Patents by Inventor John L. Bertilson

John L. Bertilson 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: 7476157
    Abstract: A cue ball point of aim training device, comprising a target, a target positioning member, a transverse member, and a support structure provided for aiming a cue ball with respect to a given object ball. The base of the support structure, when positioned on the playing surface, resides to one side of a line bisecting the object ball along the desired direction of travel, and can remain in place during a shot on the object ball. The target, representing where the center of a cue ball needs to be to effectuate a desired trajectory for a given object ball, is positioned by the other components of the device in an opposite direction along the line of intended travel of the object ball. Through repeated use in practice, the cue ball point of aim training device may aid in improving one's skill in playing the game of billiards.
    Type: Grant
    Filed: April 17, 2006
    Date of Patent: January 13, 2009
    Inventor: John L. Bertilson