Patents by Inventor Woodrow D. Nelson

Woodrow D. Nelson 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: 3945270
    Abstract: A rotary motion transmitting device including traction rollers for transmitting motion in either direction from an input shaft to an output shaft. One shaft carries an internal traction ring and the other shaft, whose axis is parallel to, but slightly spaced from, the traction ring shaft, extends into the traction ring and carries an inner roller to form a varying annular space. Three intermediate traction rollers are angularly disposed within this annular space and are urged into firm Hertzian contact with both the traction ring and the inner roller by means of the torque transmitted through the device. The five traction rollers have a sum of degrees of freedom of movement in a plane perpendicular to the axes of the rollers equal to 8, 9 or 10.
    Type: Grant
    Filed: February 18, 1975
    Date of Patent: March 23, 1976
    Assignee: Wedgtrac Corporation
    Inventors: Bertel S. Nelson, Woodrow D. Nelson