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Automated door locking system for aircraft lavatory

  • US 4,994,722 A
  • Filed: 10/02/1989
  • Issued: 02/19/1991
  • Est. Priority Date: 10/02/1989
  • Status: Expired due to Term
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First Claim
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1. A system for locking a door from a remote location comprising:

  • a system switch for activating said system;

    means for sensing the presence of a person in the area behind said door;

    means for locking said door when the presence of said person is not sensed by said sensing means;

    means for overriding said locking means to open said door; and

    wherein said system remains active until said system switch is turned off.

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