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:
Apr. 24, 2001
Filed:
Dec. 18, 1998
Applicant:
Inventors:
Kazuhiko Gogo, Saitama, JP;
Tomoo Oka, Saitama, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21D 5/388 ;
U.S. Cl.
CPC ...
B21D 5/388 ;
Abstract
A method for manufacturing a tapered rectangular pipe for a vehicle comprising the steps of forming the tapered rectangular pipe into the rectangular raw pipe by an extrusion forming under any optional irregular thickness condition in a first step. Then the rectangular raw pipe is reduced to form a tapered part to make a tapered, irregular thickness, rectangular pipe member in a second step.