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:
Oct. 31, 2000
Filed:
Jun. 07, 1999
Applicant:
Inventors:
Assignee:
DENSO Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23P / ; B21D / ; B21D / ;
U.S. Cl.
CPC ...
29890049 ; 29890054 ; 72180 ; 723796 ;
Abstract
A metallic corrugated plate applying to a cooling inner fin of a heat exchanger, wherein a bending angle .THETA. of an end bent ridge portion is smaller than bending angle .theta. of the other bent ridge portions. Thus, in case the bending angle .THETA. becomes large by a resilient force after forming the bent ridge portions, preventing a bending rigidity of the end bent ridge portion in the spreading direction from being reduced is possible. Accordingly, preventing the inner fin from being warped from substantially the center ridge of the bent ridge portion is attained.