| 摘要 |
PURPOSE: Provided is a length-adjustable golf driver being freely controlled in entire length of the driver by a golf player to selectively obtain an optimum swing angle, thereby allowing swing with a desired angle. CONSTITUTION: The driver has a shaft(6) with a length same to existing shafts; female thread on one end of the shaft in longitudinal direction; a grip(4') made of rubber material fitted into a longitudinal end of the shaft(6). Any one of plural couplings(61,62,63) made of conventional alloy material is provided on the longitudinal end in order to extend length of the shaft(6). The grip(4') is fitted into the couplings(61,62,63) because the grip(4') is selectively connected to any one of the couplings(61,62,63) and entire length of the driver is freely regulated. The couplings(61,62,63) have male threads(61a,62a,63a) having the same diameter and coupled with the female thread. |
