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. 22, 2003
Filed:
Mar. 11, 2002
Shinichi Morihira, Kariya, JP;
Kiyokazu Futami, Oobu, JP;
Yuuji Sako, Aichi-pref, JP;
Keiichi Yoshii, Anjo, JP;
Denso Corporation, Kariya, JP;
Abstract
Residual stress generated in strip metal W is removed by annealing the strip metal W which has gone through a pressing process, and a compressing process is implemented thereafter whereby, as portions hardened due to work-hardening (in particular, folded portions ) can be softened, the strip metal W which has gone through the pressing process can be easily compressed so that the radius of curvature of the folded portions is reduced to a predetermined dimension, thereby making it possible to improve the dimensional accuracy of the finished fin even if the fin is made of a metal having a relatively high hardness (stainless steel).