Patents by Inventor Niklas Axen

Niklas Axen 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).

  • Seal rings with improved friction and wear properties
    Patent number: 6609953
    Abstract: The present invention relates to a cemented carbide wear part with a wear surface with improved friction and wear properties. This has been obtained by providing the wear surface with a surface layer with a thickness of 0.5 &mgr;m to 25 &mgr;m, preferably 1 to 10 &mgr;m with an average WC grain size of less than 500 nm. The surface layer is obtained by lapping the wear surface with an abrasive disc for at least 10 minutes at 1000 to 3000 rpm at a pressure of 0.1 to 0.5 MPa preferably without any grinding media.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: August 26, 2003
    Assignee: Sandvik AB
    Inventors: Stefan Ederyd, Håkan Engqvist, Niklas Axén
  • Seal rings with improved friction and wear properties
    Publication number: 20030109199
    Abstract: The present invention relates to a cemented carbide wear part with a wear surface with improved friction and wear properties. This has been obtained by providing the wear surface with a surface layer with a thickness of 0.5 &mgr;m to 25 &mgr;m, preferably 1 to 10 &mgr;m with an average WC grain size of less than 500 nm. The surface layer is obtained by lapping the wear surface with an abrasive disc for at least 10 minutes at 1000 to 3000 rpm at a pressure of 0.1 to 0.5 MPa preferably without any grinding media.
    Type: Application
    Filed: December 19, 2002
    Publication date: June 12, 2003
    Inventors: Stefan Ederyd, Hakan Engqvist, Niklas Axen
  • Seal rings with improved friction and wear properties
    Patent number: 6541135
    Abstract: The present invention relates to a cemented carbide wear part with a wear surface with improved friction and wear properties. This has been obtained by providing the wear surface with a surface layer with a thickness of 0.5 &mgr;m to 25 &mgr;m, preferably 1 to 10 &mgr;m with an average WC grain size of less than 500 nm. The surface layer is obtained by lapping the wear surface with an abrasive disc for at least 10 minutes at 1000 to 3000 rpm at a pressure of 0.1 to 0.5 MPa preferably without any grinding media.
    Type: Grant
    Filed: October 4, 2000
    Date of Patent: April 1, 2003
    Assignee: Sandvik AB
    Inventors: Stefan Ederyd, Håkan Engqvist, Niklas Axén