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. 15, 2009
Filed:
Sep. 27, 2005
Kazuya Otani, Aichi, JP;
Toru Maeda, Aichi, JP;
Toshihiro Nagae, Aichi, JP;
Tomoo Kakegawa, Aichi-ken, JP;
Kazuya Otani, Aichi, JP;
Toru Maeda, Aichi, JP;
Toshihiro Nagae, Aichi, JP;
Tomoo Kakegawa, Aichi-ken, JP;
Kabushiki Kaisha Tokai Rika Denki Seisakusho, Aichi, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
An electric steering lock capable of outputting a signal correctly indicating an operation state of a steering lock mechanism even when the operation voltage of a lock detector decreases. The electric steering lock includes a CPU, a signal hold circuit, and an OR circuit. When the steering lock mechanism unlocks a steering wheel, an unlock sensor provides an H level detection signal to the CPU and the signal hold circuit. In response to the detection signal, the CPU issues a state hold command to the signal hold circuit. In response to the state hold command, the signal hold circuit generates an H level hold signal in correspondence with the detection signal. The OR circuit provides an H level signal to an immobilizer ECU when at least one of the detection signal from the unlock sensor or the hold signal has an H level.