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.

Date of Patent:
Jan. 28, 2003

Filed:

Jun. 11, 2001
Applicant:
Inventors:

Mikio Yamamoto, Hiroshima, JP;

Atsushi Higashio, Hiroshima, JP;

Hideaki Furumoto, Hiroshima, JP;

Naoki Morihira, Hiroshima, JP;

Kanji Hayashi, Hiroshima, JP;

Mitsuhiro Yoshida, Hiroshima, JP;

Kazuo Morimoto, Chiyoda-ku, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21B 3/107 ; B21B 3/132 ;
U.S. Cl.
CPC ...
B21B 3/107 ; B21B 3/132 ;
Abstract

Work rolls opposed to each other have shafts rotatably supported by upper and lower work roll chocks of a housing, a screw down device for applying a predetermined pressure to the upper work roll is provided in an upper portion of the housing, screw mechanisms capable of thrusting the work roll chocks in a horizontal direction are provided on an entry side or a delivery side of the housing, hydraulic cylinder mechanisms capable of thrusting the work roll chocks in the horizontal direction are provided on the other side, and contraction portions are provided in hydraulic supply and discharge pipes of the hydraulic cylinder mechanisms.


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