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, 1997
Filed:
Dec. 22, 1995
Dieter Bauer, Stuttgart, DE;
Ralf Bochert, Remseck, DE;
Herbert Damsohn, Aichwald, DE;
Werner Helms, Esslingen, DE;
Roland Hemminger, Esslingen, DE;
Herbert Hunzelmann, Marxzell, DE;
Volker Kurz, Stuttgart, DE;
Roland Schirrmacher, Ludwigsburg, DE;
Walter Wolf, Oppenweiler-Zell, DE;
BEHR GmbH & Co., Stuttgart, DE;
Abstract
A heat exchanger, produced by the insertion of welded pipes into a rib pack, has a good connection between the rib pack and the pipes after expansion of the pipes. An optimal contact of the pipes against the passages in the cooling fins of the rib pack is achieved because the weld base of the welded pipe lies in a recess. The recess is formed by reduction of the wall thickness of a strip material from which the welded pipe is produced.