Patents by Inventor Norbert Katthöfer

Norbert Katthöfer 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).

  • Method and device for extracting extraction products in underground mining
    Patent number: 7350874
    Abstract: In the method according to the invention and the arrangement or according to the invention for extracting extraction products in underground mining operations using the caving method, the extraction products (20) collapsing in an upper gate area (10) are extracted via at least one extraction funnel (13) or the like into an extraction path (14) driven below the gate and are transported away therein by means of an extraction conveyor (15). According to the invention the extraction funnels (13) are arranged laterally beside the extraction conveyor (15) and lead at their lower end into a ramp surface (17) inclined towards the extraction conveyor, the extraction products extracted from the gate through the extraction funnels being transported slidingly over the inclined ramp surface to the extraction conveyor.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: April 1, 2008
    Assignees: DBT GmbH, Codelco
    Inventors: Reinhold Brüggemann, Detlef Hahn, Frank Fischer, Jochen Hammel, Jörg Wirtz, Norbert Katthöfer, Frank Herrmann, Hans Tümpner, Harry Martin, Juan Delgado, Victor Raul Encina Montenegro, Pablo Antonio Letelier Parga, Jaime Hernan Carreno Valdés, Fernando Arturo Geister Bühlmann
  • Method and device for extracting extraction products in underground mining
    Publication number: 20060208555
    Abstract: In the method according to the invention and the arrangement or according to the invention for extracting extraction products in underground mining operations using the caving method, the extraction products (20) collapsing in an upper gate area (10) are extracted via at least one extraction funnel (13) or the like into an extraction path (14) driven below the gate and are transported away therein by means of an extraction conveyor (15). According to the invention the extraction funnels (13) are arranged laterally beside the extraction conveyor (15) and lead at their lower end into a ramp surface (17) inclined towards the extraction conveyor, the extraction products extracted from the gate through the extraction funnels being transported slidingly over the inclined ramp surface to the extraction conveyor.
    Type: Application
    Filed: June 18, 2004
    Publication date: September 21, 2006
    Applicants: DBT GmbH, Corporacion Nacional Del Cobre
    Inventors: Reinhold Brüggemann, Detlef Hahn, Frank Fischer, Jocken Hammel, Jörg Wirtz, Norbert Katthöfer