Mask stripper for electroform parting
US5254239A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1993 |
| Grant date | Oct 19, 1993 |
| Priority date | — |
| Expiry date | Apr 26, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D1/20
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for separating an electroformed article from a mandrel comprising: (a) masking a portion of a mandrel with a mask comprising an electrically nonconductive outer surface; (b) electroforming an article on the mandrel wherein the electroforming material is deposited on the mandrel surface but fails to adhere to the nonconductive outer surface of the mask, whereby the end of the electroformed article is adjacent to the mask; and (c) removing the article from the mandrel by either: (i) pushing the mask against the end of the article to effect movement of the article in the direction of separation; or (ii) removing the mandrel while keeping the mask stationary, whereby the end of the article pushes against the mask during withdrawal of the mandrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.