Pipe bell end having a thickened portion and apparatus for formi

Details Pipe bell end having a thickened portion and apparatus for formi Pipe bell end having a thickened portion and apparatus for formi

1975-08-26

1977-02-08

Artis, Henry K.

Pipes and tubular conduits

Combined

With end structure

F16L 900, F16L 1100

Patent

active

040067572

ABSTRACT:
A bell end on a pipe of thermoplastic material has variable wall thickness in the axial direction, the maximum being where the inner wall acts as a sealing face. The bell end can be formed by upsetting the pipe wall into the cavity between a mandril and a shaping sleeve.

REFERENCES:
patent: 3520047 (1970-07-01), Muhlner et al.
patent: 3887674 (1975-06-01), Oostenbrink
patent: 3893794 (1975-07-01), Acda
patent: 3907481 (1975-09-01), Heisler

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