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 face includes a face insert that forms at least a portion of the ball-striking surface, wherein the face insert is constructed of maraging steel and has a thickness less than 2.0 mm,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 the flexure is spaced from the ball-striking surface by a distance that is between 20% and 50% of a 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 face 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 flexure provides compliance during an impact between the golf club head and a golf ball, and is tuned to vibrate, immediately after impact, at a predetermined frequency. A slot is included in a portion of the golf club head and works with the flexure to further tune performance.
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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 face includes a face insert that forms at least a portion of the ball-striking surface, wherein the face insert is constructed of maraging steel and has a thickness less than 2.0 mm, 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 the flexure is spaced from the ball-striking surface by a distance that is between 20% and 50% of a 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 face to the aft of the golf club head. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. 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, wherein the flexure is defined by a front wall that is spaced from a rear wall to define a cavity, wherein each of the front wall and the rear wall extend from the sole toward an interior of the golf club head; a side wall extending between the crown and the sole; a hosel extending from the crown and including a shaft bore; a face defining a front ball-striking surface and a back surface, the face intersecting the transmittal portion at a leading edge; and a filler member at least partially filling the cavity defined between the front wall and the rear wall of the flexure, wherein the golf club head defines an origin at a location on a shaft axis defined by the shaft bore in a plane defined by the proximal end of the hosel, an x-axis extending from the origin in a heel to toe direction and parallel to a plane that is tangent to the face at a geometric face center of the ball-striking surface, a y-axis extending vertically through the origin and perpendicular to a ground plane when the golf club head is in an address position on the ground plane, and a z-axis extending in a face to aft direction parallel to the ground plane when the golf club head is in an address position, wherein the transmittal portion of the sole defines a first positive angled bounce surface between the face and the flexure of the golf club head, and wherein the rear portion of the sole defines a second positive angled bounce surface between the flexure and a rear end of the golf club head. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A golf club head, comprising:
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a crown defining an upper surface of the golf club head, wherein the crown comprises a portion having constant thickness of between about 0.3 mm to about 0.4 mm; a sole defining a lower surface of the golf club head; a side wall extending between the crown and sole; a hosel extending from the crown and including a shaft bore; a face defining a ball-striking surface and intersecting the lower surface at a leading edge, wherein a perimeter of the face is coupled to the crown and the sole; and an elongate flexure is recessed into the sole and defined by a first portion and a second portion, wherein the length of the first portion is different than the length of the second portion so that the flexure has a generally sharktooth cross-sectional shape, wherein the first portion extends from the sole toward the interior of the golf club head and the second portion extends from the sole toward the interior of the golf club head, wherein the first portion interfaces the second portion at an apex, and wherein the flexure extends across the body in a generally heel-to-toe direction within about 5.0 mm to about 20.0 mm from the leading edge of the golf club head and intersects at least a portion of the side wall of the golf club head. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification