| 摘要 |
<p>PROBLEM TO BE SOLVED: To increase the flying distance of a ball by a method wherein an instantaneous force device which makes the head face of a club at the time of batting instantaneously react, is included in the body head of the club. SOLUTION: For an instantaneous force device 01 which is included in the body head 12 of a club, a head face base 05 integrated with a guide shaft 04 on the tip end side of which a piston 02 is integrally formed, is provided, and the piston 02 is fitted in a cylinder 08, and at the same time, by an instantaneous force spring 07 which is housed in the cylinder 08, the piston 02, i.e., a head face 06 is reciprocatably supported. Then, at the time of a ball-batting, by the reaction instantaneous force of an instantaneous force spring 07 which stretches/contracts, the head face 06 is made to reciprocately react-slide, and the flying distance of a ball is extended. Also, the instantaneous force device 01 may be constituted in such a manner that an airtight sealing bag of air for reaction is housed in the body head 12 of the club, and in the airtight sealing bag, an elasticity-transmitting material with elasticity which works on the head face is enclosed at a high pressure.</p> |
