Method and apparatus for pre-compacting molding sand
US5947185A · kind A · utility
3Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1998 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | Mar 23, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C15/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Molding sand filled in a space defined by a pattern plate and a flask is pre-compacted before the molding sand is completely pressed. A pre-compacting member is inserted into the molding sand toward the pattern plate, and then is stopped based on a predetermined depth of the pre-compacting member in the molding sand or a predetermined pressure caused by the pre-compacting member in the molding sand.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.