Golf club and method of making golf club
View Patent ↗A wood-type golf club including a club shaft and a club head, wherein the club length is in a range of from 43 to 48 inches, the volume of the club head is in a range of not less than 250 cc, and the torque T in degree of the club shaft and the gravity point distance L in mm between the gravity point of the club head and the center line of the club shaft satisfy conditions (1) T≧0.143L−2.79 and (2) T≦0.286L−7.14.
1. A method of making a golf club, the golf club including a club shaft and a club head attached to the end of the club shaft, the method comprising
measuring a torque T in degree of the club shaft,
measuring a gravity point distance L in mm between the gravity point of the club head and the center line of the club shaft,
determining whether the torque T and gravity point distance L satisfy the following conditions (1) and (2)
T≧ 0.143 L− 2.79 and (1)
T≦ 0.286 L− 7.14, and (2)
assembling the club shaft and club head when their torque T and gravity point distance L satisfy the conditions (1) and (2).
2. The method of making a golf club according to claim 1 , which further comprises
making a club head which has a head volume in a range of not less than 250 cc and the gravity point distance L in a range of from 33 to 41 mm.
3. The method of making a golf club according to claim 1 , which further comprises
making a club shaft which provides a club length in a range of from 43 to 48 inches.
4. The method of claim 1 , wherein the torque T and the gravity point distance L satisfy said condition (1) and the following condition (3)
(3) T≦0.286L−7.89.
5. A method of making a golf club, the golf club including a club shaft and a club head attached to the end of the club shaft, the method comprising
providing a torque T in degree of the club shaft,
providing a gravity point distance L in mm between the gravity point of the club head and the center line of the club shaft,
determining whether the obtained torque T and gravity point distance L satisfy the following conditions (1) and (2)
T≧ 0.143 L− 2.79 and (1)
T≦ 0.286 L− 7.14, and (2)
assembling the club shaft and club head when their torque T and gravity point distance L satisfy the conditions (1) and (2).
6. A method of making a wood-type golf club including a club shaft and a club head attached to the end of the club shaft, comprising
determining a torque T in degree of the club shaft and
a gravity point distance L in mm between the gravity point of the club head and the center line of the club shaft by determining whether the torque T and gravity point distance L satisfy the following conditions (1) and (2) so that the following conditions (1) and (2) are satisfied
T≧ 0.143 L− 2.79 (1)
T≦ 0.286 L− 7.14, and (2)
combining the club shaft and the club head which have the determined torque T and gravity point distance L.
7. A method of designing a wood-type golf club including a club shaft and a club head attached to the end of the club shaft, comprising
providing a torque T in degree of the club shaft, and
determining a gravity point distance L in mm between the gravity point of the club head and the center line of the club shaft by determining whether the torque T and gravity point distance L satisfy the following conditions (1) and (2) so as to satisfy the following conditions (1) and (2)
T≧ 0.143 L− 2.79 (1)
T≦ 0.286 L− 7.14. (2)
8. A method of designing a wood-type golf club including a club shaft and a club head attached to the end of the club shaft, comprising
providing a gravity point distance L in mm between the gravity point of the club head and the center line of the club shaft, and
determining a torque T in degree of the club shaft by determining whether the torque T and gravity point distance L satisfy the following conditions (1) and (2) so as to satisfy the following conditions (1) and (2)
T≧ 0.143 L− 2.79 (1)
T≦ 0.286 L− 7.14. (2)
9. A method for improving the rebound of a wood-type golf club including a club shaft and a club head attached to the end of the club shaft, comprising
determining a torque T in degree of the club shaft and
a gravity point distance L in mm between the gravity point of the club head and the center line of the club shaft by determining whether the torque T and the gravity point distance L satisfy the following conditions (1) and (2) so that the following conditions (1) and (2) are satisfied
T≧ 0.143 L− 2.79 (1)
T≦ 0.286 L− 7.14, and (3)
combining the club shaft and the club head which have the determined torque T and gravity point distance L.