# US 10,245,478 B2 · Golf club head

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- Number: US 10,245,478 B2
- Document ID: US10245478B2
- Status: Granted
- Kind: B2
- Application number: 15/251,240
- Filed: 2016-08-30
- Published: 2017-05-11
- Granted: 2019-04-02
- Earliest claimed: 2015-11-06
- Assignees: Bridgestone Sports Co., Ltd.
- Applicants: Bridgestone Sports Co., Ltd.
- Inventors: Tadahiro Narita; Wataru Ban
- Web page: https://patentgrep.com/patent/US10245478B2

## CPC

- A63B 53/0466: {wood-type}
- A63B 53/02: Joint structures between the head and the shaft
- A63B 60/52: with slits
- A63B 53/0408: {characterised by specific dimensions, e.g. thickness}
- A63B 53/0437: {with special crown configurations}
- A63B 2225/01: Special aerodynamic features, e.g. airfoil shapes, wings or air passages
- A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H)

## Abstract

A golf club head includes: a crown portion; a sole portion; a face portion; and a hosel portion. The crown portion includes a concave portion that starts from the face portion, passes through a boundary portion of the hosel portion and the crown portion, and extends toward a back side. The concave portion includes a range from the face portion toward the back side where a width of the concave portion is larger than a depth of the concave portion. The range passes on a toe side of the hosel.

## Claims

### Claim 1

A golf club head comprising:
a crown portion;
a sole portion;
a face portion; and
a hosel portion,
wherein the crown portion includes a concave portion that starts from a heel-side portion of the face portion which is toward a heel side from a center of the face portion in a toe-heel direction, passes through a boundary portion of the hosel portion and the crown portion on a toe side of the hosel portion, does not pass through a heel side of the hosel portion, and extends toward a back side,
the concave portion includes a range from the face portion toward the back side where a width of the concave portion is larger than a depth of the concave portion,
the concave portion is disposed distant from a center point of the crown on a line extending between the hosel portion and an outermost toe portion of the golf club head,
the range passes on a toe side of the hosel,
the concave portion includes an edge on a side of the face portion, the edge being recessed from an upper edge of the face portion to the sole portion, and
the crown portion does not include, other than the concave portion, a concave portion extending in a face-back direction.

### Claim 2 (depends on 1)

The golf club head according to claim 1, wherein the width of the concave portion increases along an outer face of the hosel portion from a toe-side end of the outer surface of the hosel portion to a side of the face portion.

### Claim 3 (depends on 1)

The golf club head according to claim 1, wherein the concave portion continues to an upper surface of the crown portion by gradually decreasing the depth toward the back side.

### Claim 4 (depends on 1)

The golf club head according to claim 1, wherein a continuously connected curved surface is formed from a toe-side outer face of the hosel portion to a deepest part of the concave portion.

### Claim 5 (depends on 1)

The golf club head according to claim 1, wherein in planar view of the head, the edge of the concave portion on the side of the face portion is positioned on the same line as the upper edge of the face portion.

### Claim 6 (depends on 1)

The golf club head according to claim 1, wherein the width of the concave portion is in a range from 5 mm (inclusive) to 40 mm (inclusive),
and the depth of the concave portion is in a range from 1 mm (inclusive) to 10 mm (inclusive).

### Claim 7 (depends on 1)

The golf club head according to claim 1, an edge of the concave portion on the back side is in the crown portion.