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

Claim 0:
1. A spark plug comprising:
a terminal end;
a firing end;
an axial centerline extending between the terminal end and the firing end;
an insulative core extending between the terminal end and the firing end, the insulative core including:
a central bore coincident with the axial centerline extending through the insulative core; and
an insulative nose extending along 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 core, wherein a cross-sectional area of the insulative nose perpendicular to the axial centerline varies along the axial length of the insulative nose with a cross-sectional area of the insulative nose along at least a portion of the axial length of the insulative nose being less than a surface area of the end surface so that at least a portion of a perimeter surface along the axial length of the insulate nose has a concave profile.