Golf club shaft
AssigneeDunlop Sports Co. Ltd.
InventorTatsuya YASHIKI
Life of this patent
Estimating the term…
Abstract
A section where the tip side partial bias layer exists in an axis direction of the shaft is defined as a section T; a section where the back end side partial bias layer exists in the axis direction of the shaft is defined as a section B; and a shaft section inserted into a hosel of a head in the axis direction of the shaft is defined as a section H. A part of the section T overlaps with the section H. An overlapping section TB in which the section T overlaps with the section B exists. The whole overlapping section TB is located on a back end Bt side of the shaft from the section H. A center position Px of the overlapping section TB is located on a tip side of the shaft from a center position Pc of the shaft.
Claims20
A golf club shaft comprising:
- a straight layer;
- a tip side partial bias layer;
- and
- a back end side partial bias layer, wherein
- when a section where the tip side partial bias layer exists in an axis direction of the shaft is defined as a section T;
- a section where the backend side partial bias layer exists in the axis direction of the shaft is defined as a section B;
- and
- a shaft section inserted into a hosel of ahead in the axis direction of the shaft is defined as a section H,
- a part of the section T overlaps with the section H;
- an overlapping section TB in which the section T overlaps with the section B exists;
- the whole overlapping section TB is located on a back end side of the shaft from the section H;
- and
- a center position Px in the axis direction of the overlapping section TB is located on a tip side of the shaft from a center position Pc in the axis direction of the shaft.
Dependencies are inferred from the claim text.