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. 03, 1976
Filed:
Oct. 21, 1974
Curtis D Munden, Anderson, IN (US);
Robert E Campbell, Anderson, IN (US);
General Motors Corporation, Detroit, MI (US);
Abstract
The energizing circuit of one of the primary windings of an ignition coil having at least two primary windings and a secondary winding is interrupted in timed relationship with the engine whereby a high ignition arc-creating potential is induced in the secondary winding upon each interruption of the primary winding energizing circuit. Upon each interruption of the primary winding energizing circuit, a monostable multivibrator circuit is triggered to the alternate state in which a potential signal is present upon the output circuit thereof and an electrical switching device is triggered conductive to complete a discharge circuit for an ignition capacitor through the other ignition coil primary winding. A charge potential generating circuit under the control of the potential output signal of the monostable multivibrator circuit operates to produce a direct current charge potential in response to the termination of the potential signal and to impress the direct current charge potential across the ignition capacitor.