US2024359065A1PendingUtilityA1
Club head having balanced impact and swing performance characteristics
Est. expiryMay 15, 2039(~12.8 yrs left)· nominal 20-yr term from priority
A63B 53/0445A63B 53/0437A63B 53/0408A63B 2053/0491A63B 60/02A63B 2102/32A63B 2209/10A63B 2209/02A63B 2209/00A63B 60/52A63B 60/006A63B 60/002A63B 53/0466A63B 53/0462
76
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Claims
Abstract
Described herein are embodiments of golf club heads having a balance of the following parameters: a low and back club head center of gravity position, a high moment of inertia, a large Ixy product of inertia, and low aerodynamic drag. Methods of manufacturing the embodiments of golf club heads having a balance of club head center of gravity position, moment of inertia, product of inertia, and aerodynamic drag are also described herein.
Claims
exact text as granted — not AI-modified1 . A hollow body golf club head comprising:
a body having a front end, a back end opposite the front end, a crown, a sole opposite the crown, a heel, a toe opposite the heel, a skirt adjoining the crown and the sole, and a hosel structure having a hosel axis extending centrally through a bore in the hosel structure; a strikeface positioned at the front end and defining a geometric center, a loft plane tangent to the geometric center, and a head depth plane extending through the geometric center from the heel to the toe, perpendicular to the loft plane; wherein:
the strikeface comprises a first material, the body comprises a second material;
a loft angle of the club head is less than 16 degrees;
a volume of the club head is greater than 400 cc;
a head center of gravity of the club head is located at a head CG depth from the loft plane, measured in a direction perpendicular to the loft plane, and a head CG height from a head depth plane, measured in a direction perpendicular to the head depth plane;
the head CG height is less than 0.20 inches; a y-axis extending through the head center of gravity from the crown to the sole; an x-axis extending through the head center of gravity from the heel to the toe, wherein the x-axis is perpendicular to the y-axis; the club head experiences a drag force F d when subjected to an air speed of 102 mph in a direction perpendicular to a plane extending through the geometric center of the strikeface, parallel to the hosel axis, and positioned at the loft angle from the loft plane; the club head has a crown to sole moment of inertia Iyy, and a heel to toe moment of inertia Ixx, and a product of inertia Ixy about the x-axis and y-axis; wherein the product of inertia is at greater than 100 g·cm 2 . the club head satisfies relation A and relation B:
Ixy
Ixx
·
Iyy
>
4
.
4
5
×
1
0
-
5
A
.
B. F d <1.40 lbf.
2 . The golf club head of claim 1 , wherein the club head further satisfies relation C:
A
+
(
4
.
7
5
×
10
-
7
)
(
3.24
·
10
-
5
)
·
(
CG
h
e
i
g
h
t
)
>
1
.
C
.
3 . The golf club head of claim 1 , wherein the club head further satisfies relation D:
A
+
(
7
.
5
0
×
1
0
-
6
)
(
1
.
5
1
×
1
0
-
5
)
·
(
F
d
)
>
1
.
D
.
4 . The golf club head of claim 1 , wherein the head CG depth is greater than 1.3 inches.
5 . The golf club head of claim 1 , further comprises:
a 12 o'clock ray; a 3 o'clock ray; a 4 o'clock ray; a 5 o'clock ray; a 8 o'clock ray; a 9 o'clock ray; a 10 o'clock ray; and an 11 o'clock ray; when the golf club head is at an address portion, from a bottom view of the golf club head, the 12 o'clock ray is aligned with the geometric center of the strikeface and orthogonal to a front intersection line between the loft plane and a ground plane; the clock grid is centered along the 12 o'clock ray, at a midpoint between the front end and the back end; the 3 o'clock ray extends towards the heel; the 9 o'clock ray extends towards the toe; a first embedded weight and a second embedded weight; wherein the first embedded weight can be located near the toe and crown, at least partially bounded between the 11 o'clock ray and 9 o'clock ray of the clock grid, as well as intersecting the 10 o'clock ray; and wherein the second embedded weight can be located near the heel and the sole, at least partially bounded between the 3 o'clock ray and 5 o'clock ray of the clock grid, as well as intersecting the 4 o'clock ray.
6 . The golf club head of claim 1 , wherein the Iyy moment of inertia is greater than 4500 g·cm 2 .
7 . The golf club head of claim 1 , wherein the second material can comprise a composite selected from the group consisting of polymer resin, reinforcing fiber, and composite material.
