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:
Jan. 31, 1978
Filed:
Dec. 23, 1976
Michio Nishikubo, Muroran, JA;
Sei Miura, Muroran, JA;
Toshiaki Toyoda, Muroran, JA;
Katsunori Jonishi, Muroran, JA;
Kouichi Yoneta, Muroran, JA;
Nippon Steel Corporation, Tokyo, JA;
Abstract
In the rolling of metal material to round cross-sectional shape through a succession of three roll stands with the horizontal-horizontal-vertical, or vertical-vertical-horizontal rolls arranged in this order in the rolling down direction for achievement of increased accuracy of dimensional control at finish, an initial metal stock of specific oval cross-section is rolled to an intermediate and small reduction through the first and second stands forming specific oval groove, and then to a finish and small reduction through the third stand forming a round groove.