Permanent mold with core pulling device
US4462455A · kind A · utility
4Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1981 |
| Grant date | Jul 31, 1984 |
| Priority date | — |
| Expiry date | Mar 5, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D17/24
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A permanent mold is equipped with a core pulling device covered with a thin sand jacket, that can be peeled off, in order to produce unregular caves in the cast.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.