Patents by Inventor David Earl Spieth

David Earl Spieth 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).

  • Integrated two-level bearing
    Patent number: 8292508
    Abstract: A bearing arrangement includes a bearing outer element that defines a first plurality of races opening radially inwardly, a bearing inner element that defines a second plurality of races opening radially outwardly, and a bearing middle element defining a third plurality of races at its radially outer surface thereof and a fourth plurality of races at its radially inner surface thereof. Rolling elements are receivable in the races. The bearing middle element includes an axial protrusion at least at one end thereof that can be received in a housing with respect to which the bearing outer and inner elements are rotatable.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: October 23, 2012
    Assignee: NSK Corporation
    Inventors: David Earl Spieth, Kevin Lueschen, Michael Gregory Mshar, Mark A. Thorpe
  • Integrated Two-Level Bearing
    Publication number: 20100178002
    Abstract: A bearing arrangement includes a bearing outer element that defines a first plurality of races opening radially inwardly, a bearing inner element that defines a second plurality of races opening radially outwardly, and a bearing middle element defining a third plurality of races at its radially outer surface thereof and a fourth plurality of races at its radially inner surface thereof. Rolling elements are receivable in the races. The bearing middle element includes an axial protrusion at least at one end thereof that can be received in a housing with respect to which the bearing outer and inner elements are rotatable.
    Type: Application
    Filed: January 15, 2009
    Publication date: July 15, 2010
    Applicant: NSK Corporation
    Inventors: David Earl SPIETH, Kevin Lueschen, Michael Gregory Mshar, Mark A. Thorpe