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. 21, 2013
Filed:
Oct. 27, 2010
Akimichi Nagaura, Yokkaichi, JP;
Mamoru Nakano, Yokkaichi, JP;
Akimichi Nagaura, Yokkaichi, JP;
Mamoru Nakano, Yokkaichi, JP;
Mitsubishi Materials Corporation, Tokyo, JP;
Abstract
A manufacturing apparatus of silicon seed rod in which two silicon seed rods are joined into one long silicon seed rod by welding, having: an upper seed rod holding part holding an upper silicon seed rod vertically; an elevating device holding a lower silicon seed rod which faces a lower end of the upper silicon seed rod in a state in which the lower silicon seed rod is movable vertically; an induction-heating coil being arranged around the lower end of the upper silicon seed rod; a preheating ring being disposed below the induction-heating coil; and a moving device of the preheating ring that moves the preheating ring between a heat position in which the preheating ring is induction-heated around an upper end of the lower silicon seed rod by the induction-heating coil and a wait position which is distant from the heat position.