Patents by Inventor Holger Kleen

Holger Kleen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Grate bar and grate with cooling apparatus and process for cooling
    Patent number: 5636581
    Abstract: Fluid-cooled grate bars and grates for use in a combustion furnace such as a garbage incineration plant and a process for cooling the grate bars and grates. The grate bar has a duct defined therewithin for guiding a coolant supplied by a fluid-cooling apparatus. The primary coolant is preferably water. Steam formation is prevented by pressurizing the water. Additional or replacement coolant such, for example, as air may be employed for the grate bars and grates.
    Type: Grant
    Filed: January 10, 1995
    Date of Patent: June 10, 1997
    Assignee: NOELL Abfall-Und Energietechnik GmbH
    Inventors: Holger Kleen, Hans-Gunther Mayer, Wolfram Schnabel