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:
Sep. 13, 1988
Filed:
Oct. 29, 1987
Kazuhisa Mogi, Susono, JP;
Eishi Ohno, Mishima, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Abstract
An ignition device for an internal combustion engine comprising an ignition coil adapted to produce a secondary reversible voltage, two wires commonly branched from the one end of the ignition coil, and two spark plugs connected to the wires. In each of the two wires, there are provided a series gap forming device and a diode. The diodes are arranged in reverse directions relative to each other, so that the secondary high voltage generated in one direction can pass through one of the diodes and the secondary high voltage in the reverse direction can pass through the other diode, whereby a spark is realized at one end of the two spark plugs by a selective application of the primary current.