Golf club head with a high coefficient of restitution
First Claim
1. A golf club head adapted for attachment to a shaft comprising:
- a shell defining an inner cavity; and
a face having a total face area, and the face including a perimeter zone around an outer perimeter of the face and having a perimeter zone area being from 0 to 20% of the total face area;
a central zone having a first flexural stiffness and including a geometric center of the face, the central zone further having a central zone area being between 15% and 60% of the total face area; and
an intermediate zone surrounding the central zone, the intermediate zone having a second flexural stiffness;
wherein the first flexural stiffness is at least three times greater than the second flexural stiffness and the face exhibits a coefficient of restitution of greater than or equal to 0.81, and wherein the central zone is formed of a first material and the intermediate zone is formed of a second material different from the first material.
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Accused Products
Abstract
The present invention relates to a golf club head provided with a face and a body. The face has a central zone and a intermediate zone adjacent and surrounding the central zone. The central zone has a first flexural stiffness and the intermediate zone has a second flexural stiffness. The club head face is configured and dimensioned such that the first flexural stiffness is significantly greater than the second flexural stiffness such that upon ball impact with the face, the intermediate zone exhibits substantial deformation so that the central zone moves into the club head. At the same time, the central zone exhibits minimal deformation so that it moves into and out of the club head as a unit. Furthermore, the face exhibits a high coefficient of restitution.
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Citations
16 Claims
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1. A golf club head adapted for attachment to a shaft comprising:
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a shell defining an inner cavity; and
a face having a total face area, and the face including a perimeter zone around an outer perimeter of the face and having a perimeter zone area being from 0 to 20% of the total face area;
a central zone having a first flexural stiffness and including a geometric center of the face, the central zone further having a central zone area being between 15% and 60% of the total face area; and
an intermediate zone surrounding the central zone, the intermediate zone having a second flexural stiffness;
wherein the first flexural stiffness is at least three times greater than the second flexural stiffness and the face exhibits a coefficient of restitution of greater than or equal to 0.81, and wherein the central zone is formed of a first material and the intermediate zone is formed of a second material different from the first material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification