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:
May. 16, 1995
Filed:
May. 14, 1993
Applicant:
Inventors:
Franz Hugo, Aschaffenburg, DE;
Hans G Fellmann, Obertshausen, DE;
Assignee:
Leybold Durferrit GmbH, Cologne, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F27D / ;
U.S. Cl.
CPC ...
373142 ; 373156 ; 373158 ;
Abstract
A crucible 1 of an induction melting apparatus has a cover 3 closing the crucible off hermetically and having a connection 5 for attaching the cover to a vacuum source 6. At the bottom the crucible 1 has a prolongation 7 in which a mold 9 is sealingly disposed. Thus, the mold 9 is evacuated together with the crucible 1 so that a vacuum chamber enveloping the crucible 1 and the mold (9) is unnecessary.