Golf club head with variable flexural stiffness for controlled ball flight and trajectory
First Claim
1. A golf club head adapted for attachment to a shaft and having a hitting face, wherein the hitting face comprises a directional control portion, said directional control portion comprises two or more non-concentric zones having different flexural stiffness with at least a varying crown to sole flexural stiffness, such that when the hitting face impacts a golf ball the zones exhibit different degrees of deformation to selectively control the direction of the flight of the golf ball, wherein the flexural stiffness is asymmetric about at least one axis on the hitting face, and the coefficient of restitution of the club head is greater than about 0.81.
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Accused Products
Abstract
The present invention relates to a golf club head with a hitting face. The hitting face comprises a directional control portion, which has at least two zones with different flexural stiffness, such that when the hitting face strikes a golf ball the two zones deform differently to selectively control the direction of the flight of the golf ball. The directional control portion may comprise an upper zone and a lower zone, where the upper zone has a lower flexural stiffness. Alternatively, the lower zone has a lower flexural stiffness. On the other hand, the directional control portion may comprise a left zone and a right zone, and either the left or right zone may have a lower flexural stiffness to selectively control the lateral launch angle either to the left of right. The hitting face may further comprise a central zone disposed within the directional control zone, wherein the central zone has a flexural stiffness of at least about three times greater than the flexural stiffness of the directional control zone.
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Citations
10 Claims
- 1. A golf club head adapted for attachment to a shaft and having a hitting face, wherein the hitting face comprises a directional control portion, said directional control portion comprises two or more non-concentric zones having different flexural stiffness with at least a varying crown to sole flexural stiffness, such that when the hitting face impacts a golf ball the zones exhibit different degrees of deformation to selectively control the direction of the flight of the golf ball, wherein the flexural stiffness is asymmetric about at least one axis on the hitting face, and the coefficient of restitution of the club head is greater than about 0.81.
Specification