Patents Assigned to Fiber-Dyne, Inc.
  • Ducting fire protection
    Patent number: 4143670
    Abstract: A length of fiberglass duct with a thermoplastic sleeve positioned within the duct as a liner, with the sleeve fixed to the duct at the downstream end of the sleeve. Flames or high temperature fluids moving through the duct soften the thermoplastic sleeve and cause the sleeve to collapse blocking further movement through the duct.
    Type: Grant
    Filed: December 13, 1976
    Date of Patent: March 13, 1979
    Assignee: Fiber-Dyne, Inc.
    Inventors: Rodney I. Olson, Nicholas J. Szegedi
  • Ducting fire protection
    Patent number: 4143671
    Abstract: A length of fiberglass duct with a thermoplastic sleeve positioned within the duct as a liner, with the sleeve fixed to the duct at the downstream end of the sleeve. Flames or high temperature fluids moving through the duct soften the thermoplastic sleeve and causes the sleeve to collapse blocking further movement through the duct. In an alternative embodiment, the sleeve is used as a splice between two pieces of duct with the heat in the duct causing the softening and collapse of the sleeve.
    Type: Grant
    Filed: November 11, 1976
    Date of Patent: March 13, 1979
    Assignee: Fiber-Dyne, Inc.
    Inventor: Rodney I. Olson