Expanding mandrel

Details Expanding mandrel Expanding mandrel

1984-09-26

1987-02-17

Hoag, Willard E.

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

425388, 425393, 425403, 425441, 425445, 425457, 425DIG218, B29C 5130, B29C 5110

Patent

active

046436588

ABSTRACT:
A vaccuum mandrel for forming a plastic pipe and inserting a seal ring in a groove in the pipe. The mandrel has plural segments mounted on inclined dowels so as to be expandible.

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