Method and apparatus for securing a pipe to a fitting

Details Method and apparatus for securing a pipe to a fitting Method and apparatus for securing a pipe to a fitting

1979-03-30

1981-10-06

Arola, Dave W.

Pipe joints or couplings

With assembly means or feature

Particular tool-engaging means or with tool

285242, 285259, 29237, 29506, 29525, F16L 3500

Patent

active

042931479

ABSTRACT:
A method for connecting a plastics pipe to a fitting incorporating an externally grooved insert. The insert, which is a tight fit in the pipe, is forced into the end of the pipe, and a sleeve, previously located on the pipe, is then forced to the end of the pipe so that the pipe end is tightly gripped between the insert and the sleeve. The insert is tubular and is provided with a plurality of circumferential grooves in its outer surface. Each groove has in axial section substantially straight sides and a straight base, the angle between the base and each side being obtuse. Insertion of the insert causes the external diameter of the pipe to increase so as to be greater than the internal diameter of the sleeve.

REFERENCES:
patent: 2230115 (1941-01-01), Kreidel
patent: 3222091 (1965-12-01), Marshall
patent: 3257132 (1966-06-01), Lyons
patent: 3408099 (1968-10-01), Appleton
patent: 3599310 (1971-08-01), Browniee
patent: 3978572 (1976-09-01), Jackman

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