Pipe joint

Details Pipe joint Pipe joint

2007-11-27

2007-11-27

Bochna, David (Department: 3679)

Pipe joints or couplings

Nonmetal to metal

Internal member

C285S389000, C285S249000

Reexamination Certificate

active

11229692

ABSTRACT:
A pipe joint provided with a joint main body having a male screw portion and a cap nut screwed on the male screw portion of the joint main body. And, the pipe joint has an outer-fitting cylinder portion and an insertion cylinder portion holding an end portion of an elastically deformable connected pipe on inner and outer sides. And, a C-shaped stop ring, having a slit on its periphery and disposed within a tapered portion of a hole portion of the cap nut, is provided. The stop ring has a holding female portion formed through an inner peripheral face and a peripheral face of the stop ring. A rotator, held within the holding female portion as to rotate, touching the tapered portion of the hole portion of the cap nut, elastically forming a peripheral concave groove on a peripheral face of the pipe, and deforming the end portion of the pipe into a tapered portion increasing in diameter, is provided.

REFERENCES:
patent: 2283975 (1942-05-01), Dillon
patent: 2570224 (1951-10-01), Fason
patent: 2628111 (1953-02-01), Smalline
patent: 3653688 (1972-04-01), Sakakibara
patent: 4223919 (1980-09-01), Kurachi
patent: 4606564 (1986-08-01), Kurachi
patent: 262498 (1990-03-01), None
patent: 3122385 (2000-10-01), None
patent: 3122385 (2002-10-01), None

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