Patents by Inventor Markus Leonhard

Markus Leonhard 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 for producing a rolling bearing cage, in particular for large rolling bearings, and apparatus for carrying out the process
    Patent number: 10590992
    Abstract: The invention relates to a process for producing a rolling bearing cage, in particular for large rolling bearings, wherein a steel strip with openings for in each case one rolling body is provided and bent to form a ring, wherein, for thermal coating with a thermoplastic powder, the ring is then heated to a temperature above a minimum coating temperature, wherein the ring is then dipped into a fluidized bed comprising the thermoplastic powder, wherein, during the residence time of the ring in the fluidized bed, plastic powder adheres to the ring, melts and forms a continuous coating, and wherein the ring is removed from the fluidized bed after the coating. The invention also relates to an apparatus for carrying out the process.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: March 17, 2020
    Assignee: THYSSENKRUPP ROTHE ERDE GMBH
    Inventors: Joerg Rollmann, Stefan Schnieder, Markus Leonhard, Reinhard Juergens
  • PROCESS FOR PRODUCING A ROLLING BEARING CAGE, IN PARTICULAR FOR LARGE ROLLING BEARINGS, AND APPARATUS FOR CARRYING OUT THE PROCESS
    Publication number: 20150024144
    Abstract: The invention relates to a process for producing a rolling bearing cage, in particular for large rolling bearings, wherein a steel strip with openings for in each case one rolling body is provided and bent to form a ring, wherein, for thermal coating with a thermoplastic powder, the ring is then heated to a temperature above a minimum coating temperature, wherein the ring is then dipped into a fluidized bed comprising the thermoplastic powder, wherein, during the residence time of the ring in the fluidized bed, plastic powder adheres to the ring, melts and forms a continuous coating, and wherein the ring is removed from the fluidized bed after the coating. The invention also relates to an apparatus for carrying out the process.
    Type: Application
    Filed: February 27, 2013
    Publication date: January 22, 2015
    Inventors: Joerg Rollmann, Stefan Schnieder, Markus Leonhard, Reinhard Juergens