Pipe joint

Details Pipe joint Pipe joint

1995-11-22

1997-01-14

Arola, Dave W.

Pipe joints or couplings

Essential catch

285319, 285914, 285921, 285 38, F16L 3708

Patent

active

055931871

ABSTRACT:
A pipe joint for joining two pipes end to end comprises a hollow cylindrical spigot portion having an annular projection on the outer periphery of a base end thereof, a hollow cylindrical socket portion having an inside diameter approximately equal to the outside diameter of the spigot portion and formed with two opposed apertures in its peripheral wall close to a forward end thereof and with a stepped part on the inner surface of the peripheral wall for the projection to come into contact with, the stepped part being closer to a base end of the socket portion than the apertures, and a stopper having a pair of circular-arc resilient legs fittable into the respective apertures from outside to project inward and each having a slanting inner surface, the legs being opposed to each other for the inwardly curved surfaces thereof to face each other. The projection is fixedly held between the stepped part and the legs by inserting the stopper into the apertures with the slanting surfaces facing toward the insertion side of the spigot portion and inserting the spigot portion into the socket portion until the projection moves past the legs. The spigot and socket portions are provided at the joint ends of the two respective pipes to be joined.

REFERENCES:
patent: 3314696 (1967-04-01), Ferguson et al.
patent: 3534988 (1970-10-01), Lindsey
patent: 3628768 (1971-12-01), Hutt
patent: 3753582 (1973-08-01), Graham
patent: 4244608 (1981-01-01), Stuemky
patent: 4423892 (1984-01-01), Bartholomew
patent: 4813716 (1989-03-01), Lalikos et al.
patent: 4869534 (1989-09-01), Ketcham et al.
patent: 5154450 (1992-10-01), Washizu
patent: 5211427 (1993-05-01), Washizu et al.

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