Patent ID: 7066823
Filing Date: 2006-06-27
Classification: A63B

Abstract:
1. A device for determining finger hole placement of bowling balls comprising; a first element defining a meridian plane on a bowling ball; first scale means for enabling distance determination between placement of holes in the bowling ball, said first scale means coupled with said element defining said meridian plane; a second element defining a second plane about the surface of the ball, second scale means for enabling distance determination along the said second plane, said second scale means coupled with said second element; a third element rigidly coupled to said first element, and passing through a cutout in said second element; third scale means for enabling distance to be determined between said first element and said second element, fourth scale means for enabling an angular measurement between the said meridian plane defined by said first element and said second plane defined by said second element, said third and fourth scale means coupled with said third element; a fourth element which provides a means for temporarily rigidly coupling said second element with said third element, said fourth element also being disengagable to permit said second element to move relative to said third element; a fifth element which provides a means for maintaining the relative position of a point on said first element with a selected point on the surface of a bowling ball while allowing the device to pivot about said point, said fifth element also being disengageable so as to permit movement of said first element with respect to the surface of a bowling ball.