Patents by Inventor Stephan Fiedler

Stephan Fiedler 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).

  • Method for machining the rotor of a turbine and device useful for carrying out the method
    Patent number: 8959766
    Abstract: In a method for machining grooves, especially fir-tree grooves (13), which are provided for accommodating blades (19), on a rotor (10) of a turbine, especially a low-pressure steam turbine, great simplification and high flexibility is achieved by the fact that in the grooves, or fir-tree grooves (13), material is removed by a program-controlled milling device, wherein the milling device is inserted into the groove, or fir-tree groove (13), with a milling tool (20) which is guided along the places in the groove, or fir-tree groove (13), which are to be machined, by a milling tool positioning device, which is freely movable in space.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: February 24, 2015
    Assignee: Alstom Technology Ltd
    Inventors: Wilfried Storch, Stephan Fiedler, Björn Heucke, Michael Schwaar, Thomas Jaehnert, Günter Gnirss
  • METHOD FOR MACHINING THE ROTOR OF A TURBINE AND DEVICE USEFUL FOR CARRYING OUT THE METHOD
    Publication number: 20110014002
    Abstract: In a method for machining grooves, especially fir-tree grooves (13), which are provided for accommodating blades (19), on a rotor (10) of a turbine, especially a low-pressure steam turbine, great simplification and high flexibility is achieved by the fact that in the grooves, or fir-tree grooves (13), material is removed by a program-controlled milling device, wherein the milling device is inserted into the groove, or fir-tree groove (13), with a milling tool (20) which is guided along the places in the groove, or fir-tree groove (13), which are to be machined, by a milling tool positioning device, which is freely movable in space.
    Type: Application
    Filed: March 10, 2010
    Publication date: January 20, 2011
    Inventors: Wilfried Storch, Stephan Fiedler, Björn Heucke, Michael Schwaar, Thomas Jaehnert, Günter Gnirss