Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Hirotaka Nakamura0
Date of Patent
May 11, 2021
Patent Application Number
16696564
Date Filed
November 26, 2019
Patent Citations
Patent Primary Examiner
Patent abstract
A golf club shaft includes a tip end, a butt end, a first anisotropic portion that is twisted in a first direction in conjunction with a bending of the golf club shaft at a circumferential bending position, and a second anisotropic portion that is twisted in a second direction in conjunction with the bending. The second anisotropic portion is located on a tip end side relative to the first anisotropic portion. The second direction is opposite to the first direction. In the shaft, the twist accompanied by the bending in the first anisotropic portion can be offset by the twist accompanied by the bending in the second anisotropic portion.
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