Golf club head with flexure
First Claim
Patent Images
1. A golf club head, comprising:
- a crown defining an upper surface of the golf club head;
a sole defining a lower surface of the golf club head, comprising a transmittal portion, a flexure and a rear portion;
a side wall extending between the crown and the sole;
a hosel extending from the crown and including a shaft bore; and
a face defining a ball-striking surface and intersecting the transmittal portion at a leading edge,wherein the flexure is spaced aftward of the ball-striking surface by the transmittal portion, and comprises a front wall, an apex and a rear wall, wherein the front wall extends into a cavity defined by the golf club head and the rear wall extends into the cavity and the front wall and the rear wall are coupled at the apex,wherein a portion of the face comprises an outer layer forming a portion of the ball striking surface, a back layer and a chip insert, and at least one of the outer layer and back layer defines a recess and the chip insert is disposed in the recess,wherein the thickness of the transmittal portion is at least 50% of a minimum face thickness, andwherein the flexure is spaced from the ball-striking surface by a distance that is between 25% and 45% of the CG-Z-fc distance between the geometric face center of the golf club head and the center of gravity of the golf club head along a horizontal Z-axis that extends from the front to the aft of the golf club head.
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Accused Products
Abstract
A golf club head including a crown, a sole, a hosel, a face and a flexure. The face is configured to provide varying stiffness while minimizing the change in thickness across the face. The flexure provides compliance during an impact between the golf club head and a golf ball.
208 Citations
20 Claims
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1. A golf club head, comprising:
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a crown defining an upper surface of the golf club head; a sole defining a lower surface of the golf club head, comprising a transmittal portion, a flexure and a rear portion; a side wall extending between the crown and the sole; a hosel extending from the crown and including a shaft bore; and a face defining a ball-striking surface and intersecting the transmittal portion at a leading edge, wherein the flexure is spaced aftward of the ball-striking surface by the transmittal portion, and comprises a front wall, an apex and a rear wall, wherein the front wall extends into a cavity defined by the golf club head and the rear wall extends into the cavity and the front wall and the rear wall are coupled at the apex, wherein a portion of the face comprises an outer layer forming a portion of the ball striking surface, a back layer and a chip insert, and at least one of the outer layer and back layer defines a recess and the chip insert is disposed in the recess, wherein the thickness of the transmittal portion is at least 50% of a minimum face thickness, and wherein the flexure is spaced from the ball-striking surface by a distance that is between 25% and 45% of the CG-Z-fc distance between the geometric face center of the golf club head and the center of gravity of the golf club head along a horizontal Z-axis that extends from the front to the aft of the golf club head. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A golf club head, comprising:
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a crown defining an upper surface of the golf club head; a sole defining a lower surface of the golf club head, comprising a transmittal portion, a flexure and a rear portion; a side wall extending between the crown and the sole; a hosel extending from the crown and including a shaft bore; and a face defining a ball-striking surface and intersecting the transmittal portion at a leading edge, wherein the flexure is spaced aftward of the ball-striking surface by the transmittal portion, and comprises a front wall, an apex and a rear wall, wherein the front wall extends into a cavity defined by the golf club head and the rear wall extends into the cavity and the front wall and the rear wall are coupled at the apex, wherein a portion of the face comprises an outer layer forming a portion of the ball striking surface, a back layer and a chip insert, and at least one of the outer layer and back layer defines a recess and the chip insert is disposed in the recess, wherein the thickness of the apex is different from the greater of the thickness of the front wall and the thickness of the rear wall by less than 30%, and wherein the flexure is spaced from the ball-striking surface by a distance that is between 25% and 45% of the CG-Z-fc distance between the geometric face center of the golf club head and the center of gravity of the golf club head along a horizontal Z-axis that extends from the front to the aft of the golf club head. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A golf club head, comprising:
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a crown defining an upper surface of the golf club head; a sole defining a lower surface of the golf club head, comprising a transmittal portion, a flexure and a rear portion; a side wall extending between the crown and the sole; a hosel extending from the crown and including a shaft bore; and a face defining a ball-striking surface and intersecting the transmittal portion at a leading edge, wherein the flexure is spaced aftward of the ball-striking surface by the transmittal portion, and comprises a front wall, an apex and a rear wall, wherein the front wall extends into a cavity defined by the golf club head and the rear wall extends into the cavity and the front wall and the rear wall are coupled at the apex, wherein a portion of the face comprises an outer layer forming a portion of the ball striking surface, a back layer and a chip insert, and at least one of the outer layer and back layer defines a recess and the chip insert is disposed in the recess, wherein a thickness of the sole rearward and immediately adjacent the rear wall of the flexure is less than 70% of the minimum thickness of the transmittal portion, and wherein the flexure is spaced from the ball-striking surface by a distance that is between 25% and 45% of the CG-Z-fc distance between the geometric face center of the golf club head and the center of gravity of the golf club head along a horizontal Z-axis that extends from the front to the aft of the golf club head. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification