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. 09, 1997
Filed:
Sep. 21, 1995
Herbert Damsohn, Aichwald, DE;
Karl-Gerd Krumbach, Burgstetten, DE;
Michael Loehle, Esslingen, DE;
Eberhard Zwittig, Hochdorf, DE;
Behr GmbH & Co., Stuttgart, DE;
Abstract
An electric heating device includes a plurality of heating elements which are assembled to form a block. Such a heating element is formed from two metal plates, with the interposition of PTC elements. In order to increase the heat transfer, the metal plates are provided with corrugation ribs. Each heating element includes a pair of metal plates which are angled off essentially in the form of an L such that the angled-off sections are connected in a frictionally locking manner to each other. The angled-off sections are arranged at opposite ends of the heating elements and angled in opposite directions, the length of the angled-off sections of the metal plates being dimensioned such that angled-off sections of one pair of metal plates are in mutual abutment with angled-off sections of respectively adjacent pairs of metal plates.