Patents by Inventor Cheri K. Kempf

Cheri K. Kempf 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).

  • Ball pitch training device
    Patent number: 5472187
    Abstract: The device of the present invention is substantially disk-shaped having two flat sides lying in parallel planes substantially one-inch apart and a circular profile with a circular perimeter surface connecting the two circular flat sides. The device is molded from a urethane material having a durometer hardness of approximately 60. When used as a training device for softball pitching, the device will have a 12" circumference, a 3.75" diameter, a thickness of 1", a weight of 6.25 ounces and a pair of molded seams on opposite sides of the circular perimeter; two seams being 1.5" apart and two seams being 3" apart.
    Type: Grant
    Filed: February 10, 1995
    Date of Patent: December 5, 1995
    Inventor: Cheri K. Kempf