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US 12,576,314 B2Granted
Golf club head
AssigneeSumitomo Rubber Industries, Ltd.
InventorsTakashi Ono, Naruhiro Mizutani
Life of this patent
Estimating the term…
Abstract
A head has a curvature radius R of a boundary portion between a hitting face and a crown surface, and has a curvature radius S of a boundary portion between the hitting face and a sole surface. The head has, on its toe side, a curvature radius Rt, a curvature radius St, a face height Ft, and a head thickness Tt. The head has, at its center, a curvature radius Rc, a curvature radius Sc, a face height Fc, and a head thickness Tc. The head 4 has, on its heel side, a curvature radius Rh, a curvature radius Sh, a face height Fh, and a head thickness Th. Ft/Tt is smaller than Fh/Th. The head satisfies the following relationship (a) and/or (b): Rt > Rc ≥ Rh ; ( a ) St > Sc ≥ Sh . ( b )
Claims12
A golf club head comprising:
- a hitting face that includes a face center;
- a crown surface;
- and
- a sole surface, wherein
- a boundary portion between the hitting face and the crown surface has a curvature radius denoted by R,
- a boundary portion between the hitting face and the sole surface has a curvature radius denoted by S,
- the hitting face has a face height denoted by F,
- the golf club head has a head thickness denoted by T,
- the curvature radius R at a position spaced 15 mm apart from the face center toward a toe side is referred to as a curvature radius Rt, the curvature radius S at the same position is referred to as a curvature radius St, the face height F at the same position is referred to as a face height Ft, and the head thickness T at the same position is referred to as a head thickness Tt,
- the curvature radius R at a position of the face center is referred to as a curvature radius Rc, the curvature radius S at the same position is referred to as a curvature radius Sc, the face height F at the same position is referred to as a face height Fc, and the head thickness T at the same position is referred to as a head thickness Tc,
- the curvature radius R at a position spaced 15 mm apart from the face center toward a heel side is referred to as a curvature radius Rh, the curvature radius S at the same position is referred to as a curvature radius Sh, the face height F at the same position is referred to as a face height Fh, and the head thickness T at the same position is referred to as a head thickness Th,
- Ft/Tt is smaller than Fh/Th, and
- the golf club head satisfies the following relationship (a) and/or the following relationship (b):
- Rt
- >
- Rc
- ≥
- Rh
- ;
- (
- a
- )
- St
- >
- Sc
- ≥
- Sh
- .
- (
- b
- )
28 more elements
A golf club head comprising:
- a hitting face that includes a face center;
- a crown surface;
- and
- a sole surface, wherein
- a boundary portion between the hitting face and the crown surface has a curvature radius denoted by R,
- a boundary portion between the hitting face and the sole surface has a curvature radius denoted by S,
- the hitting face has a face height denoted by F,
- the golf club head has a head thickness denoted by T,
- the curvature radius R at a position spaced 15 mm apart from the face center toward a toe side is referred to as a curvature radius Rt, the curvature radius S at the same position is referred to as a curvature radius St, the face height F at the same position is referred to as a face height Ft, and the head thickness T at the same position is referred to as a head thickness Tt,
- the curvature radius R at a position of the face center is referred to as a curvature radius Rc, the curvature radius S at the same position is referred to as a curvature radius Sc, the face height F at the same position is referred to as a face height Fc, and the head thickness T at the same position is referred to as a head thickness Tc,
- the curvature radius R at a position spaced 15 mm apart from the face center toward a heel side is referred to as a curvature radius Rh, the curvature radius S at the same position is referred to as a curvature radius Sh, the face height F at the same position is referred to as a face height Fh, and the head thickness T at the same position is referred to as a head thickness Th,
- Ft/Tt is smaller than Fh/Th,
- the golf club head satisfies the following relationship (a) shown below:
- Rt
- >
- Rc
- ≥
- Rh
- ,
- (
- a
- )
- the curvature radius Rt is greater than or equal to 9.5 mm and less than or equal to 13.5 mm,
- the curvature radius Rc is greater than or equal to 7.5 mm and less than or equal to 11.5 mm,
- the curvature radius Rh is greater than or equal to 6.0 mm and less than or equal to 10.0 mm,
- the golf club head has a head volume of greater than or equal to 300 cm3, and
- the golf club head has a loft angle of less than or equal to 13°.
24 more elements
Dependencies are inferred from the claim text.