Patents Examined by Chistopher Koehler
  • Method of installing sealed circular ductwork
    Patent number: 8505185
    Abstract: A circular sheet metal duct having a sealant applied across the longitudinal seam. The sealant will improve the efficiency and will reduce or eliminate air leakage from the longitudinal seam. The sealant is applied during the manufacturing processes so that an installer does not have to seal the duct work. The method of manufacturing the sealant is provided.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: August 13, 2013
    Assignee: Ductmate Industries, Inc.
    Inventors: Douglas G. Gudenburr, Vincent L. Bloom
  • Method of installing sealed circular ductwork
    Patent number: 8464415
    Abstract: A circular sheet metal duct having a sealant applied across the longitudinal seam. The sealant will improve the efficiency and will reduce or eliminate air leakage from the longitudinal seam. The sealant is applied during the manufacturing processes so that an installer does not have to seal the duct work. The method of manufacturing the sealant is provided.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: June 18, 2013
    Assignee: Ductmate Industries, Inc.
    Inventors: Douglas G. Gudenburr, Vincent L. Bloom