Means for producing high precision castings
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United States of America Patent
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-
Feb 2, 1993
Grant Date -
N/A
app pub date -
Nov 30, 1990
filing date -
Nov 30, 1990
priority date (Note) -
Expired
status (Latency Note)
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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.
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