Vacuum sealed molding process for producing molds having a deep concave portion or a convex portion
US3955266A · kind A · utility
41Cited by
9References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1974 |
| Grant date | May 11, 1976 |
| Priority date | — |
| Expiry date | Apr 26, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49826
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A molding process for casting operations in which castings having a deep concave portion or a high convex portion such as pots and bathtubs are cast using vacuum sealed molds on which films are applied to be in tight contact with them, and a film forming auxiliary device for use in molding such vacuum sealed molds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.