Metal wood club with improved hitting face
First Claim
1. A golf club head comprising:
- a hitting face comprisinga central zone having a first flexural stiffness; and
an intermediate zone concentric with the central zone, wherein the intermediate zone has a second flexural stiffness, and wherein the first flexural stiffness is higher than the second flexural stiffness such that on ball impact, deformation of the intermediate zone allows the central zone to move into and out of the club as a unit and the club exhibits a primary natural frequency of less than 2900 Hertz, andwherein the central zone comprises about 15% to about 60% of the hitting face.
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Accused Products
Abstract
A hitting face of a golf club head having improved flexural stiffness properties. In one embodiment, the hitting face is made from multiple materials. The main portion of the hitting face is a plate-like face made from a first material having a first density. A dense insert made from a second material having a second density that is greater than the first density is attached directly or indirectly to the plate-like face at or near the geometric center thereof. The dense insert increases the flexural stiffness of in a central zone of the hitting face so that a golf club head that has a larger zone of substantially uniform high initial ball speed. In another embodiment, the hitting face includes an insert that includes main plate and at least one wing extending therefrom. The insert is welded to the golf club head so that the main plate does not deflect separately from the remainder of the hitting face. The geometry of the insert controls the stiffness in the axial directions.
232 Citations
20 Claims
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1. A golf club head comprising:
a hitting face comprising a central zone having a first flexural stiffness; and an intermediate zone concentric with the central zone, wherein the intermediate zone has a second flexural stiffness, and wherein the first flexural stiffness is higher than the second flexural stiffness such that on ball impact, deformation of the intermediate zone allows the central zone to move into and out of the club as a unit and the club exhibits a primary natural frequency of less than 2900 Hertz, and wherein the central zone comprises about 15% to about 60% of the hitting face. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A golf club head comprising:
a hitting face comprising a central zone having a first flexural stiffness; and an intermediate zone concentric with the central zone, wherein the intermediate zone has a second flexural stiffness, and wherein the first flexural stiffness is higher than the second flexural stiffness such that on ball impact, deformation of the intermediate zone allows the central zone to move into and out of the club as a unit and the club exhibits a primary natural frequency of less than 2900 Hertz, and wherein the central zone is formed out of an anisotropic material. - View Dependent Claims (13, 14, 15)
- 16. The golf club head of claim l5, wherein the perimeter zone is thicker than the intermediate zone.
Specification