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DEVICE SIMULTANEOUSLY CONTROLLING THE LOCKING AND RELEASE OF A PLURALITY OF DOORS

  • US 3,751,950 A
  • Filed: 11/08/1971
  • Issued: 08/14/1973
  • Est. Priority Date: 11/30/1970
  • Status: Expired due to Term
First Claim
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1. A device for simultaneously controlling a plurality of doors of a vehicle for the purpose of sElectively locking and releasing the doors, comprising for each door an electrical latch which comprises a withdrawable bolt, an electromagnet having a moving part connected to the bolt for withdrawing the bolt when the electromagnet is energized ;

  • a source of voltage having terminals ;

    a common switch connected in series with each electromagnet for connecting each electromagnet to said terminals ;

    a first coil for actuating the common switch ;

    at least one switch for locking the doors connected in series with the first coil for connecting the first coil to said terminals ;

    a second coil for actuating the common switch ;

    at least one switch for releasing the doors connected in series with the second coil for connecting the second coil to said terminals, said device further comprising a moving part of a latch on one of the doors associated with the switch for locking the doors, said moving part of the latch being movable from outside the door by means of a key which causes, when the key is rotated in a first direction, the mechanical releasing of the door by the moving part of the latch and, when the key is rotated in the opposite direction, the closing of the switch for locking the doors by the moving part of the latch.

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