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:
May. 19, 2009
Filed:
Sep. 24, 2007
Yasuharu Horai, Tochigi, JP;
Yasutoshi Aso, Tochigi, JP;
Yasuharu Horai, Tochigi, JP;
Yasutoshi Aso, Tochigi, JP;
Keihin Corporation, Tokyo, JP;
Abstract
In an inductive load driving system, it is configured to comprise a first switching element that is inserted in a position between the external power supply and the inductive load, a second switching element that is inserted in a position between the inductive load and the ground, a return current circuit including a first branch path which diverges at a location between the first switching element and the inductive load to be connected to the ground, that returns counter electromotive current to the ground when the second switching element is turned on, and a counter electromotive current reduction circuit including a second branch path which diverges at a location between the inductive load and the second switching element to be connected to the external power supply, that reduces the counter electromotive current to the external power supply when the first and second switching elements are turned off.