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. 12, 2015
Filed:
Dec. 17, 2007
Akihito Yamane, Osaka, JP;
Akihito Yamane, Osaka, JP;
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Abstract
A rolling standin accordance with the invention is a rolling stand provided with three grooved rolls for rolling a tubular or bar shaped material to be rolled, in which three grooved rolls Rto Rare arranged in such a manner that an angle formed by pressing directions of any two adjacent grooved rolls of the three grooved rolls Rto Rcomes to 120 degrees. With regard to a cross sectional shape of each of the grooved rolls Rto Rformed by cutting each of the grooved rolls in a plane which includes a center line of a rotating axis of each of the grooved rolls Rto Rand is orthogonal to a pass line of a material to be rolled, any one grooved roll Ris provided with a first straight portion Lextending vertically to the pressing direction in both side flange portions, and the other two grooved rolls Rand Rare provided with a second straight portion Lopposing to the first straight portion Land extending in parallel to the first straight portion Lin the flange portions.