Patents by Inventor STEFAN SELLMANN

STEFAN SELLMANN 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: 11052467
    Abstract: Provided is a mobile machining system for a turning machining of inner surfaces of hollow-cylindrical components, in particular for machining valve seats. The machining system includes a second drive train and the third drive train in each case which preferably have a gear mechanism, in particular a planetary gear mechanism, which is arranged between the respective motor and the associated gearwheel which projects outward from the rotational part. This leads to a simple, inexpensive and space-saving construction.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: July 6, 2021
    Inventors: Patrick Rynkowski, Stefan Sellmann, Roger Tobisch, Felix Vogt, Marat Visajtaev
  • Patent number: 10518379
    Abstract: Provided is a grinding machine for processing a sweep edge of a rotor blade, including a grinding unit with a driven grinding tool, a workpiece receiving device which is designed for receiving a rotor blade to be ground, and a workpiece drive unit which is configured for moving the workpiece receiving device, with a rotor blade received thereon, relative to the grinding tool for the purpose of machining the sweep edge, wherein the workpiece drive unit has a pivot axis at which the workpiece receiving device is held in such a way that the sweep edge of a rotor blade received thereon is engaged with the grinding tool in the course of a pivot movement of the workpiece receiving device about the pivot axis.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: December 31, 2019
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Julian Philip Heiderich, Karsten Schäffer, Stefan Sellmann, Marat Visajtaev, Felix Vogt
  • Publication number: 20190381613
    Abstract: Provided is a mobile CNC machining machine which is designed to machine a rotor of a turbomachine, wherein the turbomachine is a rotor of a steam turbine, including an x-axis, a y-axis and a z-axis which are arranged perpendicular to one another, a baseplate, a stator which is arranged on the baseplate and is movable relative to the baseplate along the x-axis, and a tool module which is held on the stator and is movable along the y-axis and along the z-axis and is designed to accommodate a machining tool wherein, guided along a circular-arc-shaped convex guide disposed on the stator, the tool module is movable about a c-axis which extends parallel to the x-axis; in that the z-axis intersects the c-axis; and in that the y-axis extends tangentially to a circular path, of which the c-axis is the center point.
    Type: Application
    Filed: March 15, 2017
    Publication date: December 19, 2019
    Inventors: Sebastian Potyka, Stefan Sellmann, Felix Vogt, Jannik Lüpfert
  • Publication number: 20190375025
    Abstract: Provided is a mobile machining system for a turning machining of inner surfaces of hollow-cylindrical components, in particular for machining valve seats. The machining system includes a second drive train and the third drive train in each case which preferably have a gear mechanism, in particular a planetary gear mechanism, which is arranged between the respective motor and the associated gearwheel which projects outward from the rotational part. This leads to a simple, inexpensive and space-saving construction.
    Type: Application
    Filed: January 4, 2018
    Publication date: December 12, 2019
    Inventors: Patrick Rynkowski, Stefan Sellmann, Roger Tobisch, Felix Vogt, Marat Visajtaev
  • Publication number: 20180050435
    Abstract: Provided is a grinding machine for processing a sweep edge of a rotor blade, including a grinding unit with a driven grinding tool, a workpiece receiving device which is designed for receiving a rotor blade to be ground, and a workpiece drive unit which is configured for moving the workpiece receiving device, with a rotor blade received thereon, relative to the grinding tool for the purpose of machining the sweep edge, wherein the workpiece drive unit has a pivot axis at which the workpiece receiving device is held in such a way that the sweep edge of a rotor blade received thereon is engaged with the grinding tool in the course of a pivot movement of the workpiece receiving device about the pivot axis.
    Type: Application
    Filed: March 21, 2016
    Publication date: February 22, 2018
    Applicant: Siemens Aktiengesellschaft
    Inventors: JULIAN PHILIP HEIDERICH, KARSTEN SCHÄFFER, STEFAN SELLMANN, MARAT VISAJTAEV, FELIX VOGT