Golf club head that optimizes products of inertia
AssigneeCallaway Golf Company
InventorsMatthew T. Cackett, D. Clayton Evans, Frank H. Fan, Alan Hocknell, Richard C. Helmstetter
Life of this patent
Estimating the term…
Abstract
A golf club having products of inertia Ixy, Ixz, and Iyz with absolute values below 100 g-cm2 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 ranges from 1900 g-cm2 to 2050 g-cm2. Preferably, the golf club head is composed of plies of pre-preg sheets. The volume of the golf club head preferably varies form 300 g-cm2 to 600 g-cm2.
Claims15
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 volume of at least 325 cm3, a moment of inertia, Izz, that ranges from 3500 g-cm2 to 5000 g-cm2, and a moment of inertia, Iyy, that ranges from 1900 g-cm2 to 2050 g-cm2, and each of the products of inertia, Ixy, Ixz and Iyz, of the golf club head has an absolute value less than 100 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.
A golf club head comprising:
- 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 of at least 325 cm3, a moment of inertia, Izz, that ranges from 3500 g-cm2 to 5000 g-cm2, and a moment of inertia, Iyy, that ranges from 1900 g-cm2 to 2050 g-cm2, and each of the products of inertia, Ixy, Ixz and Iyz, of the golf club head has an absolute value less than 100 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.
Dependencies are inferred from the claim text.