Golf club and method of making golf club
AssigneeSRI Sports Limited
InventorMasayoshi Nishio
Life of this patent
Estimating the term…
Abstract
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.
Claims9
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≧0.143L−2.79 and (1)
- T≦0.286L−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).
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≧0.143L−2.79 and (1)
- T≦0.286L−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).
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≧0.143L−2.79 (1)
- T≦0.286L−7.14, and (2)
- combining the club shaft and the club head which have the determined torque T and gravity point distance L.
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≧0.143L−2.79 (1)
- T≦0.286L−7.14. (2)
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≧0.143L−2.79 (1)
- T≦0.286L−7.14. (2)
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≧0.143L−2.79 (1)
- T≦0.286L−7.14, and (3)
- combining the club shaft and the club head which have the determined torque T and gravity point distance L.
Dependencies are inferred from the claim text.