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US 2022/0054905 A1Published application
Golf club head with improved inertia performance
AssigneeAcushnet Company
InventorsThomas Orrin Bennett, Stephen S. Murphy, Peter L. Soracco, Charles E. Golden
Life of this patent
Estimating the term…
Abstract
A golf club head that is capable improving on the inertia properties of a golf club head all while also improving the Center of Gravity (CG) location is disclosed herein. More specifically, the golf club head in accordance with the present invention achieves a relative low Moment of Inertia (MOI) about the Z-axis (MOI-Z) as well as a relatively low MOI about the Shaft-axis (MOI-SA).
Claims12
A golf club comprised of a golf club head, a shaft having a shaft axis coupled to the golf club head at a first end of the shaft and a grip coupled to the shaft at a second end of the shaft, wherein the golf club head comprises:
- a frontal portion comprised of titanium comprising a striking face having a face center located at a forward portion of said golf club head, a crown return and a sole return;
- a rear portion located aft of said striking face comprising a crown at an upper portion of said golf club head being coupled to the crown return and a sole portion on a bottom portion of said golf club head being coupled to the sole return;
- an x-axis is defined as a horizontal axis tangent to said face center with a positive x direction towards a heel of said golf club head, a y-axis is a vertical axis orthogonal to said x-axis with a positive y direction towards said crown of said golf club head, and a z-axis being orthogonal to both said x-axis and said y-axis with a positive z direction extending forward,
- wherein said golf club head has a moment of inertia about said y-axis (MOI-Y) passing through a center of gravity (CG) of said golf club head, said golf club head has a moment of inertia about said z-axis (MOI-Z) passing through said CG, said golf club head has a moment of inertia about said x-axis (MOI-X) passing through said CG and said golf club has a moment of inertia about the shaft axis (MOI-SA);
- a first weighting member and a second weighting member, both being located near a central portion of said golf club head in a heel-to-toe orientation, substantially in line with a vertical plane containing the z-axis with said face center, the first weighting member located on the sole return and the second weighting member being located near a back edge of the golf club head;
- wherein said first weighting member and said second weighting member each have a heavy side and a light side and are rotatable to move the CG along a direction parallel to the x-axis;
- wherein said golf club head has a MOI-Y to MOI-Z ratio of greater than about 1.5;
- and
- wherein said golf club head has a MOI-SA of less than 850 kg-mm2.
6 more elements
A golf club comprised of a golf club head, a shaft having a shaft axis coupled to the golf club head at a first end of the shaft and a grip coupled to the shaft at a second end of the shaft, wherein the golf club head comprises:
- a frontal portion comprised of titanium comprising a striking face having a face center located at a forward portion of said golf club head, a crown return and a sole return;
- a rear portion located aft of said striking face comprising a crown at an upper portion of said golf club head and a sole portion on a bottom portion of said golf club head;
- an x-axis is defined as a horizontal axis tangent to said face center with a positive x direction towards a heel of said golf club head, a y-axis is a vertical axis orthogonal to said x-axis with a positive y direction towards said crown of said golf club head, and a z-axis being orthogonal to both said x-axis and said y-axis with a positive z direction extending forward,
- wherein said golf club head has a moment of inertia about said y-axis (MOI-Y) passing through a center of gravity (CG) of said golf club head, said golf club head has a moment of inertia about said z-axis (MOI-Z) passing through said CG, said golf club head has a moment of inertia about said x-axis (MOI-X) passing through said CG and said golf club has a moment of inertia about the shaft axis (MOI-SA);
- a first weighting member and a second weighting member, both being located near a central portion of said golf club head in a heel-to-toe orientation, substantially in line with a vertical plane containing the z-axis with said face center, the first weighting member located on the sole return and the second weighting member being located near a back edge of the golf club head;
- wherein said first weighting member and said second weighting member each have a heavy side and a light side and are rotatable to move the CG along a direction parallel to the x-axis;
- wherein the first weighting member is secured to the golf club head by a first fastener that extends substantially in the y direction and a second weighting member is coupled to the golf club head by a second fastener that extends substantially in the z direction;
- and
- wherein said MOI-SA is less than 850 kg-mm2.
6 more elements
Dependencies are inferred from the claim text.