Method of adjusting coefficient of restitution of face of golf club head
First Claim
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1. A method of adjusting a coefficient of restitution of the face of a golf club head comprising the step of fixing an assistant device, which is made of metal, on a back of the face to reduce the coefficient of restitution of the face.
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Abstract
The present invention provides a method of adjusting a coefficient of restitution (COR) of the face of a golf club head. A metallic assistant device is fixed on a center of a back of the face by friction welding or brazing. The metallic assistant may increases the central thickness of the face that may reduce the COR of the face.
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15 Claims
- 1. A method of adjusting a coefficient of restitution of the face of a golf club head comprising the step of fixing an assistant device, which is made of metal, on a back of the face to reduce the coefficient of restitution of the face.
- 11. A method of adjusting a coefficient of restitution of the face of a golf club head comprising the step of fixing an assistant device, which is made of metal, on a back of the face by friction welding, wherein the assistant device and the face are made of the same material.
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15. A method of adjusting a coefficient of restitution of the face of a golf club head comprising the step of fixing an assistant device, which is made of metal, on a back of the face by brazing, wherein the assistant device and the face are made of different materials.
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