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:
Jun. 02, 2015
Filed:
Mar. 11, 2014
Applicant:
Federal-mogul Ignition Company, Southfield, MI (US);
Inventor:
Frederick J. Quitmeyer, Rochester Hills, MI (US);
Assignee:
Federal-Mogul Ignition Company, Southfield, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01T 13/20 (2006.01); H01T 13/32 (2006.01); H01T 21/02 (2006.01);
U.S. Cl.
CPC ...
H01T 13/32 (2013.01); H01T 21/02 (2013.01);
Abstract
A spark plug has a metal shell, an insulator, a center electrode, and a ground electrode. One or more firing tips can be attached to the center electrode, to the ground electrode, or to both electrodes. The metal shell and ground electrode are attached together by way of one or more laser keyhole welds at an interface of the shell and electrode. Before the laser keyhole welds, resistance welding can be executed for a temporary attachment.