Patents by Inventor Reuben E. Nippoldt

Reuben E. Nippoldt 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).

  • Trackball mechanism
    Patent number: 4952919
    Abstract: A trackball-type input device (10) uses a retainer (114) to secure a ball (80) to a housing (12) so that a large segment (164) of the ball (80) protrudes from the housing (12) for manipulation by the user, thereby affording precise control over rotational movement of the ball (80).
    Type: Grant
    Filed: April 6, 1989
    Date of Patent: August 28, 1990
    Assignee: Tektronix, Inc.
    Inventor: Reuben E. Nippoldt