Patents by Inventor ANDREAS KUMPFMULLER

ANDREAS KUMPFMULLER 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).

  • Slide rings having a ledeburitic microstructure at the surface
    Patent number: 10344348
    Abstract: A slide ring includes a main body composed of grey cast iron, wherein at least a partial region of a functional surface has a ledeburitic microstructure at the surface. A method for producing such a slide ring includes heating a functional surface of the slide ring by irradiating with high-energy radiation, wherein the irradiation is carried out so that at least a partial region of the irradiated surface is remelted, wherein the parameters of the irradiation are selected so that at least a partial region of the functional surface has a ledeburitic microstructure after cooling.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: July 9, 2019
    Assignee: Federal-Mogul Friedberg GmbH
    Inventors: Christoph Bradl, Marc-Manuel Matz, Andreas Dengler, Andreas Kumpfmuller
  • SLIDE RINGS HAVING A LEDEBURITIC MICROSTRUCTURE AT THE SURFACE
    Publication number: 20160244856
    Abstract: A slide ring includes a main body composed of grey cast iron, wherein at least a partial region of a functional surface has a ledeburitic microstructure at the surface. A method for producing such a slide ring includes heating a functional surface of the slide ring by irradiating with high-energy radiation, wherein the irradiation is carried out so that at least a partial region of the irradiated surface is remelted, wherein the parameters of the irradiation are selected so that at least a partial region of the functional surface has a ledeburitic microstructure after cooling.
    Type: Application
    Filed: July 3, 2014
    Publication date: August 25, 2016
    Inventors: CHRISTOPH BRADL, MARC-MANUEL MATZ, ANDREAS DENGLER, ANDREAS KUMPFMULLER