Patents by Inventor Karl-Rudolf Hegeman

Karl-Rudolf Hegeman 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).

  • Flow-control nozzle for flue-gas scrubber
    Patent number: 4123238
    Abstract: A nozzle in a descending discharge duct for hot flue gases has a tubular body of hourglass shape partly obstructed by a vertically movable frustoconical insert which defines a narrow, downwardly diverging annular channel with the lower part of the body lying below its waist. The upwardly converging top of the insert, projecting partly above the waist, is coated or clad with a refractory layer and is removable for replacement of that layer.
    Type: Grant
    Filed: August 16, 1976
    Date of Patent: October 31, 1978
    Assignee: Gottfried Bischoff Bau Kompl. Gastreinigungs- und Wasserruckkuhlanlagen Kommanditgesellschaft
    Inventor: Karl-Rudolf Hegeman