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:
Feb. 07, 2006
Filed:
Feb. 29, 2000
Karl-heinz Staffa, Stuttgart, DE;
Hans-joachim Krauss, Stuttgart, DE;
Hagen Mittelstrass, Bondorf, DE;
Christoph Walter, Stuttgart, DE;
Bernd Dienhart, Cologne, DE;
Karl-Heinz Staffa, Stuttgart, DE;
Hans-Joachim Krauss, Stuttgart, DE;
Hagen Mittelstrass, Bondorf, DE;
Christoph Walter, Stuttgart, DE;
Bernd Dienhart, Cologne, DE;
Behr GmbH & Co., Stuttgart, DE;
Abstract
The invention relates to a collector tube () for a heat transfer unit. The tube comprises one or several slits () on the periphery thereof, whereby said slits are formed by a punch press without an inner die or by high-pressure shaping for inserting a respective flat tube. The invention also relates to a method for producing said collector tube (). According to the invention, a collector tube () is provided with an outer radius (D/2) to tube wall thickness (s) ratio of less than 5. The slits () are introduced preferably parallel to, or at an acute 2 angle to the longitudinal axis of the tube. The collection tube can be produced by bending a flat material and subsequently sealing the longitudinal slits arising from the bending process by soldering or welding. Said collector tube can be used, e.g. for gas coolers and evaporators for COair conditioning systems in motor vehicles.