Golf club head
A high forgiveness wood-type golf club head comprises a body and a face. The body comprises a sole that forms a bottom portion of the golf club head, a crown that forms a top portion of the golf club head and a skirt that forms a periphery of the golf club head between the sole and the crown. The face place is positioned at a front portion of the golf club head opposite a rear portion of the golf club head. The body defines an outer periphery having a generally triangular shape in plan.
1. A golf club head comprising:
a body comprising a sole positioned at a bottom portion of the golf club head, a crown positioned at a top portion, and a skirt positioned around a periphery between the sole and the crown wherein the body has a forward portion and a rearward portion; and
a face positioned at the forward portion of the body, the face having a geometric center, wherein a face plane is defined to extend tangential to the geometric center, and a principal axis extends from the geometric center and is normal to the face plane;
wherein the body extends a distance L transversely away from the face plane and measured along the principal axis, and defines cross-sectional areas A along planes parallel to the face plane and spaced rearward from the face plane by a distance q measured along the principal axis, wherein from a dimension of q/L of 0.60 to a dimension of q/L of 0.70 at least one of the cross-sectional areas A is between an upper cross-sectional area limit Au and a lower cross-sectional area limit Al, where
Au= 5512( q/L ) 2 −14026( q/L )+8875+1200( q/L )+500, and (1)
Al= 5512( q/L ) 2 −14026( q/L )+8875−2000[1−( q/L )] 2 −300; (2)
wherein within a first bounded region at least two of the cross-sectional areas A are between the upper cross-sectional area limit Au and the lower cross-sectional area limit Al, and the first bounded region extends from a dimension of q/L of 0.70 to a dimension of q/L of 0.80;
wherein within a second bounded region at least two of the cross-sectional areas A are between the upper cross-sectional area limit Au and the lower cross-sectional area limit Al, and the second bounded region extends from a dimension of q/L of 0.20 to a dimension of q/L of 0.30;
wherein the distance L is between approximately 100 mm and approximately 170 mm;
wherein the golf club head has a head origin defined as a position on the face plane at the geometric center, the head origin including an x-axis tangential to the face and generally parallel to the ground when the head is at an address position where a positive x-axis extends towards the heel portion, a y-axis extending perpendicular to the x-axis and generally parallel to the ground when the head is at the address position where a positive y-axis extends from the face and through the rearward portion of the body, and a z-axis extending perpendicular to the ground, to the x-axis and to the y-axis when the head is at the address position where a positive z-axis extends from the origin and generally upward;
wherein the golf club head has a center of gravity with:
an x-axis coordinate between approximately −5 mm and approximately 10 mm;
a y-axis coordinate between approximately 20 mm and approximately 50 mm;
a z-axis coordinate between approximately −10 mm and approximately 5 mm;
wherein the golf club head has a moment of inertia about a head center of gravity x-axis of at least approximately 300 kg·mm 2 and a moment of inertia about a head center of gravity z-axis of at least approximately 450 kg·mm 2 ;
wherein the golf club head has a volume between approximately 350 cm 3 and approximately 500 cm 3 ; and
wherein the golf club head has a width between approximately 100 mm and approximately 170 mm.
2. The golf club head of claim 1 , wherein the moment of inertia about the head center of gravity x-axis is at least approximately 310 kg·mm 2 , the moment of inertia about the head center of gravity z-axis is at least approximately 495 kg·mm 2 , the center of gravity x-axis coordinate is between approximately −2 mm and approximately 7 mm, and the center of gravity z-axis coordinate is between approximately −7 mm and approximately 2 mm.
3. The golf club head of claim 2 , wherein the moment of inertia about the head center of gravity x-axis is at least approximately 350 kg·mm 2 , the moment of inertia about the head center of gravity z-axis is at least approximately 525 kg·mm 2 , and the center of gravity z-axis coordinate is between approximately −6 mm and approximately 0 mm.
