Patents by Inventor Ronald M. Kronenberger

Ronald M. Kronenberger 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: 4961572
    Abstract: A grip guide for a tennis racquet handle that positions the player's hand in the proper position on the racquet handle, primarily for hitting Eastern backhand shots but also for various other shots if desired. The device extends, when secured to the racquet handle, across the left bevel of the handle and at least a part of the top surface of the handle. It has a nonplanar bottom shaped to provide a reliable, non-skid gripping contact with at least two planar surfaces of the racquet handle. It has a side wall cross section in the approximate shape of a rounded "V" with its open end facing away from the free end of the racquet handle, one arm of the rounded "V" extending circumferentially along the left bevel of the handle a substantial distance away from the other arm in a direction generally opposite the direction in which the other arm extends. The arm of the rounded "V" that extends along the top surface of the racquet handle is preferably the longer arm.
    Type: Grant
    Filed: July 3, 1989
    Date of Patent: October 9, 1990
    Inventors: Paul Badillo, Ronald M. Kronenberger