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:
Jul. 06, 2004
Filed:
Oct. 24, 2002
Keiji Yoeda, Numazu, JP;
Isao Matsumoto, Susono, JP;
Kazuhiko Shiratani, Susono, JP;
Shoji Katsumata, Gotemba, JP;
Tametoshi Mizuta, Susono, JP;
Makoto Ogiso, Mishima, JP;
Hideyuki Nishida, Shuntou-gun, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
When a displacement of an armature of an electromagnetically driven valve fails to reach a predetermined threshold value even after an elapse of a predetermined time from switching opening/closing of the valve, it is determined that step-out has occurred or step-out is about to occur and then the valve opening/closing control is changed. The valve opening/closing control is changed, for example, by interrupting application of current to the valve for attracting the armature released from the other valve.