Patents by Inventor Johann Hartner

Johann Hartner 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 of producing a flat friction disk
    Patent number: 6105234
    Abstract: There is described a method of producing a flat friction disk, where first of all a sintered friction lining is applied onto a flat steel disk (1) and is then sintered, before the sintered friction lining (2) is compacted and sized by simultaneously pressing grooves (4) into the same. For simplifying the production method it is proposed that upon sizing the friction disk localized recesses (5) should be pressed into the steel disk (1) over its surface through the sintered friction lining (2).
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: August 22, 2000
    Assignee: Miba Frictec GmbH
    Inventors: Christian Kremsmair, Gerhard Hartner, Johann Hartner, Bruno Burtlmair, Klaus-Peter Lassl