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:
Jan. 24, 2006
Filed:
Dec. 19, 2003
Tatsuo Ozaki, Okazaki, JP;
Masanobu Toyoda, Obu, JP;
Tatsuo Ozaki, Okazaki, JP;
Masanobu Toyoda, Obu, JP;
DENSO Corporation, Kariya, JP;
Abstract
A wave-shaped portion, the profile of which is formed into a wave-shape, is provided on the core plate, and tubes are brazed to the core plateunder the condition that the tubes are inserted into holesformed in bent portions. Due to the above structure, even when a pitch between the tubes is reduced, it is possible to ensure a sufficiently high mechanical strength of the core plate. Accordingly, the occurrence of a big difference in the mechanical strength between the core plateand the tubes can be suppressed. Therefore, stress concentration at a joint portion of the core plateand the tubes can be prevented. As a result, the mechanical strength of a radiator and the reliability (durability) of the joint portion of the core plateand the tubes can be enhanced.