Pipe coupling gasket insert

Details Pipe coupling gasket insert Pipe coupling gasket insert

1992-07-06

1993-10-05

Reese, Randolph A.

Pipe joints or couplings

With fluid pressure seal

Flexible lip

285373, 285910, F16L 17035

Patent

active

052498298

ABSTRACT:
A pipe coupling gasket insert is provided for optional use within a conventional C-shaped in cross-section, resilient gasket which is fitted within a conventional rigid C-shaped in cross-section coupling formed for encircling and coupling together the end portions of a pair of co-axially arranged, adjacent pipe end portions. The gasket has band-like lips formed on its inner portions for encircling and engaging the surfaces of the respective pipe end portions with the lips having free edges that are spaced apart. The pipe ends are slightly gaped apart. The insert, form of a resilient ring, is manually positioned within the gasket, for engaging the base of the C-shaped gasket, and has a radially inwardly extending rim that extends between the free edges of the gasket lips for engaging the end portions of the adjacent pipes and spanning the gap therebetween. The insert rim portion may be shaped to extend into gap or over the gap for sealing the gap between the adjacent pipe ends.

REFERENCES:
patent: 2295510 (1942-08-01), Ball et al.
patent: 2449795 (1948-09-01), Stillwagon
patent: 2486451 (1949-11-01), Warren
patent: 3291506 (1966-12-01), Blakeley
patent: 3351352 (1967-11-01), Blakeley et al.
patent: 3454287 (1969-07-01), Thiessen
patent: 3834744 (1974-10-01), Masatchi
patent: 4643461 (1987-02-01), Thau, Jr. et al.
patent: 4717179 (1988-01-01), Haberstock et al.
patent: 4872712 (1989-10-01), Maier

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