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:
Dec. 28, 2010
Filed:
Nov. 09, 2007
Kai Wallhaeusser, Graben-Neudorf, DE;
Gerhard Thome, Kronau, DE;
Willi Arnold, Rohrbach, DE;
Eichenauer Heizelemente GmbH & Co. KG, Kandel, DE;
Abstract
The invention relates to a heating device for diesel fuel comprising at least one PTC heating element (), at least two contact sheets () each comprising a front face () by means of which they contact the PTC heating element () electrically, wherein the PTC heating element () is provided between the front faces () of the two contact sheets (); a plastic housing () enclosing an interior space through which the diesel fuel to be heated can flow and in which the PTC heating element () and the contact sheets () are provided. According to the invention, it is provided that the front faces () of the contact sheets () project, on at least one longitudinal side, over the PTC heating element () so that a gap is provided between the opposing front faces () of the contact sheets (), that the housing () comprises positioning elements () projecting into its interior space, engaging into the gap and, as a stop, securing the PTC heating element () against lateral displacement, and that the contact sheets () each have at least one leg () bent away from the front face () and being pressed into the housing () with prestress so that the front faces () of the contact sheets () are pressed against the PTC heating element () by spring forces exerted by the legs ().