Golf club head that optimizes products of inertia
First Claim
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1. A golf club head comprising:
- a body having a crown, a sole and a striking plate, the body having a hollow interior, wherein the golf club head has a moment of inertia, Izz, greater than 3000 g-cm2 and a moment of inertia, Iyy, greater than 1900 g-cm2, and each of the products of inertia, Ixy and Ixz, of the golf club head has an absolute value less than 100 g-cm2, and the product of inertia, Iyz, is greater than 0 g-cm2, wherein the moments of inertia and the products of inertia are defined by the vertical axis Z through the center of gravity of the golf club head, a horizontal axis Y through the center of gravity of the golf club head and substantially parallel to the striking plate, and a forward to rearward axis X through the center of gravity of the golf club head, the X axis, the Y axis and the Z axis are orthogonal to each other.
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Abstract
A golf club having products of inertia Ixy and Ixz with absolute values below 100 g-cm2 and a positive product of inertia Iyz is disclosed herein. The golf club has a large volume, a high moment of inertia, or both. Preferably, the moment of inertia, Izz, of the golf club head about a vertical axis Z through the center of gravity ranges from 3000 g-cm2 to 5000 g-cm2, and a moment of inertia, Iyy, about a horizontal axis Y through the center of gravity of the golf club head is greater than 1900 g-cm2. The golf club head may be composed of plies of pre-preg sheets. The volume of the golf club head preferably ranges from 300 cm3 to 600 cm3.
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Citations
17 Claims
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1. A golf club head comprising:
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a body having a crown, a sole and a striking plate, the body having a hollow interior, wherein the golf club head has a moment of inertia, Izz, greater than 3000 g-cm2 and a moment of inertia, Iyy, greater than 1900 g-cm2, and each of the products of inertia, Ixy and Ixz, of the golf club head has an absolute value less than 100 g-cm2, and the product of inertia, Iyz, is greater than 0 g-cm2, wherein the moments of inertia and the products of inertia are defined by the vertical axis Z through the center of gravity of the golf club head, a horizontal axis Y through the center of gravity of the golf club head and substantially parallel to the striking plate, and a forward to rearward axis X through the center of gravity of the golf club head, the X axis, the Y axis and the Z axis are orthogonal to each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A golf club head comprising:
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a body having a crown, a sole, a ribbon and a striking plate, the body having a hollow interior, the body composed of a material selected from the group consisting of titanium, titanium alloy, steel, stainless steel, and amorphous metals; and
at least one weight member disposed within the hollow interior of the body along the ribbon, wherein the golf club head has a volume ranging from 300 cm3 to 600 cm3, a moment of inertia, Izz, that ranges from 3000 g-cm2 to 5000 g-cm2, and a moment of inertia, Iyy, of at least 1900 g-cm2, and each of the products of inertia, Ixy and Ixz, of the golf club head has an absolute value less than 100 g-cm2, and the product of inertia, Iyz, of the golf club head ranges from 0 g-cm2 to 300 g-cm2, wherein the moments of inertia and the products of inertia are defined by the vertical axis Z through the center of gravity of the golf club head, a horizontal axis Y through the center of gravity of the golf club head and substantially parallel to the striking plate, and a forward to rearward axis X through the center of gravity of the golf club head, the X axis, the Y axis and the Z axis are orthogonal to each other. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification