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:
Mar. 27, 2001
Filed:
Oct. 28, 1997
Applicant:
Inventors:
Akira Uchikawa, Nagoya, JP;
Yasutoshi Yamanaka, Kariya, JP;
Takaaki Sakane, Nagoya, JP;
Satomi Muto, Nishikasugai-gun, JP;
Homare Koutate, Nagoya, JP;
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F28D 7/10 ;
U.S. Cl.
CPC ...
F28D 7/10 ;
Abstract
According to the present invention, a first tube is constructed by connecting a plate material into a tubular shape. In the manufacturing process, after an inner fin is disposed around an outer wall of a second tube, the first tube is disposed around the second tube, and the first tube and the second tube are fixed by connecting the plate material in such a manner that the inner fin is in contact with the both tubes. In this way, the inner fin and both tubes are certainly contacted closely to each other without enlarging the second tube.