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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0144105 (2013-12-30) |
등록번호 | US-9861864 (2018-01-09) |
발명자 / 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 | 피인용 횟수 : 1 인용 특허 : 421 |
A golf club head includes a club body including a crown, a sole, a skirt disposed between and connecting the crown and the sole and a face portion connected to a front end of the club body. The face portion includes a geometric center defining the origin of a coordinate system when the golf club hea
A golf club head includes a club body including a crown, a sole, a skirt disposed between and connecting the crown and the sole and a face portion connected to a front end of the club body. The face portion includes a geometric center defining the origin of a coordinate system when the golf club head is ideally positioned, the coordinate system including an x-axis being tangent to the face portion at the origin and parallel to a ground plane, a y-axis intersecting the origin being parallel to the ground plane and orthogonal to the x-axis, and a z-axis intersecting the origin being orthogonal to both the x-axis and the y-axis. The golf club head defines a center of gravity CG, the CG being a distance CGY from the origin as measured along the y-axis and a distance CGZ from the origin as measured along the z-axis.
1. A golf club head comprising: a club body including a leading edge, a trailing edge, a crown, a sole, and a skirt disposed between and connecting the crown and the sole;an adjustable head-shaft connection assembly coupled to the club body and operable to adjust at least one of a loft angle or a li
1. A golf club head comprising: a club body including a leading edge, a trailing edge, a crown, a sole, and a skirt disposed between and connecting the crown and the sole;an adjustable head-shaft connection assembly coupled to the club body and operable to adjust at least one of a loft angle or a lie angle of a golf club formed when the golf club head is attached to a golf club shaft via the head-shaft connection assembly;at least one external mass element that is adjustably attachable to the club body; anda face portion connected to a front end of the club body, the face portion including a geometric center defining the origin of a coordinate system when the golf club head is ideally positioned, the coordinate system including: an x-axis being tangent to the face portion at the origin and parallel to a ground plane,a y-axis intersecting the origin being parallel to the ground plane and orthogonal to the x-axis, anda z-axis intersecting the origin being orthogonal to both the x-axis and the y-axis;the golf club head defining a center of gravity (CG), the CG being a distance CGY from the origin as measured along the y-axis and a distance CGZ from the origin as measured along the z-axis;wherein the golf club head has a crown height to face height ratio of at least 1.12 andwherein the golf club head has a moment of inertia (IXX) about a CG x-axis, the CG x-axis being parallel to the x-axis and passing through the CG of the golf club head, wherein a ratio of CGZ/CGY satisfies the inequality: CGZ/CGY<0.000222×IXX−0.272;wherein there is a face-to-crown transition where the face connects to the crown near the front end of the club body and a skirt-to-crown transition where the skirt connects to the crown;wherein in a y-z plane passing through the origin the crown height continuously increases starting from the face-to-crown transition up to a local maximum;wherein in a y-z plane passing through the origin at a distance CGY from the origin the crown height is greater than the face height;wherein in a y-z plane passing through the origin the skirt-to-crown transition proximate the trailing edge is lower than the origin;wherein a CG effectiveness product (CGeff) for the golf club head is defined as CGeff=CGY×Δz;and the CGeff is at least 806 mm2. 2. The golf club head of claim 1, wherein the distance CGZ is not greater than −7.0. 3. The golf club head of claim 1, wherein the crown portion is convex at all locations. 4. The golf club head of claim 1, further comprising at least one mass element connected to the body portion of the golf club head. 5. The golf club head of claim 1, wherein the CG is located a distance ΔZ from a ground plane, the ground plane being defined as a plane in contact with the sole of the golf club head in ideal address position, wherein ΔZ is at most 24.6 mm, the CGZ/CGY ratio is less than −0.25, and IXX is at least 200 kg·mm2. 6. The golf club head of claim 5, wherein the CGeff is less than 1031 mm2. 7. The golf club head of claim 1, wherein at least a portion of the sole located rearward of the CG is substantially flat. 8. The golf club head of claim 1, wherein a volume of the golf club head is at least 430 cc. 9. The golf club head of claim 1, wherein the distance CGZ is not greater than −7.0, and Δz is no greater than 24.6 mm. 10. A golf club head comprising: a club body including a leading edge, a trailing edge, a crown, a sole, and a skirt disposed between and connecting the crown and the sole; anda face portion connected to a front end of the club body, the face portion including a geometric center defining the origin of a coordinate system when the golf club head is ideally positioned, the coordinate system including an x-axis being tangent to the face portion at the origin and parallel to a ground plane,a y-axis intersecting the origin being parallel to the ground plane and orthogonal to the x-axis, anda z-axis intersecting the origin being orthogonal to both the x-axis and the y-axis;the golf club head defining a center of gravity CG (CG), the CG being a distance CGY from the origin as measured along the y-axis and a distance CGZ from the origin as measured along the z-axis that is not greater than −7.0, wherein the CG is located a distance ΔZ from a ground plane that is no more than 24.6 mm, the ground plane being defined as a plane in contact with the sole of the golf club head in ideal address position; andwherein the golf club head has a moment of inertia (IXX) about a CG x-axis that is at least 200 kg·mm2, the CG x-axis being parallel to the x-axis and passing through the CG of the golf club head, wherein a ratio of CGZ/CGY is less than −0.25 and satisfies the inequality CGZ/CGY<0.000222×IXX−0.272; andwherein a CG effectiveness product (CGeff) for the golf club head is defined as CGeff=CGY×Δz and the CGeff is 806-1031 mm2. 11. The golf club head of claim 10, wherein the golf club head includes a face-to-crown transition where the face connects to the crown near the front end of the club body and a skirt-to-crown transition where the skirt connects to the crown, wherein in a y-z plane passing through the origin the crown height continuously increases starting from the face-to-crown transition up to a local maximum, wherein in a y-z plane passing through the origin at a distance CGy from the origin the crown height is greater than the face height, and wherein in a y-z plane passing through the origin the skirt-to-crown transition proximate the trailing edge is lower than the origin. 12. The golf club head of claim 11, wherein the golf club head has a crown height to face height ratio of at least 1.12.
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