Patents Assigned to Goodway Technologies Corporation
  • Duct cleaning method
    Patent number: 5472514
    Abstract: A method and apparatus for cleaning ducts such as used in HVAC systems includes as part of the apparatus a propeller having pitched, flexible blades for rotatably engaging the interior duct surface for dislodging soot and propelling a cloud of soot along the duct to an evacuation point. The method includes establishing a temporary block in the duct, moving the propeller along the duct for dislodging soot and generation a dust cloud, and evacuating the duct by drawing the soot cloud created by the propeller.
    Type: Grant
    Filed: June 10, 1994
    Date of Patent: December 5, 1995
    Assignee: Goodway Technologies Corporation
    Inventor: Arvid K. Grimsley