Patent ID: 11916357
Assignee: ECOPOWER SPARK, LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. An insulative core for a spark plug, the insulative core including:
an axial centerline extending between a terminal end and a firing end
a central bore coincident with the axial centerline extending through the insulative core; and
an insulative nose extending along and symmetrically about the axial centerline at the firing end of the insulative core, the insulative nose having an axial length and defining an end surface of the insulative nose at the firing end, wherein a perimeter surface of the insulative nose has a concave curvilinear shape over at least a portion of the axial length, the central bore to receive a center electrode wire of a center electrode of the spark plug with the end surface to be in contact with and support a bottom surface of an electrode head of the center electrode.