4. The golf club head of claim 3 , wherein the moment of inertia about the head center of gravity x-axis is at least approximately 370 kg·mm 2 , the moment of inertia about the head center of gravity z-axis is at least approximately 540 kg·mm 2 , and the center of gravity y-axis coordinate is between approximately 40 mm and approximately 50 mm.
5. The golf club head of claim 4 , wherein the center of gravity z-axis coordinate is between approximately −4 mm and approximately −2 mm.
6. The golf club head of claim 4 , wherein within the first bounded region all of the cross-sectional areas A are between the upper cross-sectional area limit Au and the lower cross-sectional area limit Al.
7. The golf club head of claim 6 , wherein within the second bounded region all of the cross-sectional areas A are between the upper cross-sectional area limit Au and the lower cross-sectional area limit Al.
8. The golf club head of claim 7 , wherein the second bounded region extends from a dimension of q/L of 0.10 to a dimension of q/L of 0.30.
9. The golf club head of claim 6 , wherein a cross-sectional area A at a dimension of q/L of 0.20 is greater than a cross-sectional area A at a dimension of q/L of 0.30.
10. The golf club head of claim 6 , wherein the golf club head has a maximum depth (Dch) of at least about 118 mm.
11. The golf club head of claim 10 , wherein the maximum width (Wch) is at least about 118 mm.
12. The golf club head of claim 6 , wherein at least a portion of the sole, a portion of the face, or a portion of the crown are formed of a composite material.
13. A golf club head comprising:
a body comprising a sole positioned at a bottom portion of the golf club head, a crown positioned at a top portion, and a skirt positioned around a periphery between the sole and the crown wherein the body has a forward portion and a rearward portion; and
a face positioned at the forward portion of the body, the face having a geometric center, wherein a face plane is defined to extend tangential to the geometric center, and a principal axis extends from the geometric center and is normal to the face plane;
wherein the body extends a distance L transversely away from the face plane and measured along the principal axis, and defines cross-sectional areas A along planes parallel to the face plane and spaced rearward from the face plane by a distance q measured along the principal axis, wherein:
within a first region having a dimension of q/L of 0.65 to a dimension of q/L of 0.69 at least one of the cross-sectional areas A is between an upper cross-sectional area limit Au and a lower cross-sectional area limit Al;
within a second region having a dimension of q/L of 0.70 to a dimension of q/L of 0.74 at least one of the cross-sectional areas A is between the upper cross-sectional area limit Au and the lower cross-sectional area limit Al;
within a third region having a dimension of q/L of 0.75 to a dimension of q/L of 0.79 at least one of the cross-sectional areas A is between the upper cross-sectional area limit Au and the lower cross-sectional area limit Al;
within a fourth region having a dimension of q/L of 0.80 to a dimension of q/L of 0.84 at least one of the cross-sectional areas A is between the upper cross-sectional area limit Au and the lower cross-sectional area limit Al;
within a fifth region having a dimension of q/L of 0.85 to a dimension of q/L of 0.89 at least one of the cross-sectional areas A is between the upper cross-sectional area limit Au and the lower cross-sectional area limit Al;
within a sixth region having a dimension of q/L of 0.90 to a dimension of q/L of 0.94 at least one of the cross-sectional areas A is between the upper cross-sectional area limit Au and the lower cross-sectional area limit Al;
where:
Au= 5512( q/L ) 2 −14026( q/L )+8875+1200( q/L )+500, and (1)
Al= 5512( q/L ) 2 −14026( q/L )+8875−2000[1−( q/L )] 2 −300; (2)
wherein the distance L is between approximately 100 mm and approximately 170 mm;
wherein the golf club head has a head origin defined as a position on the face plane at the geometric center, the head origin including an x-axis tangential to the face and generally parallel to the ground when the head is at an address position where a positive x-axis extends towards the heel portion, a y-axis extending perpendicular to the x-axis and generally parallel to the ground when the head is at the address position where a positive y-axis extends from the face and through the rearward portion of the body, and a z-axis extending perpendicular to the ground, to the x-axis and to the y-axis when the head is at the address position where a positive z-axis extends from the origin and generally upward;
wherein the golf club head has a center of gravity with:
an x-axis coordinate between approximately −5 mm and approximately 10 mm;
a y-axis coordinate between approximately 20 mm and approximately 50 mm;
a z-axis coordinate between approximately −10 mm and approximately 5 mm;
wherein the golf club head has a moment of inertia about a head center of gravity x-axis of at least approximately 300 kg·mm 2 and a moment of inertia about a head center of gravity z-axis of at least approximately 450 kg·mm 2 ;
wherein the golf club head has a volume between approximately 350 cm 3 and approximately 500 cm 3 ; and
wherein the golf club head has a width between approximately 100 mm and approximately 170 mm.
