Patents by Inventor James M. Kropkowski

James M. Kropkowski 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: 4877246
    Abstract: The device mixes and selects a plurality of game balls sequentially and includes a rotating chamber which contains a plurality of balls located in the bottom portion thereof. The chamber has a plurality of cups mounted interiorly thereof, the cups being capable of sequentially selecting one of the balls when the chamber is rotated in the first direction and mixing the balls when the chamber is rotated in the second direction. The cups select a ball and convey it to a predetermined exit location. A first ramp is located at the exit location. A second ramp coacts with the first ramp and conveys the balls to a point. A third ramp coacts with the second ramp and is pivotedly mounted about the point. A protrusion is connected across the third ramp for inhibiting further movement of the selected balls when the ramp is in a first position and for permitting the balls to pass beneath the protrusion when the ramp is in its second pivoted position.
    Type: Grant
    Filed: July 8, 1986
    Date of Patent: October 31, 1989
    Inventor: James M. Kropkowski