Patent ID: 6577667
Filing Date: 2003-06-10
Classification: C03B,Y02P

Abstract:
A skull crucible for the melting or refining of glasses;1.1 with a crucible wall (1); 1.2 with a crucible bottom (3); 1.3 with an induction coil (9) which encloses the crucible wall (1) and by which high frequency energy can be coupled into the content of the crucible; 1.4 the crucible wall is formed by a ring of metal pipes (1.1) which can be connected to a cooling medium, with slots between mutually adjacent metal pipes (1.1); 1.5 the metal pipes (1.1) are bent off at their upper ends in such a way that, in a top view of the crucible wall (1), they extend outwardly and form a collar (2); 1.6 the collar (2) is enclosed by a further upper wall (4) whose upper edge projects beyond the plane of the collar (2), so that the melt covers the collar (2) during operation.