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:
Jan. 21, 2003
Filed:
Feb. 23, 2000
Harold E. Durling, Elsie, MI (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
A spark plug having enhanced heat transfer capabilities is provided. The spark plug comprises a tubular insulator body, a center electrode and a thermally conductive filler material. The tubular insulator body has an inner surface, and the center electrode has an outer surface. The center electrode is positioned within the tubular insulator body such that a gap is formed between at least a portion of the inner surface of the tubular insulator body and at least a portion of the outer surface of the center electrode. The thermally conductive filler material has a high heat transfer coefficient. It is positioned within at least a portion of the gap so as to intimately contact the inner surface of the tubular insulator body and the outer surface of the center electrode. Positioned accordingly in the gap, the thermally conductive filler material enhances the ability of the spark plug to transfer heat away from the firing tip and into the body of the spark plug. This enables a designer to employ performance-improving features in a spark plug without the compromises inherent in currently used spark plug designs.