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. 21, 2001
Filed:
Jun. 07, 2000
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A solenoid valve actuating apparatus wherein an actuating circuit for controlling exciting currents to electromagnets for actuating a plurality of engine valves so that the engine valves will be opened and closed can be formed by a small number of switching means is provided. Two of the engine valves form one engine valve group, and the actuating circuit is provided for each of the engine valve groups. The actuating circuit includes three series circuits each having three switching means connected in series between a first line terminal on a high voltage side and a second line terminal on a low voltage side. Four of the electromagnets each corresponding to each of the engine valve groups connect connecting-in-series portions between the switching means between different series circuits.