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:
Oct. 14, 2014
Filed:
Oct. 29, 2008
Benjamin L'henoret, Paris, FR;
Jan Haag, Nittenau, DE;
John A. Burrows, Cheshire, GB;
Robin Clarke, Cheshire, GB;
Paul Tinwell, Fayence, FR;
Benjamin L'Henoret, Paris, FR;
Jan Haag, Nittenau, DE;
John A. Burrows, Cheshire, GB;
Robin Clarke, Cheshire, GB;
Paul Tinwell, Fayence, FR;
Federal-Mogul Ignition Company, Southfield, MI (US);
Abstract
A spark plug having an integral gasoline combustion sensor is disclosed. The spark plug includes a center electrode assembly with a terminal stud at one end and a center electrode with a sparking surface at an opposite end; a generally tubular insulator surrounding the center electrode assembly; a shell surrounding the insulator and having along its length a turn-over on a first end, a barrel having an outer surface and barrel shoulder on a gasket flange thereof, a threaded portion, and a ground electrode; and a piezo sensor assembly located on the barrel shoulder proximate the outer surface of the barrel which includes a lower electrode contact, a piezo transducer, an upper electrode contact, an isolator having a convex upper surface, and an upper bushing which is attached to the barrel.