Golf club face for drivers
First Claim
1. A driver golf club head having an elongated face region having a face outline defined by an edge so oriented that the moment axis of the smaller of two principal moments of inertia of an area bounded by the edge of the face as projected onto a plane containing an axis of a shaft connected to the head and the centroid of the face region is oriented at least 74 degrees from the shaft axis in such direction as to cause a toe end of the face outline to become higher than a heel end with the club head in ball striking position and where increasing such angle causes the toe end to move higher.
2 Assignments
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Accused Products
Abstract
A golf club, specifically a driver, has a roughly elliptical face shape oriented so that the long axis of the ellipse is tilted upward at the toe at an angle of 20 degrees or more. This causes better agreement between the hit pattern and the perimeter of the club face, with the important result of minimizing the percentage of impacts which are not completely on the face of the club. This arrangement is for drivers since no other clubs are normally used with a tee and a consequence is that tilting the ball strike region of the face is not helpful for such clubs.
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Citations
9 Claims
- 1. A driver golf club head having an elongated face region having a face outline defined by an edge so oriented that the moment axis of the smaller of two principal moments of inertia of an area bounded by the edge of the face as projected onto a plane containing an axis of a shaft connected to the head and the centroid of the face region is oriented at least 74 degrees from the shaft axis in such direction as to cause a toe end of the face outline to become higher than a heel end with the club head in ball striking position and where increasing such angle causes the toe end to move higher.
- 6. A driver golf club head having a heel and a toe and a striking face that has a major axis extending generally from heel to toe aligned with a selected moment axis of a selected moment of inertia of an area of the face passing through a centroid of the face and a minor axis perpendicular to the major axis, a shaft connected to the head, said shaft having an axis at a usual orientation of 54 degrees upward relative to a horizontal plane when the club head is in ball striking position, the head being coupled to the shaft such that the major axis is between 20 and 36 degrees above the horizontal plane with the head in a striking position.
Specification