Iron golf club head
AssigneeBridgestone Sports Co., Ltd.
InventorsYasunori Imamoto, Hisashi Yamagishi
Life of this patent
Estimating the term…
Abstract
An iron golf club head includes a head main body and an FRP body. The head main body includes a face portion, a first face along the face portion, second faces, and a recess behind the head portion. The second faces continue from a rear face of the face portion to the first face. The recess is defined by the first face and the second faces. The hollow FRP body is disposed in the recess, overlaps the first face and the second faces, and closes an opening portion of the recess. At least a part of crossing corner portions between the first face and the second faces has a curved face.
Claims12
An iron golf club head comprising:
- a head main body including:
- a hitting face;
- a first face along the hitting face;
- second faces, which continue from a rear of the head main body to the first face, the first face and the second faces defining a recess behind the hitting face;
- and
- a corner portion between the first face and the second faces, at least a part of the corner portion having a curved face;
- wherein
- a hollow FRP body, which is disposed in the recess, overlaps the first face and the second faces, and closes an opening portion of the recess;
- and
- wherein a curvature radius of the curved face is in a range of from 1.5 mm to 80 mm, and
- further comprising a resin layer which has a higher specific gravity than the head main body.
An iron golf club head comprising:
- a head main body including:
- a hitting face;
- a first face along the hitting face;
- second faces, which continue from a rear of the head main body to the first face, the first face and the second faces defining a recess behind the hitting face;
- a corner portion between the first face and the second faces, at least a part of the corner portion having a curved surface;
- wherein
- a hollow FRP body, which is disposed in the recess, overlaps the first face and the second faces, and encloses an opening portion of the recess, and
- the FRP body comprises a lamination of a plurality of sheets of UD prepreg or a lamination of a plurality of sheets of UD prepreg and cross prepreg, and
- further comprising a resin layer which has a higher specific gravity than the head main body.
Dependencies are inferred from the claim text.