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. 07, 1988
Filed:
Feb. 04, 1987
Applicant:
Inventors:
Wilfried von Ammon, Burghausen, DE;
Heinz Klinger, Altotting, DE;
Assignee:
Wacker Chemitronic Gesellschaft, Burghausen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F / ; H01F / ;
U.S. Cl.
CPC ...
219 1079 ; 336223 ; 336232 ;
Abstract
An induction heating coil for a zone pulling of semiconductor rods assures the disturbance-free performance of the pulling process even at the high power densities required for large rod diameters (approximately 10 to 12 cm). According to the invention, the arc-over paths between surfaces in the region of the coil slot, which are at differing potentials, are covered by one or more movable planar structures of temperature-stable insulating material which are introduced into the coil slot.