Electroforming mandrels

Details Electroforming mandrels Electroforming mandrels

1993-11-26

1995-02-14

Niebling, John

Electrolysis: processes, compositions used therein, and methods

Electroforming or composition therefor

Roll, ring, or hollow body

72345, 164 46, 164132, 264335, 425437, 425438, C25D 102

Patent

active

053892275

ABSTRACT:
Methods and apparatus for separating a mandrel having a tapered end portion from an article formed thereon comprising: (a) providing the mandrel having an opening in the tapered end portion; (b) plugging at least a substantial portion of the opening with a member which presents a deposition surface for the formation of the article; (c) forming the article having a tapered end portion on the mandrel, including on the deposition surface of the member; and (d) pushing the member against the inside surface of the tapered end portion of the article to move the article away from the mandrel, thereby forming a gap between the article and the mandrel.

REFERENCES:
patent: 4711833 (1987-12-01), McAneney et al.
patent: 4902386 (1990-02-01), Herbert et al.
patent: 5021109 (1991-06-01), Petropoulos et al.
patent: 5064509 (1991-11-01), Melnyk et al.

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