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. 27, 2000
Filed:
Aug. 05, 1999
James E Johnson, Hot Springs, AR (US);
Charles R Rasnic, Hot Springs, AR (US);
Halo, Inc., Hot Springs, AR (US);
Abstract
A spark plug for an internal combustion engine is provided with a double ringed ground electrode permanently affixed to the spark plug base. One ring is used for the attachment and the other, held apart by one or more legs, is suspended circumferentially and perpendicular to the longitudinal axis of the spark plug a set distance from the center electrode. The method of manufacturing a spark plug comprises the steps of providing a spark plug base, providing a ring shaped ground electrode with enhancements to accomplish shielding and centering of the piece, providing a welding apparatus for rotable welding of said ring shaped ground electrode to said spark plug base, providing an alignment tool for aligning said ring shaped ground electrode with said spark plug base, aligning the ring shaped ground electrode with said spark plug base and welding the ring shaped ground electrode to said spark plug base to form a spark plug.