Golf club head
AssigneeAcushnet Company
InventorsRichard L. Cleghorn, Grant M. Martens, Thomas Orrin Bennett, Mitchell E. Bac
Life of this patent
Estimating the term…
Abstract
A golf club head formed of an alloy of steel that is capable of improving the center of gravity (CG) location while maintaining traditional external dimensions of the golf club head. More specifically, the golf club head in accordance with the present invention achieves a relatively low CG while maintaining traditional external dimensions by reducing the amount of mass contributed by the crown, the striking face, and the hosel, and strategically reallocating this mass within and/or proximate the sole of the golf club head.
Claims20
A golf club head comprising:
- a striking face, having a face center, a crown, a sole opposite said crown, a heel, a toe opposite said heel, and a hosel adjacent said heel and configured to join said golf club head to a shaft,
- wherein said striking face further comprises;
- a variable face thickness profile having a substantially planar front surface and a non-planar rear surface,
- a sole return located at a bottom of said striking face,
- wherein an X-axis is defined as a horizontal axis tangent to said face center of said striking face with a positive direction towards said heel of said golf club head, a Y-axis is a vertical axis orthogonal to said X-axis with a positive 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 direction towards a front of said golf club head, wherein an origin of said X-axis, said Y-axis, and said Z-axis is centered at a center of gravity (CG) of said golf club head, and
- wherein said variable face thickness profile of said striking face further comprises;
- a crown biased thickened central portion,
- an upper transition portion having an upper transition slope, and
- a lower transition portion having a lower transition slope,
- wherein said upper transition slope is greater than said lower transition slope.
A golf club head comprising:
- a striking face, having a face center, a crown, a sole opposite said crown, a heel, a toe opposite said heel, and a hosel adjacent said heel and configured to join said golf club head to a shaft,
- wherein said striking face further comprises;
- a variable face thickness profile having a substantially planar front surface and a non-planar rear surface,
- wherein an X-axis is defined as a horizontal axis tangent to said face center of said striking face with a positive direction towards said heel of said golf club head, a Y-axis is a vertical axis orthogonal to said X-axis with a positive 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 direction towards a front of said golf club head, wherein an origin of said X-axis, said Y-axis, and said Z-axis is centered at a center of gravity (CG) of said golf club head, and
- wherein said variable face thickness profile of said striking face further comprises;
- a crown biased thickened central portion having an elliptical shape,
- wherein said elliptical shape has an aspect ratio of greater than about 5.
A golf club head comprising:
- a striking face, having a face center, a crown, a sole opposite said crown, a heel, a toe opposite said heel, and a hosel adjacent said heel and configured to join said golf club head to a shaft,
- wherein said striking face further comprises;
- a variable face thickness profile having a substantially planar front surface and a non-planar rear surface,
- wherein an X-axis is defined as a horizontal axis tangent to said face center of said striking face with a positive direction towards said heel of said golf club head, a Y-axis is a vertical axis orthogonal to said X-axis with a positive 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 direction towards a front of said golf club head, wherein an origin of said X-axis, said Y-axis, and said Z-axis is centered at a center of gravity (CG) of said golf club head, and
- wherein said variable face thickness profile of said striking face further comprises;
- a crown biased thickened central portion,
- an upper transition portion having an upper transition slope, and
- a lower transition portion having a lower transition slope,
- wherein said upper transition slope is greater than said lower transition slope, and
- wherein a ratio of said upper transition slope over said lower transition slope is greater than about 1.14.
Dependencies are inferred from the claim text.