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. 29, 2008
Filed:
Feb. 26, 2004
Paul Tinwell, Northwich, GB;
Gurdev Orjela, Autelbas Barnich, BE;
Paul Tinwell, Northwich, GB;
Gurdev Orjela, Autelbas Barnich, BE;
Federal-Mogul Ignition (U.K.) Limited, Manchester, GB;
Abstract
A noble metal tipfor attachment to a spark plug center electrodeand/or a ground electrode. Noble metal tipis a generally cylindrical component that includes a firing end, an attachment end, and one or more retention featuresand. The retention features are generally conically shaped holes or recesses formed in the side of the noble metal tip, and are designed to receive molten material during a laser attachment process. Once the molten material has solidified in the retention features, a fusion layer is formed and acts as a mechanical bond or interlock between the noble metal tip and the electrode. Methods of manufacturing and attaching the noble metal tips are also provided.