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:
Apr. 29, 1997
Filed:
Dec. 13, 1994
Howard E Van Siclen, Jr, San Diego, CA (US);
Precision Engine Controls Corporation, San Diego, CA (US);
Abstract
A high-voltage lead intended for use in ignition systems of engines, typically large engines, the lead having an inner insulated conductor surrounded either by an inner conductive sleeve and an outer insulating sleeve, or by a single insulating sleeve with a conductive layer on its inner surface. The conductive sleeve or conductive layer, which is preferably non-metallic, provides shielding but permits the use of conventional pickup devices to detect electrical pulses in the lead and thereby monitor engine performance with the use of a timing light, oscilloscope or similar device. The presence of two insulating layers provides a desired measure of safety in the presence of an explosive gas and air mixture. The conductive layer provides both shielding and static electricity discharge. The structure of the invention is less expensive than ignition leads with conventional braided stainless steel shielding, and requires less effort and cost to maintain in safe condition.