Expandable mandrel

Details Expandable mandrel Expandable mandrel

1980-08-18

1981-06-30

Tufariello, T. M.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204 9, C25D 102, C25D 110

Patent

active

042761484

ABSTRACT:
The mandrel herein is used for making seamless hollow cylinders by electrolytically forming cylinders on the expandable and contractable mandrel. The mandrel has an inflatable outer surface or jacket which permits it to be expanded or contracted for holding or removing the electroformed cylinder therefrom. The inflatable jacket is backed up by a perforated metal core.

REFERENCES:
patent: 3763030 (1973-10-01), Zimmer
patent: 4177113 (1979-12-01), Seibt
U.K. Patent Appln. No. GB 2,011,473 A published Jul. 11, 1979.

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