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:
Mar. 05, 2013
Filed:
Apr. 14, 2010
Futoshi Aida, Chiyoda-ku, JP;
Yusuke Naruse, Chiyoda-ku, JP;
Hiroshi Okuda, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A plasma ignition device comprising: an ignition plug; an ignition circuit applying a high voltage to the plug to start discharge; a power supply circuit including a battery section for supplying an electric energy to a discharge space of the plug having impedance reduced by discharge start, and a charging section charging the battery section with a boosted voltage by a booster circuit, wherein the power supply circuit including: a first meansfor stopping a boosting operation of the booster circuit when the charging section voltage is equal or higher than a first reference for high-voltage abnormality; a second meansfor detecting the charging section abnormal voltage by comparison with a second reference for low-voltage abnormality for detecting ground to conduct a given control on the power supply circuit; a third meansfor invalidating the control of the second means until the charging section is sufficiently charged.