Forgiving profile pipe gasket

Details Forgiving profile pipe gasket Forgiving profile pipe gasket

1986-08-29

1987-05-12

Arola, Dave W.

Pipe joints or couplings

With fluid pressure seal

Flexible lip

285231, 285345, 285423, 285910, 277207A, F16L 1702

Patent

active

046644210

ABSTRACT:
A gasket particularly suited for providing a leak resistant, deflection tolerant seal for a bell and spigot type of pipe coupling is provided. The gasket comprises a rubber web having a plurality of identical sealing ribs projecting radially inward in axially spaced relation. Each rib has an enlarged tapered base portion and a narrow finger portion which inclines inwardly and axially therefrom in cantilever fashion and which terminates in a tip spaced radially from the base of an axially adjacent rib. The finger portions are deflected into engagement with their adjacent sealing ribs when the spigot portion of one pipe is inserted axially into the bell portion of the other in which the gasket is mounted. The sealing ring prevent leakage even when the coupled pipes are misaligned slightly.

REFERENCES:
patent: 2897533 (1959-08-01), Bull et al.
patent: 3057408 (1962-10-01), Griffitts
patent: 3124040 (1964-03-01), Friedler
patent: 3150876 (1964-09-01), Lafferty
patent: 3386745 (1968-06-01), Hein
patent: 4343480 (1982-08-01), Vassallo

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