# US 9,039,543 B2 · Golf club head

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- Number: US 9,039,543 B2
- Document ID: US9039543B2
- Status: Granted
- Kind: B2
- Application number: 13/327,987
- Filed: 2011-12-16
- Published: 2012-07-05
- Granted: 2015-05-26
- Earliest claimed: 2010-12-29
- Assignees: SRI Sports Limited
- Applicants: Naruhiro Mizutani
- Inventors: Naruhiro Mizutani
- Web page: https://patentgrep.com/patent/US9039543B2

## CPC

- A63B 60/54: with means for damping vibrations
- A63B 53/047: {iron-type}
- A63B 53/042: {the face insert consisting of a material different from that of the head}
- A63B 53/0425: {the face insert comprising two or more different materials}
- A63B 53/0458: {with non-uniform thickness of the impact face plate}
- A63B 53/0466: {wood-type}
- A63B 53/0487: {for putters (A63B53/065 takes precedence)}
- A63B 2209/00: Characteristics of used materials
- A63B 2209/02: with reinforcing fibres, e.g. carbon, polyamide fibres
- A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H)

## Abstract

A head 1 is provided with a head body h1 and an adherend s1. The adherend s1 has a cast resin 53 formed by casting, a metal part 51, and a vibration absorber 55. The cast resin 53 has a formed surface formed by the metal part 51. The cast resin 53 further may have a formed surface formed by the vibration absorber 55. A base material of the cast resin 53 is an epoxy resin, for example. The cast resin 53 may have a cutting surface PL1. The cutting surface PL1 may be a joint surface of the adherend to the head body h1. Preferably, a loss tangent tan δ of the vibration absorber 55 is 0.07 or greater and 0.25 or less.

## Claims

### Claim 1

A golf club head comprising: a head body; and an adherend, wherein the adherend has a cast resin formed by casting, a metal part, and a vibration absorber,
wherein the cast resin constitutes a part of the adherend in a state in which the cast resin is cast in a liquid state and cured, the cast resin has a formed surface formed by the metal part, and the cast resin further has a formed surface formed by the vibration absorber.

### Claim 2 (depends on 1)

The golf club head according to claim 1, wherein the vibration absorber is exposed.

### Claim 3 (depends on 1)

The golf club head according to claim 1, wherein the vibration absorber has a portion sandwiched between the cast resin and the metal part.

### Claim 4 (depends on 1)

The golf club head according to claim 1, wherein the metal part has a first portion and a second portion;
the second portion is made of a surface forming layer;
a portion in which the first portion and the second portion are brought into contact exists; and
a portion in which the cast resin and the second portion are brought into contact exists.

### Claim 5 (depends on 1)

The golf club head according to claim 1, wherein the metal part has a first portion and a second portion;
the second portion is made of a surface forming layer;
a portion in which the first portion and the second portion are brought into contact exists; and
the vibration absorber has a portion sandwiched between the first portion and the second portion.

### Claim 6 (depends on 1)

The golf club head according to claim 1, wherein the cast resin has a cutting surface, and the cutting surface is a joint surface of the adherend to the head body.

### Claim 7 (depends on 6)

The golf club head according to claim 6, wherein the cast resin has a thin-walled part having a thickness equal to or less than 2.5 mm between the cutting surface and the metal part.

### Claim 8 (depends on 1)

The golf club head according to claim 1, wherein a loss tangent tan δ of the vibration absorber is 0.07 or greater and 0.25 or less.

### Claim 9

A golf club head comprising: a head body; and an adherend, wherein the adherend has a cast resin formed by casting, a metal part, and a vibration absorber,
wherein a base material of the cast resin is an epoxy resin, the cast resin constitutes a part of the adherend in a state in which the cast resin is cast in a liquid state and cured, and the cast resin has a formed surface formed by the metal part.

### Claim 10

A golf club head comprising: a head body; and an adherend, wherein the adherend has a cast resin formed by casting, a metal part, and a vibration absorber,
wherein the cast resin constitutes a part of the adherend in a state in which the cast resin is cast in a liquid state and cured, the cast resin has a formed surface formed by the metal part, the cast resin has a cutting surface, and the cutting surface is a joint surface of the adherend to the head body.