14. The golf club head of claim 13 , wherein the moment of inertia about the head center of gravity x-axis is at least approximately 310 kg·mm 2 , the moment of inertia about the head center of gravity z-axis is at least approximately 495 kg·mm 2 , the center of gravity x-axis coordinate is between approximately −2 mm and approximately 7 mm, and the center of gravity z-axis coordinate is between approximately −7 mm and approximately 2 mm.
15. The golf club head of claim 14 , wherein the moment of inertia about the head center of gravity x-axis is at least approximately 350 kg·mm 2 , the moment of inertia about the head center of gravity z-axis is at least approximately 525 kg·mm 2 , and the center of gravity z-axis coordinate is between approximately −6 mm and approximately 0 mm.
16. The golf club head of claim 15 , wherein the moment of inertia about the head center of gravity x-axis is at least approximately 370 kg·mm 2 , the moment of inertia about the head center of gravity z-axis is at least approximately 540 kg·mm 2 , and the center of gravity y-axis coordinate is between approximately 40 mm and approximately 50 mm.
17. The golf club head of claim 16 , wherein the center of gravity z-axis coordinate is between approximately −4 mm and approximately −2 mm.
18. A golf club head comprising:
a body comprising a sole positioned at a bottom portion of the golf club head, a crown positioned at a top portion, and a skirt positioned around a periphery between the sole and the crown wherein the body has a forward portion and a rearward portion; and
a face positioned at the forward portion of the body, the face having a geometric center, wherein a face plane is defined to extend tangential to the geometric center, and a principal axis extends from the geometric center and is normal to the face plane;
wherein the body extends a distance L transversely away from the face plane and measured along the principal axis, and a plurality of planes parallel to the face plane and spaced rearward from the face plane by a distance q measured along the principal axis define a plurality of cross-sectional areas A with each of the plurality of planes having a cross-sectional area A, wherein:
the plurality of planes includes a set quantity of planes incrementally spaced apart along the principal axis from a dimension of q/L of 0.10 to a dimension of q/L of 0.90;
the set quantity of planes is at least seventeen; and
at least 50% of the cross-sectional areas A are between an upper cross-sectional area limit Au and a lower cross-sectional area limit Al;
where:
Au= 5512( q/L ) 2 −14026( q/L )+8875+1200( q/L )+500, and (1)
Al= 5512( q/L ) 2 −14026( q/L )+8875−2000[1−( q/L )] 2 −300; (2)
wherein the distance L is between approximately 100 mm and approximately 170 mm;
wherein the golf club head has a head origin defined as a position on the face plane at the geometric center, the head origin including an x-axis tangential to the face and generally parallel to the ground when the head is at an address position where a positive x-axis extends towards the heel portion, a y-axis extending perpendicular to the x-axis and generally parallel to the ground when the head is at the address position where a positive y-axis extends from the face and through the rearward portion of the body, and a z-axis extending perpendicular to the ground, to the x-axis and to the y-axis when the head is at the address position where a positive z-axis extends from the origin and generally upward;
wherein the golf club head has a center of gravity with:
an x-axis coordinate between approximately −5 mm and approximately 10 mm;
a y-axis coordinate between approximately 20 mm and approximately 50 mm;
a z-axis coordinate between approximately −10 mm and approximately 5 mm;
wherein the golf club head has a moment of inertia about a head center of gravity x-axis of at least approximately 300 kg·mm 2 and a moment of inertia about a head center of gravity z-axis of at least approximately 450 kg·mm 2 ;
wherein the golf club head has a volume between approximately 350 cm 3 and approximately 500 cm 3 ; and
wherein the golf club head has a width between approximately 100 mm and approximately 170 mm.
