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:
Aug. 21, 2001
Filed:
Jun. 27, 2000
Applicant:
Inventor:
Yukio Kusakabe, Kobe, JP;
Assignee:
Kusakabe Electric & Machinery Co., Ltd., Kobe, JP;
Primary Examiner:
Int. Cl.
CPC ...
B21B 1/310 ;
U.S. Cl.
CPC ...
B21B 1/310 ;
Abstract
A three-roll-type reducing mill including three forming rolls brought into contact with an outer periphery of an electro-resistance-welded steel tube for reducing its diameter. Two left and right sliding brackets respectively mounted with two follower forming rolls are sidden symmetrically with respect to a center of a main forming roll and simultaneously only by rotation of a single adjusting screw shaft, thereby enabling the diametrical reduction of the steel tube to be adjusted on-line and speedily.