Patents by Inventor Brian J. Quirk

Brian J. Quirk has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Magnetic security system responsive to predetermined persons
    Patent number: 5369394
    Abstract: A security system operates in response to an attempted egress through a door by a preselected person. The magnetic field of a permanent magnet is passed in a preselected spatial relation which respected a current generating device to generate a current upon the attempted egress through the door by the preselected person carrying the permanent magnet, and a security device is energized to lock the door upon the establishment of the generated current. A method of operating a security system is also disclosed.
    Type: Grant
    Filed: June 21, 1993
    Date of Patent: November 29, 1994
    Assignee: Wanderer Saf-T-Lok
    Inventors: Brian J. Quirk, Robert R. Bennett