Means for producing high precision castings
US5183095A · kind A · utility
9Cited by
13References
10Claims
0Family size
Inventor
Key dates
| Filing date | Nov 30, 1990 |
| Grant date | Feb 2, 1993 |
| Priority date | — |
| Expiry date | Nov 30, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S164/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The production of high precision molds and castings for dental prosthesis and the like is enhanced with a casting ring and sprue former base constructed of a clear expandable thermoplastic. The ring and base are telescopically interlockable with each other to define a vessel containing a mold form strategically disposed therein so that as investment solution poured throughout is able to cure without detracting from the precise measurements of the mold form to provide a true mold from which precisely dimensioned castings are formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.