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:
Dec. 23, 2003
Filed:
Aug. 21, 2001
Soichi Kato, Saitama, JP;
Muneo Sakurada, Saitama, JP;
Shin Kurihara, Saitama, JP;
Shoji Akiyama, Saitama, JP;
Jun Akaike, Saitama, JP;
Kazuo Ochiai, Saitama, JP;
Zexel Valeo Climate Control Corporation, Saitama, JP;
Abstract
A heat exchanger is comprising a core which is consisting of tubes provided with medium passages and fins fitted to the tubes, and tanks to which ends of the tubes are connected, wherein the tube ( ) is formed to have a flat cross-sectional shape by joining ends of one or two plates, the ends of the plates have a contact portion which is formed by bending at least one of the plate ends a plurality of times and overlaying the one end on the other end, and the contact portion is provided with a joint portion ( c) which is formed by placing a part ( e) of the contact portion on the top or bottom flat surface and mutually engaging the both ends of the plate.