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:
Mar. 28, 2017
Filed:
Mar. 22, 2013
International Truck Intellectual Property Company, Llc, Lisle, IL (US);
Mark Paul Lill, Elgin, IL (US);
International Truck Intellectual Property Company, LLC, Lisle, IL (US);
Abstract
A lock mechanism for a motor vehicle ignition switch includes a housing defining a barrel and a locking cylinder fitted for rotation in the barrel. A cap is fitted over one end of the housing capturing a frangible lock insert between the housing and cap. The frangible lock insert includes an electrically conductive pathway between radially displaced connection points on the rim of the insert. A circuit includes the electrically conductive pathway which is interrupted by disintegration of the frangible lock insert. Such disintegration occurs upon efforts to tamper with the lock mechanism or application of brute force to the sensor.