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:
Sep. 23, 2003
Filed:
Apr. 26, 2002
Applicant:
Inventors:
Juergen Haegele, Stuttgart, DE;
Volker Kurz, Stuttgart, DE;
Assignee:
Behr GmbH & Co., Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F28F 1/00 ;
U.S. Cl.
CPC ...
F28F 1/00 ;
Abstract
A folded multi-passageway flat tube is disclosed, which is made from a flat sheet metal strip and has folded webs and a longitudinal seam. Through-openings for improving the heat transfer and for generating transverse flow are provided in the folded webs. The through-openings are advantageously made by punching in the flat sheet metal strip, that is to say before folding, and are made congruent after folding. These folded multi-passageway flat tubes are preferably used for refrigerant condensers in motor vehicle air-conditioning systems.