Golf club head
AssigneeTaylor Made Golf Company, Inc.
InventorsMark Vincent Greaney, Brandon Woolley, Ian Wright, Todd P. Beach
Life of this patent
Estimating the term…
Abstract
A golf club head with an increased moment of inertia (MOI) about the X axis and the Z axis. Generally, the MOI about the Z axis is at least about 4400 g·cm2 and the MOI about the X axis is at least about 2500 g·cm2. The radius of the bulge of the club face is increased while the radius of the roll is reduced to compensate for the gear effect produced by the increased MOIs. The bulge curvature is generally between about 0.016 cm−1 and about 0.028 cm−1, and the roll curvature is between about 0.033 cm−1 and about 0.066 cm−1. The roll curvature is greater than the bulge curvature.
Claims20
A golf club head comprising:
- a club head body having an external surface with a heel portion, a toe portion, a crown, a sole, and a face;
- and
- a moment of inertia about the CG Z axis, Izz, which is at least about 4400 g·cm2;
- wherein the face includes:
- a bulge curvature;
- a roll curvature;
- and
- wherein the bulge curvature is greater than 0 cm−1 and less than about 0.027 cm−1 and the inverse of the bulge curvature is greater than the inverse of the roll curvature by at least 7.62 cm.
A golf club head comprising:
- a club head body having an external surface with a heel portion, a toe portion, a crown, a sole, and a face;
- a moment of inertia about the CG Z axis, Izz, which is at least about 4400 g·cm2;
- and
- a moment of inertia about the CG X axis, Ixx, which is at least about 2500 g·cm2 and wherein Izz is greater than Ixx;
- wherein the face includes a bulge curvature and a roll curvature;
- and
- wherein a ratio of bulge curvature divided by roll curvature, RC, satisfies the following:
- 1
- 3.3
- ×
- 10
- -
- 4
- ×
- I
- zz
- +
- 0.9154
- ≤
- R
- c
- ≤
- 1
- 1.7
- ×
- 10
- -
- 4
- ×
- I
- zz
- +
- 0.4574
- .
A golf club comprising:
- a shaft with a golf club head coupled thereto;
- the club head body comprising:
- an external surface with a heel portion, a toe portion, a crown, a sole, and a face;
- a moment of inertia about the CG Z axis, Izz, which is at least about 4400 g·cm2;
- and
- a moment of inertia about the CG X axis, Ixx, which is at least about 2500 g·cm2 and wherein Izz is greater than Ixx;
- wherein the face includes a bulge curvature and a roll curvature;
- and
- wherein the ratio of the bulge curvature divided by the roll curvature, RC, satisfies the following:
- 1
- (
- 5.6
- ×
- 10
- -
- 4
- ⋆
- I
- ZZ
- )
- +
- 0.222
- ≤
- R
- C
- ≤
- 1
- (
- 2.8
- ×
- 10
- -
- 4
- ⋆
- I
- ZZ
- )
- +
- 0.111
- .
Dependencies are inferred from the claim text.