Noble metal tip for spark plug electrode and method of...

Details Noble metal tip for spark plug electrode and method of... Noble metal tip for spark plug electrode and method of...

2008-01-29

2008-01-29

Santiago, Mariceli (Department: 2879)

Electric lamp and discharge devices

Spark plugs

Particular electrode structure or spacing

C313S143000, C313S144000, C123S1690EL

Reexamination Certificate

active

10787280

ABSTRACT:
A noble metal tip20for attachment to a spark plug center electrode36and/or a ground electrode. Noble metal tip20is a generally cylindrical component that includes a firing end40, an attachment end42, and one or more retention features44, 46and60, 62. 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.

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