Apparatus for making a tool
US4460449A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 3, 1983 |
| Grant date | Jul 17, 1984 |
| Priority date | — |
| Expiry date | Jan 3, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D1/10
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A tool for producing a pattern of highly accurate and optical quality surfaces and the method of making same from a series of bi-metallic pins. A high strength metal pin is coupled to a slug of metal of lesser strength capable of being accurately scribed. The supporting pin blank preferably is magnetic stainless steel and the slug is of copper. A group of such bi-metallic pins then is placed in an appropriate fixture after which an optical configuration, such as the three faces of a cube-corner element, are scribed into the copper ends. A completed tool may then be electroformed to produce an electroformed tool from an array of like or different pins, arranged in various patterns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.