Patents by Inventor Erwin Schoenfeld

Erwin Schoenfeld 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 OF MANUFACTURING METALLIC WELDING WIRES AND METALLIC WELDING WIRES FORMED THEREBY
    Publication number: 20200094355
    Abstract: The subject matter disclosed herein relates to methods of manufacturing metallic welding wires and the metallic welding wires formed thereby. A method of manufacturing a metallic welding wire includes filling a mold with a metallic powder, the metallic powder filling one or more narrow elongated tubes within the mold, and heat treating the tubes filled with the metallic powder, thereby forming a solid metallic welding wire within each tube.
    Type: Application
    Filed: September 26, 2018
    Publication date: March 26, 2020
    Inventors: Norbert Lucke, Walter Brehm, Erwin Schoenfeld
  • Process for producing leaves for leaf seal
    Patent number: 7487588
    Abstract: In a process for producing leaves (20, 20?) for a leaf seal, in particular as a seal for a gas turbine, which leaves (20, 20?) are laterally delimited by a peripheral edge contour and have regions of different thicknesses (d1, d2), a simplification, without sacrificing precision, is achieved by virtue of the edge contour of the leaves (20, 20?) being cut out of a metal sheet (28) by an etching process and the regions of different thicknesses (d1, d2) also being produced simultaneously as part of the etching process.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: February 10, 2009
    Assignee: ALSTOM Technology Ltd.
    Inventors: Simon Ian Hogg, Nigel Anthony Rhodes, Erwin Schoenfeld
  • PROCESS FOR PRODUCING LEAVES FOR LEAF SEAL
    Publication number: 20070261225
    Abstract: In a process for producing leaves (20, 20?) for a leaf seal, in particular as a seal for a gas turbine, which leaves (20, 20?) are laterally delimited by a peripheral edge contour and have regions of different thicknesses (d1, d2), a simplification, without sacrificing precision, is achieved by virtue of the edge contour of the leaves (20, 20?) being cut out of a metal sheet (28) by an etching process and the regions of different thicknesses (d1, d2) also being produced simultaneously as part of the etching process.
    Type: Application
    Filed: October 3, 2006
    Publication date: November 15, 2007
    Inventors: Simon Hogg, Nigel Rhodes, Erwin Schoenfeld