Patents by Inventor Karl-Josef Schiefer

Karl-Josef Schiefer 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).

  • Patent number: 7677145
    Abstract: This application relates to a cutting insert and method for machining a workpiece. This application further relates to a method for the machining of a workpiece using such an indexable insert. In this case, the term “machining” means, among other things, the first-time machining and/or a re-profiling of a wheel or of a brake disc of a wheel set of a railway vehicle. An object of at least one possible embodiment of the present application is to create a cutting insert that is as economical as possible. An additional object of at least one possible embodiment of the present application is the most effective method possible and a lathe tool that is well-suited for the machining of a workpiece, such as for the copy turning and/or for the first-time machining and/or for the re-profiling of a wheel or of a brake disc of a wheel set of a railway vehicle, using a cutting insert described herein.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: March 16, 2010
    Assignee: Kennametal Inc.
    Inventors: Christian Grund, Karl-Josef Schiefer, Siegmar Nikstat
  • Publication number: 20070292226
    Abstract: A cutting insert and method for machining a workpiece. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.
    Type: Application
    Filed: May 30, 2007
    Publication date: December 20, 2007
    Inventors: CHRISTIAN GRUND, KARL-JOSEF SCHIEFER, SIEGMAR NIKSTAT
  • Patent number: D651223
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: December 27, 2011
    Assignee: Kennametal Inc.
    Inventors: Christian Grund, Karl Josef Schiefer, Siegmar Michael Nikstat