• US 3,623,569 A
  • Filed: 12/29/1969
  • Issued: 11/30/1971
  • Est. Priority Date: 12/29/1969
  • Status: Expired due to Term
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First Claim
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1. Motor vehicle antitheft means for use on a motor vehicle to hinder theft thereof comprising a single electrical switch means constructed to be electrically incorporated in the ignition circuit of said motor vehicle and to be physically located on said motor vehicle in a secret location known only to authorized users of said motor vehicle, said switch means having a single pair of switch contacts, and a moveable switch element having an open position in respect to said switch contacts and a close position bridging said switch contacts, said switch means having yieldable means normally holding said moveable switch element in said open position, said moveable switch element being manually actuable by one of said authorized users in opposition to said yieldable means from said open to said close position, said switch means having electromagnetic means adapted to be in series with said switch contacts so as to be energized when said moveable switch elemEnt is in close position, said moveable switch element having to be held by said authorized user in its close position until energization of said electromagnetic means, said electromagnetic means, when energized, acting in opposition to said yieldable means for holding and maintaining said moveable switch element in said close position to maintain itself energized, said yieldable means operative upon deenergization of said electromagnetic means to actuate said moveable switch element from said close to said open position.

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