Patents by Inventor Ian M. Walley

Ian M. Walley 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).

  • Satellite unit identification system
    Patent number: 5500639
    Abstract: In a fire, smoke or intruder detection system including a master unit and satellite units with remote sensors, the satellite units send alarm transmissions to the master unit over a radio frequency channel. In order to register satellite units with the master unit each satellite unit is provided with a unique identification code and, after suitable triggering, sends a signal including this code to the master unit over a line-of-sight communications channel. The master unit registers satellite unit identification codes received on the line-of-sight channel and disregards radio frequency transmissions if they include unregistered satellite unit identification codes.
    Type: Grant
    Filed: May 27, 1994
    Date of Patent: March 19, 1996
    Assignee: Scantronic Limited
    Inventors: Ian M. Walley, Timothy R. F. Hankins