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:
Oct. 22, 1985
Filed:
Apr. 26, 1984
William A Read, Newark, CA (US);
Other;
Abstract
Apparatus is disclosed for preventing theft or unauthorized use of motor vehicles. An auxiliary electrical switch is mounted on the housing of the ignition or starter key cylinder, and is connected to a fuse in the main electrical circuit. When the key cylinder is removed and the ignition or starter switch is shorted, this auxiliary switch causes the fuse to blow out and disable the electrical system in the vehicle. The ignition or starter switch actuates a relay, which in turn is connected to a valve mechanism in the fuel line and the ignition coil or starter through independent circuits. Actuation of the relay causes electrical power to be delivered to the fuel valve and ignition coil or starter. When the relay is de-actuated, the ignition coil is grounded, and the vehicle cannot be started with a jumper wire. A further switch is disclosed for disabling the relay.