Pipe fitting

Details Pipe fitting Pipe fitting

1975-10-31

1977-04-19

Callaghan, Thomas F.

Pipe joints or couplings

With fluid pressure seal

Flexible lip

29508, 29516, 2853822, 2853827, 285423, F16L 1314

Patent

active

040184625

ABSTRACT:
A pipe fitting characterized in that a press ring is fitted around the external surface of a pipe made of an elastic material, another pipe to be joined is inserted into said pipe, reducing the diameter of said press ring from outside, and at the same time causing to bulge out a part of said press ring whereby said pipe and the other pipe are pressedly joined.

REFERENCES:
patent: 1930194 (1933-10-01), Dillon
patent: 2314236 (1943-03-01), Mott
patent: 2614304 (1952-10-01), Oetiker
patent: 3244441 (1966-04-01), Caudle
patent: 3376060 (1968-04-01), Tomioka
patent: 3378282 (1968-04-01), Demler
patent: 3429587 (1969-02-01), Kish
patent: 3477750 (1969-11-01), Powell
patent: 3675949 (1972-07-01), Dawson
patent: 3874709 (1975-04-01), MacDonald
patent: 3915480 (1975-10-01), Kish et al.
Japanese Patent Public Disclosure No. 128821/1975, published or disclosed date-Oct. 11, 1975, copy of the reference is in the file of this application and was filed by applicant on Oct. 31, 1975.

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