| 摘要 |
<p>PURPOSE:To confirm the turning locus of a club head by installing a luminous article having a proper degree of brightness at a desired place on a club head and permitting the luminous article to turn together with the club head when the golf club is swung. CONSTITUTION:A luminous article which possesses the brightness permitting the confirmation by eyes at a place where the direct rays of the sun does not irradiate is applied on a club head. The luminous article is applied at a point on a plane which includes the line PE connecting a prescribed ball hit point 2 on the face of the club head in the case where the golf club is swung down to the position where the club head hits a golf ball and the direction of the eye of a player who swings the club and the turning locus PS of the club head 1 passing through the ball hit point P. Accordingly, the player who swings the club can see the line L drawn by the turning locus of the luminous article in superposition with the turning locus of the ball hit point P, and can correct his swing form by confirming the turning locus of the ball hit point p by confirming the line L due to the luminous article.</p> |
