Patents by Inventor Alan E. Doop

Alan E. Doop 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).

  • Patent number: 5492517
    Abstract: Disclosed herein is a device that facilitates contemporaneous exercise of the upper and lower body. The exercise device includes a treadmill rotatably mounted relative to a frame and a pair of arm poles pivotally mounted relative to the frame. Resistance to operation of the treadmill is provided by a flywheel that rotates subject to frictional resistance provided by a drag strap in contact with the flywheel. A shaft cooperates with the flywheel to maintain tension in the drag strap, and the tension may be adjusted by rotating the shaft about its longitudinal axis. Resistance to operation of the arm poles is provided by friction pads disposed between the arm poles and structure associated with the frame.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: February 20, 1996
    Assignee: NordicTrack, Inc.
    Inventors: James R. Bostic, Alan E. Doop, Michael E. Heutmaker
  • Patent number: D360915
    Type: Grant
    Filed: May 27, 1994
    Date of Patent: August 1, 1995
    Assignee: NordicTrack, Inc.
    Inventors: James R. Bostic, Alan E. Doop, Michael E. Heutmaker, Stephen S. Peterson