Patent ID: 8029383
Filing Date: 2011-10-04
Classification: A63B

Abstract:
1. A golf club comprising a shaft, a head, an inner member and a screw member, wherein the head has a hosel portion and a receiving surface, the hosel portion has a screw portion formed on an internal surface or external surface thereof and a hosel hole, the screw member has a through hole for causing the shaft and the inner member to penetrate therethrough, a screw portion and a downward surface, a screw portion of the screw member and a screw portion of the hosel portion are coupled to each other, the inner member has a shaft inserting hole opened on an upper end side thereof, an engaging surface which can be engaged with the receiving surface, and an upward surface, at least a part of the inner member is inserted into the hosel hole, the shaft and the shaft inserting hole are fixed to each other through bonding and/or fitting, the downward surface of the screw member and the upward surface of the inner member are engaged with each other directly or indirectly, and the inner member is controlled to be moved upward with respect to the hosel hole through the engagement, each of the engaging surface and the receiving surface have a plurality of inclined planar surfaces which are inclined to approach a shaft axis in a downward direction, the inclined planar surfaces of the receiving surface of the head and the inclined planar surfaces of the engaging surface of the inner member are engaged with each other directly or indirectly, and the inner member is controlled to be rotated with respect to the hosel hole through the engagement, and the inclined planar surfaces of the engaging surface of the inner member extend through the entire engaging surface to a bottom surface of the inner member, and fully surround an entire circumference of the inner member, wherein top ends of the inclined planar surfaces form a perimeter of the upward surface of the inner member.