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. 23, 2000
Filed:
Sep. 04, 1997
Applicant:
Inventors:
Masao Mikami, Fujisawa, JP;
Masahiro Kuchi, Chigasaki, JP;
Sadahiko Shinya, Kanagawa-ken, JP;
Takayuki Iwasaki, Yokohama, JP;
Takashi Nishii, Yokohama, JP;
Assignee:
Ishikawajima-Harima Jukogyo Kabushiki Kaisha, Tokyo-to, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21B / ;
U.S. Cl.
CPC ...
722525 ;
Abstract
Each of a pair of rolls has a barrel with different diameters axially of the barrel such that sum of the diameters of the barrels is substantially constant and that each of the rolls is bilaterally symmetrical. The rolls themselves have an ability to control workpiece profile and have at least one substantially parallel center portion.