Electroforming mandrels
US5389227A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1993 |
| Grant date | Feb 14, 1995 |
| Priority date | — |
| Expiry date | Nov 26, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D1/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.