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:
Dec. 13, 2011
Filed:
Jan. 21, 2009
Hidehiko Nishino, Nishishirakawa, JP;
Yoshihiro Hirano, Nishishirakawa, JP;
Hidehiko Nishino, Nishishirakawa, JP;
Yoshihiro Hirano, Nishishirakawa, JP;
Shin-Etsu Handotai Co., Ltd., Tokyo, JP;
Abstract
A cylindrical grinding apparatus grinding a side face of a cylindrical ingot, having a centering means of at least three rollers and an arm holding the rollers. The cylindrical ingot is placed on a table longitudinally, its end faces being held vertically with a pair of clamps. Afterward, the centering means moves backward and forward against the ingot horizontally to bring the rollers into pressure contact with the side face of the ingot while the ingot is rotated about a central axis with a rotation means, and thereafter the ingot is ground with the grinding wheel. The cylindrical grinding apparatus and the method for grinding enable improvement of grinding processing efficiency of the ingot.