Patents Assigned to Didier Ofu Engineering GmbH
  • Patent number: 5548882
    Abstract: The invention is directed to an oven installation as intermediate storage between the non-mandrel type coiling device for the strip-shaped slab located downstream of a thin-slab casting installation and its uncoiling device corresponding to the rolling mill downstream.
    Type: Grant
    Filed: May 18, 1994
    Date of Patent: August 27, 1996
    Assignee: Didier OFU Engineering GmbH
    Inventors: Ernst Windhaus, Bernard Seiler, Peter Meyer, Peter Erwig, Horst W. Mathejka, Heinrich Patalon, Peter Holz, deceased
  • Patent number: 5259932
    Abstract: According to the invention the heating system for regenerative coke oven batteries that can be heated with rich gas and/or lean gas or mixed gas is provided comprising vertical flues cooperating in pairs, each vertical flue being connected to a regenerator for preheating the air and, in the case of lean gas operation, for preheating the lean gas or mixed gas. High and low combustion stages, as well as structure defining an internal flue gas return at levels above a flue base are provided. Discharge openings are provided at at least three levels for supplying each flue. A base discharge opening is provided at the flue base directly connected to regenerators. Hollow communicating channels are defined for connecting the regenerators to discharge openings located above the flue base. The hollow communicating channels are preferably formed in each communicating wall connected to a discharge opening leading only to one adjacent flue.
    Type: Grant
    Filed: November 22, 1991
    Date of Patent: November 9, 1993
    Assignees: Didier Ofu Engineering GmbH, Krupp Koppers GmbH, Still Otto GmbH
    Inventors: Manfred Blase, Ulrich Kochanski, Dietrich Wagener, Gunther Meyer, Heinz Durselen, Dieter Stalherm, Joachim Hoitz, Ludwig Offermann, Jurgen Tietze