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:
Aug. 21, 1979
Filed:
Jan. 09, 1978
William C Olander, Birmingham, MI (US);
William G Trabold, Royal Oak, MI (US);
Douglas J Harvey, Sterling Heights, MI (US);
Robert W Vest, West Lafayette, IN (US);
General Motors Corporation, Detroit, MI (US);
Abstract
An ignition distributor for an internal combustion engine is provided with a novel rotor electrode which substantially reduces radio frequency interference generated by spark discharges across the rotor gap. At least the tip segment of the rotor electrode is formed of a composite material consisting of a dielectric phase interspersed with a conductive metal phase. In operation, the dielectric phase protrudes from the surface of the electrode promoting ionization in the rotor gap so that electrical discharge occurs at voltages where radio frequency signal production is substantially suppressed.