Patents Assigned to Kolpack Industries Inc.
  • Door jamb post and valved vent passage with heater
    Patent number: 4662270
    Abstract: A door jamb for a cold storage room is provided with a tranverse passage for passage of air from the exterior into the interior of the cold storage room. A thin metal flap valve, specifically of stainless steel, is placed at the exterior end of the passage, seated on a flat plate. An electric heater in the passage prevents the valve from being immobilized in the closed position due to frozen condensation.
    Type: Grant
    Filed: August 30, 1985
    Date of Patent: May 5, 1987
    Assignee: Kolpack Industries Inc.
    Inventors: R. Charles Fiddler, Nathan L. Coleman