The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 07, 1986
Filed:
Jul. 08, 1983
Friedrich-Carl Freytag, Munich, DE;
Josef Gediga, Bruchkobel, DE;
Rolf Ruthardt, Hanau am Main, DE;
Wolfgang Wagner, Neuberg, DE;
Leybold-Heraeus GmbH, Cologne, DE;
Abstract
An arrangement for controlling the pouring of a melt out of a crucible with a hole in the bottom which hole is blocked while the material is being melted with a closure plate that melts through locally as the result of heat transferred from the melt. To precisely establish the time at which the closure plate melts through, the plate is cooled from below while the starting material is being melted. Cooling is at least decreased and preferably terminated when it is time to pour out the melt. The plate can be cooled by a flow of a gas coolant directed against it or by contact with a cooling element that is raised into position against it from below.