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. 16, 2003
Filed:
Aug. 14, 2001
Applicant:
Inventors:
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F28F 1/300 ;
U.S. Cl.
CPC ...
F28F 1/300 ;
Abstract
Waved uneven portions ( ) are formed on the protrusion portions ( ) of the fins ( ) protruded from an end of the tubes ( ) in the width direction of the tube without cutting part of the protrusion portions ( ) to increase the surface area of the fins ( ). As a result, the surface area of the protrusion portions ( ) may be increased without decreasing the thermal conductive area extending to the end of the protrusion portions ( ), and thereby a sufficient amount of heat may be conducted especially to the protrusion portions ( ), with decreasing airflow resistance, and an improvement in radiation ability appropriate to the increase of radiation area may, accordingly, be achieved.