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:
Jul. 28, 1998
Filed:
Feb. 21, 1997
Applicant:
Inventors:
Yuji Hashimoto, Chiba, JP;
Takaaki Toyooka, Chiba, JP;
Motoaki Itatani, Chiba, JP;
Susumu Itatani, Chiba, JP;
Tsutomu Ide, Chiba, JP;
Assignees:
Kusakabe Electric & Machinery Co., Ltd., Hyogo-Ken, JP;
Kawasaki Steel Corporation, Hyogo-Ken, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21D / ; B21D / ; B21D / ;
U.S. Cl.
CPC ...
72 52 ; 72178 ; 72176 ;
Abstract
An apparatus for manufacturing a welded pipe. The apparatus includes a cage or cluster roller molding system. In either case, a rotary axis of each roller is slanted counterclockwise or clockwise with respect to a manufacturing line direction of the apparatus. The adjustable positioning of the rotary axis reduces vertical slip caused when the strip of material passes along the contact surface of the roller.