Back to results
US 4,055,391 AGranted
Crucible
AssigneeProlizenz AG
InventorsWalter Schmidt, Walter Stahlin
Life of this patent
Estimating the term…
Abstract
A crucible, especially for containing melts, has a multichamber construction wherein there is an outer chamber for containing a heat distribution medium and an inner chamber which acts as a receptacle for the melt.
Claims11
A crucible, for use in heating a melt,
- comrising in combination,
- an outer wall and an inner wall of iridium defining an inner chamber to receive said melt;
- said outer and inner walls defining therebetween an outer chamber operable to receive a heat distribution medium at least partially filling said outer chamber and having a melting point above about 1500.degree. C and which is below the melting point of said melt and a boiling point above about 1750.degree. C which is above the melting point of said melt, said inner body separating said chambers preventing direct liquid communication between said chambers.
Dependencies are inferred from the claim text.