Apparatus for making mold
US5996678A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1998 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Aug 26, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C15/28
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The apparatus comprises a table (5), on which a pattern plate (6) is attached, a flask (7), the bottom surface of which can be fitted to the pattern plate (6), a filling frame (30), the bottom surface of which can be fitted to the upper surface of the flask (7), and in which the highest part of its opening is smaller than the lowest part of its opening, a blow head (17), which is used for blowing in molding sand, and for squeezing the blown-in molding sand, and which is placed above the table (5), and a thin plate body (20), which can be inserted into the blown-in molding sand and which is placed around a sand holder (12) that is a part of the blow head (17), in which the highest part of the opening of the filling frame (30) has such a size that the outer surface of the thin plate body (20) can contact the inner surface of the highest part of the filling frame (30), and in which the size and shape of the lowest part of the opening of the filling frame (30) are the same as those of the opening of the flask (7).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.