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SECURITY LICENSE PLATE FOR VEHICLES

  • US 3,805,231 A
  • Filed: 08/26/1971
  • Issued: 04/16/1974
  • Est. Priority Date: 08/26/1971
  • Status: Expired due to Term
First Claim
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1. A security license plate for vehicles of the type including an ignition system and having an ignition switch for energizing said ignition system, said license plate comprising, a generally flat, plate-like body having a first predetermined configuration defined by a peripheral edge, said body including a main body section having a second predetermined configuration and arranged for mounting on said vehicle, said main body section including an opening therein, said body including a fragmentary body section having a third configuration conforming to the configuration of said opening in said main body section to enable said fragmentary body section to be inserted into and removed from said opening, said fragmentary body section being mounted on said main body section within said opening to define said first predetermined configuration, said fragmentary body section being selectively detachable from said main body section for removal from within said opening to leave only said main body section and recognizably changing said predetermined configuration by visually displaying said second predetermined configuration, switching means mounted on said body for connection in said ignition system to control energization thereof, said switching means including an actuating assembly mounted for removal with said fragmentary body section to disenable energization of said ignition system, said switching means including a switching assembly mounted on said main body section for actuation by said actuating assembly to enable energization of said ignition system when said fragmentary body section is in the mounted position, said actuating assembly includes a magnet member having a magnetic field, said switching assembly being arranged for actuation by a magnetic field, said switching assembly being disposed in the magnetic field of said magnetic member in the mounted position of said fragmentary body section so as to cause actuation of said switching assembly and enabling energization of said ignition system in the installed position of said fragmentary bOdy section and to disenable energization of said ignition system and visually indicate an unauthorized use of said vehicle in the non-installed position of said fragmentary body section.

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