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:
Jun. 09, 1992
Filed:
Jul. 30, 1990
Applicant:
Inventors:
Franz Hugo, Aschaffenburg, DE;
Erwin Wanetzky, Grosskotzenburg, DE;
Assignee:
Leybold Aktiengesellschaft, Hanau, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F27D / ;
U.S. Cl.
CPC ...
373142 ; 373 76 ; 373 77 ; 373 78 ; 373138 ; 373140 ; 373141 ;
Abstract
The invention relates to an induction melting furnace 1 for metals which are difficult to melt including an induction coil 2 surrounding the crucible 3 and a mold receptacle 4 surrounded by an annular chamber 5 to hold the cooling agent. The crucible 3 is disposed in a housing 7 provided with a vacuum connection 6. In order to improve the microporous nature, the melt contained in the mold receptacle 4 is compressed by means of a pressure which is build up in the mold receptacle 4 prior to the cooling.