Golf club head with center of gravity adjustability that optimizes products of inertia
First Claim
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1. A wood-type golf club head comprising:
- a body comprising a face, a hosel, a rear portion, and a metal sole;
a crown composed of a carbon material;
a hollow tube composed of a carbon material; and
a cartridge comprising a first material having a first specific gravity and a second material having a second specific gravity that is greater than the value of the first specific gravity;
wherein the tube is disposed within a hollow interior of the golf club head and extends from the crown to the sole;
wherein the cartridge is sized to fit within the tube;
wherein changing the orientation of the cartridge within the tube changes the location of the golf club head'"'"'s center of gravity along a vertical Z axis;
wherein the products of inertia (Ixz and Iyz) of the golf club head have an absolute value below 100 g-cm2.
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Abstract
The present invention comprises a golf club head comprising a body having a crown, a sole, a front wall and a hosel, wherein the body defines a hollow interior. The golf club head further comprises a center of gravity height adjustment assembly wherein the center of gravity height adjustment assembly is positioned within the hollow interior of the body. The products of inertia (Ixz and Iyz) of the golf club head have an absolute value below 100 g-cm2.
30 Citations
20 Claims
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1. A wood-type golf club head comprising:
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a body comprising a face, a hosel, a rear portion, and a metal sole; a crown composed of a carbon material; a hollow tube composed of a carbon material; and a cartridge comprising a first material having a first specific gravity and a second material having a second specific gravity that is greater than the value of the first specific gravity; wherein the tube is disposed within a hollow interior of the golf club head and extends from the crown to the sole; wherein the cartridge is sized to fit within the tube; wherein changing the orientation of the cartridge within the tube changes the location of the golf club head'"'"'s center of gravity along a vertical Z axis; wherein the products of inertia (Ixz and Iyz) of the golf club head have an absolute value below 100 g-cm2. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A driver-type golf club head comprising
a body composed of a titanium alloy comprising a face, a hosel, a rear portion, and a sole; -
a crown composed of a carbon material; a hollow tube composed of a carbon material; and a cartridge comprising a polymer and a slug composed of a material having a specific gravity that is greater than that of the polymer; wherein the tube is disposed within a hollow interior of the golf club head proximate the face and extends from the crown to the sole; wherein the cartridge is sized to fit within the tube; wherein reversing the orientation of the cartridge within the tube changes the location of the golf club head'"'"'s center of gravity by no less than 0.050 inch and no more than 0.100 inch along a vertical Z axis; and wherein the products of inertia (Ixz and Iyz) of the golf club head have an absolute value below 100 g-cm2. - View Dependent Claims (15, 16, 17)
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18. A golf club head comprising:
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hollow body comprising a face, a hosel, a rear portion, a crown and a sole, a tube; and a cartridge comprising a low specific gravity material and a high specific gravity material, wherein the tube is disposed within the hollow interior of the golf club head and extends from the crown to the sole, wherein the golf club head has a mass M, wherein the cartridge has a length L and a mass MT, wherein the cartridge is sized to fit within the tube, wherein the distance from the midpoint of the length L to a center of gravity of the cartridge when the cartridge is disposed within the tube is such that the high specific gravity material is closer to the sole is defined as ½
D,wherein the golf club head satisfies the equation D≧
0.065(1+M/MT);wherein the products of inertia (Ixz and Iyz) of the golf club head have an absolute value below 100 g-cm2. - View Dependent Claims (19, 20)
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Specification