19. The golf club head of claim 18 , wherein the moment of inertia about the head center of gravity x-axis is at least approximately 310 kg·mm 2 , the moment of inertia about the head center of gravity z-axis is at least approximately 495 kg·mm 2 , the center of gravity x-axis coordinate is between approximately −2 mm and approximately 7 mm, and the center of gravity z-axis coordinate is between approximately −7 mm and approximately 2 mm.
20. A golf club head comprising:
a body comprising a sole positioned at a bottom portion of the golf club head, a crown positioned at a top portion, and a skirt positioned around a periphery between the sole and the crown wherein the body has a forward portion and a rearward portion; and
a face positioned at the forward portion of the body, the face having a geometric center, wherein a face plane is defined to extend tangential to the geometric center, and a principal axis extends from the geometric center and is normal to the face plane;
wherein the body extends a distance L transversely away from the face plane and measured along the principal axis, and a plurality of planes parallel to the face plane and spaced rearward from the face plane by a distance q measured along the principal axis define a plurality of cross-sectional areas A with each of the plurality of planes having a cross-sectional area A, wherein:
the plurality of planes includes a set quantity of planes incrementally spaced apart along the principal axis from a dimension of q/L of 0.10 to a dimension of q/L of 0.90;
within a first region having a dimension of q/L of 0.60 to a dimension of q/L of 0.90 all of the plurality of cross-sectional areas A are less than 4000 mm 2 and greater than a lower cross-sectional area limit Al;
within a second region having a dimension of q/L of 0.10 to a dimension of q/L of 0.5 at least four of the plurality of cross-sectional areas A are between the upper cross-sectional area limit Au and the lower cross-sectional area limit Al;
where:
Au= 5512( q/L ) 2 −14026( q/L )+8875+1200( q/L )+500, and (1)
Al= 5512( q/L ) 2 −14026( q/L )+8875−2000[1−( q/L )] 2 −300; (2)
wherein the distance L is between approximately 100 mm and approximately 170 mm;
wherein the golf club head has a head origin defined as a position on the face plane at the geometric center, the head origin including an x-axis tangential to the face and generally parallel to the ground when the head is at an address position where a positive x-axis extends towards the heel portion, a y-axis extending perpendicular to the x-axis and generally parallel to the ground when the head is at the address position where a positive y-axis extends from the face and through the rearward portion of the body, and a z-axis extending perpendicular to the ground, to the x-axis and to the y-axis when the head is at the address position where a positive z-axis extends from the origin and generally upward;
wherein the golf club head has a center of gravity with:
an x-axis coordinate between approximately −5 mm and approximately 10 mm;
a y-axis coordinate between approximately 20 mm and approximately 50 mm;
a z-axis coordinate between approximately −10 mm and approximately 5 mm;
wherein the golf club head has a moment of inertia about a head center of gravity x-axis of at least approximately 300 kg·mm 2 and a moment of inertia about a head center of gravity z-axis of at least approximately 450 kg·mm 2 ;
wherein the golf club head has a volume between approximately 350 cm 3 and approximately 500 cm 3 ; and
wherein the golf club head has a width between approximately 100 mm and approximately 170 mm.
21. The golf club head of claim 20 , wherein within the second region all of the plurality of cross-sectional areas A are greater than 4000 mm 2 .