US Patent 7819762 Golf training aid

A golfer training aid for use in teaching a golfer how to square up the face of the golf club at impact resulting in golf shots having substantial accuracy. The device is a one-piece or multi-piece flat-face practice golf ball. The one-piece or multi-piece practice golf ball is shaped with a flat face 2 on one side. (FIG. 1B). The flat face has a 90-degree or right angle cut 4 to the radial portion or circular embodiment 3 of the semi-sphere 1. The importance of this unique feature is that it enables the golfer to position the flat side of the club face with the flat face of the practice golf ball and contact the ball flush and correctly.