Patents by Inventor Oswald Witschi

Oswald Witschi 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: 10016826
    Abstract: The invention concerns a method for the chip-removing generation or machining of gear teeth on a workpiece which is driven in rotary movement about its rotary axis at very high rates of rotation, with a toothed tool that is driven in rotary movement about its rotary axis, wherein the tool and the workpiece are brought into a rolling tooth engagement in the manner of a helical gear transmission with their axes of rotation crossing each other at an angle different from zero, and wherein a further operation is performed on the workpiece and/or on its gear teeth during the time of operating engagement between the teeth of the tool and of the workpiece.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: July 10, 2018
    Assignee: GLEASON-PFAUTER MASCHINENFABRIK GMBH
    Inventors: Johannes Brogni, Domenico Petrallia, Oswald Witschi
  • Patent number: 9700981
    Abstract: The invention concerns a method for the chip-removing generation or machining of internal gear teeth on a workpiece which is rotatable about its rotary axis and radially delimits a free space that extends axially to one side beyond the internally toothed region and whose radial width narrows in the direction of its axial extension in at least one location. An externally toothed tool which is driven in rotary movement about its axis of rotation is brought from the opposite side into rolling engagement with the internally toothed region with the rotary axes crossed at an angle. Through the application of a mechanical force, the chips which are produced in the process and which are subject to a centrifugal force are caused to change their movement in the zone of narrowing width in a manner directed against the origin of the centrifugal force.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: July 11, 2017
    Assignee: GLEASON-PFAUTER MASCHINENFABRIK GMBH
    Inventors: Johannes Brogni, Domenico Petrallia, Oswald Witschi
  • Publication number: 20150375352
    Abstract: The invention concerns a method for the chip-removing generation or machining of internal gear teeth on a workpiece which is rotatable about its rotary axis and radially delimits a free space that extends axially to one side beyond the internally toothed region and whose radial width narrows in the direction of its axial extension in at least one location. An externally toothed tool which is driven in rotary movement about its axis of rotation is brought from the opposite side into rolling engagement with the internally toothed region with the rotary axes crossed at an angle. Through the application of a mechanical force, the chips which are produced in the process and which are subject to a centrifugal force are caused to change their movement in the zone of narrowing width in a manner directed against the origin of the centrifugal force.
    Type: Application
    Filed: January 27, 2014
    Publication date: December 31, 2015
    Inventors: Johannes Brogni, Domenico Petrallia, Oswald Witschi
  • Publication number: 20150375320
    Abstract: The invention concerns a method for the chip-removing generation or machining of gear teeth on a workpiece which is driven in rotary movement about its rotary axis at very high rates of rotation, with a toothed tool that is driven in rotary movement about its rotary axis, wherein the tool and the workpiece are brought into a rolling tooth engagement in the manner of a helical gear transmission with their axes of rotation crossing each other at an angle different from zero, and wherein a further operation is performed on the workpiece and/or on its gear teeth during the time of operating engagement between the teeth of the tool and of the workpiece
    Type: Application
    Filed: January 30, 2014
    Publication date: December 31, 2015
    Inventors: Johannes Brogni, Domenico Petrallia, Oswald Witschi