Patent ID: 6125773
Filing Date: 2000-10-03
Classification: F23M

Abstract:
A cable system for raising a furnace door panel to at least partially open, and for lowering the furnace door panel to at least partially close a furnace opening that is formed through an upstanding furnace face of an industrial furnace, comprising:a) cable means for connection to the furnace door panel and for defining at least one reach of flexible cable that extends upwardly from the door panel and that can be raised, lowered and held in selected positions relative to the furnace opening;b) operating means connected to the cable means for raising the at least one reach of flexible cable to raise the door panel relative to the furnace opening to an open position wherein the door panel at least partially opens the furnace opening, and for lowering the at least one reach of flexible cable to lower the door panel relative to the furnace opening to move the door panel toward a closed position wherein the door panel at least partially closes the furnace opening; and,c) wherein the operating means includes horizontal positioning means for engaging the at least one reach of flexible cable at a location above the furnace opening for effecting forward horizontal movement of the at least one reach of flexible cable in a forward direction away from the furnace face during raising of the door panel, and for effecting rearward horizontal movement of the at least one reach of flexible cable in a rearward direction toward the furnace face during lowering of the door panel.