-10-01), Udagawa

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