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:
Jul. 06, 1976
Filed:
Jun. 13, 1974
Tetsuya Kondo, Numazu, JA;
Kokusan Denki Co., Ltd., , JA;
Abstract
In an ignition system for an internal combustion engine comprising a power source, an ignition coil including a primary coil portion and a secondary coil portion with said primary coil portion supplied with a primary current from said power source and switching means to break said primary current in time with revolution of the engine whereby a high voltage is induced across said secondary coil portion of said ignition coil, a device for preventing the engine from revolving at more than the predetermined speed including a semiconductor controlled switching element connected in parallel to said primary coil portion of said ignition coil; and a control circuit to control said semiconductor controlled switching element so that it is non-conductive upon said engine revolving at less than the predetermined r.p.m. for normal operation of the ignition system and so that said semiconductor controlled switching element is conductive upon the engine revolving at more than said predetermined r.p.m. whereby it shorts a primary voltage across said primary coil portion of said ignition coil established upon opening of said switching means.