Patents by Inventor Reinhart G Welle

Reinhart G Welle 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).

  • Hollow motor drive device with an offset magnet, shaft, and nut
    Patent number: 7893582
    Abstract: A hollow motor drive device includes a screw shaft provided with a spiral screw groove formed in an outer peripheral surface thereof, a nut member screw-engaged with the screw groove, a hollow drive shaft having an inner peripheral side on which the nut member is fixed and an outer peripheral side on which a permanent magnet is disposed, and a housing provided with a bearing portion rotatably supporting the hollow drive shaft and a coil portion. In the hollow drive shaft, the nut member and the permanent magnet are disposed so as not to be overlapped with each other in a direction perpendicular to the axial direction of the hollow drive shaft, and in the housing, the bearing portion is disposed to a position corresponding to the nut member, and the coil portion is disposed to a position corresponding to the permanent magnet.
    Type: Grant
    Filed: December 26, 2006
    Date of Patent: February 22, 2011
    Assignees: THK Co., Ltd, THK GmbH
    Inventors: Reinhart G Welle, Dirk Loeckmann
  • Hollow Motor Drive Device
    Publication number: 20090001837
    Abstract: A hollow motor drive device includes a screw shaft provided with a spiral screw groove formed in an outer peripheral surface thereof, a nut member screw-engaged with the screw groove, a hollow drive shaft having an inner peripheral side on which the nut member is fixed and an outer peripheral side on which a permanent magnet is disposed, and a housing provided with a bearing portion rotatably supporting the hollow drive shaft and a coil portion. In the hollow drive shaft, the nut member and the permanent magnet are disposed so as not to be overlapped with each other in a direction perpendicular to the axial direction of the hollow drive shaft, and in the housing, the bearing portion is disposed to a position corresponding to the nut member, and the coil portion is disposed to a position corresponding to the permanent magnet.
    Type: Application
    Filed: December 26, 2006
    Publication date: January 1, 2009
    Applicants: THK CO., LTD, THK GMBH
    Inventors: Reinhart G. Welle, Dirk Loeckmann