Patents by Inventor Hartmut Ludke

Hartmut Ludke 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).

  • Process of deburring moldings made from granular material
    Patent number: 4560586
    Abstract: A process for the deburring of bonded moldings of granular material, for example, casting sand cores, by coating them in the same operation with a surface layer. The moldings are circulated within an annular vibrator together with an abrasive body medium which contains a powdered coating agent, the medium being preferably deflocculated by an approximately 50% proportion of hard-foam bodies.
    Type: Grant
    Filed: January 14, 1983
    Date of Patent: December 24, 1985
    Assignees: Carl Kurt Walther GmbH & Co. KG, Theodor Heimeier Metallwerk GmbH
    Inventors: Hans Tolle, Karl Frech, Hartmut Ludke