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:
Apr. 13, 2010
Filed:
Oct. 05, 2005
Applicants:
Dieter Karst, Stein am Rhein, CH;
Kurt Vollenweider, Humlikon, CH;
Paul Furter, Russikon, CH;
Inventors:
Assignee:
Kistler Holding, AG, Winterthur, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01T 13/48 (2006.01);
U.S. Cl.
CPC ...
Abstract
A spark plug has an optical window for sensing combustion processes in an Otto engine. The optical window is located in the central electrode of the spark plug and has at least one lens exposed to the combustion chamber, as well as at least one flexible optical fiber which can conduct light through the spark plug from the lens to an analysis system.