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:
Jun. 03, 1997
Filed:
Apr. 19, 1995
Shunichi Hasegawa, Machida, JP;
Yoshiki Onuma, Ebina, JP;
Nissan Motor Co., Ltd., Kanagawa-ken, JP;
Abstract
An antitheft apparatus for an automotive vehicle comprises: a transponder (1) buried in an ignition key to store an ID number thereof; a transmit and receive unit (2) provided in an ignition key cylinder to receive the ID number of the ignition key inserted into the ignition key cylinder; and an immobilizer unit (3) for, in antitheft mode, collating the received ID number with a number of stored ID numbers, and outputting an engine start enable signal when the received ID number matches one of the stored ID numbers and an engine start disable signal when does not match. In particular, the immobilizer unit (3) releases an ID number register mode into the antitheft mode automatically, when the received ID number is read twice successively by the transmit/receive unit or when is the same as one of the already stored ID numbers. On the other hand, after any given number of ID numbers have been registered, the ID number register mode can be also released automatically. Therefore, the ID number register mode can be released automatically after any given number of ID numbers has been registered.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile