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. 09, 2014
Filed:
Dec. 07, 2010
Yasuhiro Takahashi, Chiyoda-ku, JP;
Takaaki Tanaka, Chiyoda-ku, JP;
Toru Kubo, Minato-ku, JP;
Toshiaki Hata, Chiyoda-ku, JP;
Hideki Umemoto, Chiyoda-ku, JP;
Yasuhiro Takahashi, Chiyoda-ku, JP;
Takaaki Tanaka, Chiyoda-ku, JP;
Toru Kubo, Minato-ku, JP;
Toshiaki Hata, Chiyoda-ku, JP;
Hideki Umemoto, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A starter driving semiconductor switch apparatus energizes and de-energizes a starter according to a command from an outside. A series circuit to which semiconductor switches are connected in series is provided between a battery serving as a power supply and the starter. The starter is energized by bringing all the semiconductor switches into conduction. A voltage or a current at a predetermined point in the series circuit is monitored to make a self-diagnosis on whether the starter is allowed to start and whether there is a failure in the semiconductor switches according to a monitor output. The starter driving semiconductor switch apparatus is thus expected to have a longer useful life by energizing the starter not by using mechanical contacts but by using semiconductor switches.