Patents by Inventor Eric Nodwell

Eric Nodwell 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 and device for inspecting laminated iron cores of electrical machines for interlamination shorts
    Patent number: 6815957
    Abstract: The present invention relates to a method, an apparatus and a computer program for inspecting laminated iron cores (1) of electrical machines for interlamination shorts, in which the laminated iron core (1) is magnetized by means of an auxiliary winding, and the iron surface is scanned by means of at least one measurement coil arrangement (2) with a downstream measurement device. In this case, unique and quantifiable localization of interlamination shorts is achieved by using both the phase (8) and the amplitude (7) of the electrical signal which is induced in the at least one measurement coil arrangement (2), in combined form.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: November 9, 2004
    Assignee: Alstom (Switzerland) LTD
    Inventors: Max Hobelsberger, Ingo Kirchhoff, Eric Nodwell, Zlatimir Posedel
  • Method and device for inspecting laminated iron cores of electrical machines for interlamination shorts
    Publication number: 20030057961
    Abstract: The present invention relates to a method, an apparatus and a computer program for inspecting laminated iron cores (1) of electrical machines for interlamination shorts, in which the laminated iron core (1) is magnetized by means of an auxiliary winding, and the iron surface is scanned by means of at least one measurement coil arrangement (2) with a downstream measurement device. In this case, unique and quantifiable localization of interlamination shorts is achieved by using both the phase (8) and the amplitude (7) of the electrical signal which is induced in the at least one measurement coil arrangement (2), in combined form.
    Type: Application
    Filed: May 17, 2002
    Publication date: March 27, 2003
    Inventors: Max Hobelsberger, Ingo Kirchhoff, Eric Nodwell, Zlatimir Posedel