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:
Jul. 07, 2015
Filed:
Nov. 09, 2012
Borgwarner Beru Systems Gmbh, Ludwigsburg, DE;
Jochen Hammer, Stuttgart, DE;
Michael Eberhardt, Neckargemuend, DE;
Johannes Hasenkamp, Ludwigsburg, DE;
Stefan Knoll, Oelbronn, DE;
Markus Schittkowski, Ludwigsburg, DE;
Martin Allgaier, Ludwigsburg, DE;
BorgWarner Ludwigsburg GmbH, Ludwigsburg, DE;
Abstract
The invention relates to a glow plug for a diesel engine, said glow plug comprising a ceramic glow pencil, which has a heating portion, and a housing, from which the glow pencil protrudes, wherein the glow pencil has a ceramic inner conductor, an insulation layer surrounding the inner conductor, and a ceramic outer conductor layer arranged on the insulation layer. In accordance with this disclosure, the outer conductor layer in the heating portion only partially covers the insulation layer.