Patents Assigned to The Protectowire Company, Inc.
  • Patent number: 8096708
    Abstract: The present invention provides a digital linear heat detector with thermocouple heat confirmation. A digital linear heat detector with thermocouple heat confirmation comprises a first conductor and a second conductor, the first conductor composed of a different conductive material than the second conductor. The first and second conductors are then are twisted together to form substantially continuous spring pressure between the first conductor and the second conductor, thereby causing the layers of the non-conductive heat sensitive thermoplastic material to be in contact. The present invention also includes a monitoring circuit that is configured to monitor resistance along the first and second conductors. When the resistance changes along the first and second conductors, the monitor is configured to detect a short and enter a thermocouple mode.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: January 17, 2012
    Assignee: The Protectowire Company, Inc.
    Inventor: Brian P. Harrington