Patents by Inventor Burdette C. Kelley

Burdette C. Kelley 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: 3994494
    Abstract: A batting practice device for baseball batters having a support frame and a generally horizontally disposed laterally extended boom carried by the frame. A flexible cord has a portion thereof mounted to slidably extend along the boom and a portion which depends from the free end of the boom. A ball is connected to the free end of the depending portion of the cord and a motor is connected to the opposite end of the cord for imparting continuous reciprocal movement to the cord longitudinally thereof to vary the length of cord depending from the boom as the ball moves through an arcuate path of travel toward a batter.
    Type: Grant
    Filed: June 4, 1970
    Date of Patent: November 30, 1976
    Inventor: Burdette C. Kelley