Patents by Inventor Norman J. Grifhorst

Norman J. Grifhorst 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: 4343470
    Abstract: A new ball rolling game for the enjoyment of one or more players. The game having an inclined ramp mounted on top of a plurality of semi-circular dividers. By accurately rolling a ball as high as possible up the inclined ramp, the ball will fall beside one of the dividers having a higher score than a divider at the lower end of the ramp.
    Type: Grant
    Filed: February 9, 1981
    Date of Patent: August 10, 1982
    Inventor: Norman J. Grifhorst
  • Patent number: 4190250
    Abstract: A game apparatus for the enjoyment of both young and old alike. The game is played on a sloping table wherein a ball is bounced off a launch board at one end of the table on to a portion of carpet for reducing the velocity of the ball. If the ball is accurately thrown, the ball bounces off the carpet and contacts a plurality of rectangular shaped tilted bumpers which carom the rolling ball down a row of staggered bumpers forming a scoring lane on one side of the table and against a score hole bumper and into a score hole. If the ball is inaccurately thrown, the ball rolls down the table and into a return hole.
    Type: Grant
    Filed: May 15, 1978
    Date of Patent: February 26, 1980
    Inventor: Norman J. Grifhorst