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:
Nov. 01, 2005
Filed:
Jul. 11, 2002
Applicants:
Mikio Yamamoto, Hiroshima, JP;
Atsushi Higashio, Hiroshima, JP;
Hideaki Furumoto, Hiroshima, JP;
Inventors:
Assignee:
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21B037/08 ;
U.S. Cl.
CPC ...
Abstract
Hydraulic cylinders are provided in a housing so as to be opposed to work rolls and backup rolls. Before a front end portion of a rollable material is engaged between the work rolls, the working oil pressure of the hydraulic cylinders is set at a high pressure value to make a pressing force on roll chocks high. After the rollable material is completely engaged between the work rolls, the working oil pressure of the hydraulic cylinders is set at a low pressure value to make the pressing force on the roll chocks low.