Method of making tooling
US4220190A · kind A · utility
4Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 2, 1978 |
| Grant date | Sep 2, 1980 |
| Priority date | — |
| Expiry date | Nov 2, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C9/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of producing cast metal tooling, especially injection molds or dies, characterized by the steps of making a thin walled, investment cast shell which defines the functional cavity surface of the tooling, and casting a suitable backing metal against the shell to form a composite die or mold structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.