Cores formed with connecting cavities for receiving connecting sand
US5829511A · kind A · utility
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1Claims
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Key dates
| Filing date | Dec 29, 1997 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | Dec 29, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C9/103
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Cores have a plurality of cavities defined by adjacent vertical side surfaces of two adjacent cores. These cavities are arranged horizontally and spaced apart along the surfaces. Providing such a plurality of cavities in the surfaces produces an increased total surface area extending in the direction where the cores mate or separate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.