Patents Assigned to Fab-Tech Incorporated
  • Fitting for installation of a nipple from the exterior of a duct and method of installation
    Patent number: 6467815
    Abstract: A special fitting for installing a flanged nipple from the exterior of a duct. The threaded nipple has a handling stem formed integrally therewith, which is used to hold the nipple and flange inside the duct while a flexible cup seal washer is deformed and passed through the space between the handling stem and the duct. Thereafter, the fitting is drawn up with a nut and the handling stem cut off to provide a nipple.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: October 22, 2002
    Assignee: Fab-Tech Incorporated
    Inventors: Joseph M Rich, Jeffery A. Goodwin, Douglas L. Allen
  • Damper system with edge sealed damper blade and method of assembly
    Patent number: 5788218
    Abstract: A damper system has a rotatable, damper blade with a peripheral extending generally U-shaped channel edge seal fitted over the damper blade's peripheral edge. The channel edge seal comprises two edge seal members that are held together in tension by two retainers through which extend the damper blade shafts.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: August 4, 1998
    Assignee: Fab-Tech Incorporated
    Inventor: Wayne E. Goldman