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:
Jun. 06, 2000
Filed:
Dec. 22, 1997
Applicant:
Inventors:
Claus Beck, Esslingen, DE;
Jurgen Hagele, Stuttgart, DE;
Assignee:
Behr GmbH & Co., Stuttgart, DE;
Primary Examiner:
Int. Cl.
CPC ...
F15D / ;
U.S. Cl.
CPC ...
138 38 ; 138 39 ; 138177 ; 138D / ; 138D / ;
Abstract
A process for mounting lugs or projections on a thin metal sheet, by forming the lugs and/or projections out of the thin metal sheet by way of massive forming. Such a thin metal sheet in the form of a thin sheet metal strip is used preferably for forming rectangular tubes for an exhaust gas heat transfer device which, for guiding the exhaust gas, is provided with a bundle of these rectangular tubes.