| 摘要 |
<p>A logical putter not based on a conventional experiential rule but based on measurement data. A distance-to-cup measuring rule is such that grip end face of the putter is aligned with the height of eyes and then the putter is suspended right above a ball while stretching the arms. When a cup is looked under that state, distance from a position where the line of sight intersects the grip part to the cup is determined. Since the measurement of distance depends upon the individual height, height of a player is preset by an electronic circuit contained in the grip part and a microcomputer calculates a distance count up to the cup by judging and inputting the intersecting position of the line of sight through sequential lighting of LEDs arranged in series. Furthermore, a putting operation is regarded as pendulum operation integrating the arm and the putter and then a recommended take-club-back amount is determined theoretically for the distance count of a rolling ball and delivered to a liquid crystal display along with the distance count. Since the measured distance count and the recommended take-club-back amount depend significantly on the inclination angle of a green surface, an inclination angle sensor is built in the vicinity of the center of the putter head, and distance count and take-back amount determined previously are corrected automatically based on an angle measured by laying the putter.</p> |
