Patents by Inventor Ronald Kubrak

Ronald Kubrak 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: 4129110
    Abstract: A housing has an open-topped hemispherical recess in its top to accommodate a spherical ball. The ball is attached to one end of a cable which is itself secured to a spring loaded reel inside the housing. When ejector means are operated by the user's foot, the ball is ejected upwardly out of the recess, so as to enable the ball to be hit by a bat. As the ball travels after being hit, the cable reels off the reel, winding up the spring on the reel. The spring on the reel then retracts the cable to bring the ball back for a subsequent use.
    Type: Grant
    Filed: January 6, 1977
    Date of Patent: December 12, 1978
    Inventor: Ronald Kubrak