8 . The golf club head of claim 1 , wherein the combined moment of inertia is greater than 7250 g·cm 2 .
9 . The golf club head of claim 1 , further comprising:
a front radius of curvature between 0.18 to 0.30 inch, wherein the front radius of curvature extends from a top edge of the strikeface to a crown transition point, the crown transition point indicating a change in curvature from the front radius of curvature to a different curvature of the crown; and a rear radius of curvature that extends between the crown and the skirt of the club head along a rear transition boundary from a first rear transition point located at a junction between the crown and the rear transition boundary and a second rear transition point located at a junction between the rear transition boundary and the skirt of the club head.
10 . The golf club head of claim 9 , further comprising:
a crown angle less than 79 degrees, wherein the crown angle is measured as an acute angle between a front plane and a crown axis that extends through the crown transition point and the rear transition point of the club head; and a maximum crown height greater than 0.50 inch, wherein the maximum crown height is measured as the greatest distance between a surface of the crown and the crown axis.
11 . A hollow body golf club head comprising:
a body having a front end, a back end opposite the front end, a crown, a sole opposite the crown, a heel, a toe opposite the heel, a skirt adjoining the crown and the sole, and a hosel structure having a hosel axis extending centrally through a bore in the hosel structure; a strikeface positioned at the front end and defining a geometric center, a loft plane tangent to the geometric center, and a head depth plane extending through the geometric center from the heel to the toe, perpendicular to the loft plane; wherein:
the strikeface comprises a first material, the body comprises a second material;
a loft angle of the club head is less than 16 degrees;
a volume of the club head is greater than 400 cc;
a head center of gravity of the club head is located at a head CG depth from the loft plane, measured in a direction perpendicular to the loft plane, and at a head CG height from a head depth plane, measured in a direction perpendicular to the head depth plane; the head CG height is less than 0.20 inches; a y-axis extending through the head center of gravity from the crown to the sole; an x-axis extending through the head center of gravity from the heel to the toe, wherein the x-axis is perpendicular to the y-axis; the club head experiences a drag force F d when subjected to an air speed of 102 mph in a direction perpendicular to a plane extending through the geometric center of the strikeface, parallel to the hosel axis, and positioned at the loft angle from the loft plane; the club head has a crown to sole moment of inertia Iyy, and a heel to toe moment of inertia Ixx, and a product of inertia Ixy about the x-axis and y-axis; wherein the product of inertia is at greater than 100 g·cm 2 ; the club head has a strike face to skirt moment of inertia Izz, and a heel to toe moment of inertia Ixx, and a product of inertia Ixz about a z-axis and about the x-axis; the club head satisfies relation A:
Ixz
Ixx
·
Izz
>
-
1
.
3
6
×
1
0
-
5
.
A
.
12 . The golf club head of claim 11 , wherein the club head further satisfies relation D:
A
-
(
1
.
1
2
×
10
-
4
)
(
9.01
·
10
-
5
)
·
(
CG
d
e
p
t
h
)
>
1
.
B
.
13 . The golf club head of claim 11 , wherein the club head further satisfies relation C:
A
-
(
9.23
×
1
0
-
5
)
(
6.99
×
10
-
5
)
·
(
F
d
)
>
1
.
C
.
14 . The golf club head of claim 11 , wherein the club head further satisfies relation D:
D. F d <1.40 lb.
15 . The golf club head of claim 11 , wherein the head CG depth is greater than 1.3 inches.
16 . The golf club head of claim 11 , further comprises:
a 12 o'clock ray; a 3 o'clock ray; a 4 o'clock ray; a 5 o'clock ray; a 8 o'clock ray; a 9 o'clock ray; a 10 o'clock ray; and an 11 o'clock ray; when the golf club head is at an address portion, from a bottom view of the golf club head, the 12 o'clock ray is aligned with the geometric center of the strikeface and orthogonal to a front intersection line between the loft plane and a ground plane; the clock grid is centered along the 12 o'clock ray, at a midpoint between the front end and the back end; the 3 o'clock ray extends towards the heel; and the 9 o'clock ray extends towards the toe; a first embedded weight and a second embedded weight; wherein the first embedded weight can be located near the toe and crown, at least partially bounded between the 11 o'clock ray and 9 o'clock ray of the clock grid, as well as intersecting the 10 o'clock ray; and wherein the second embedded weight can be located near the heel and the sole, at least partially bounded between the 3 o'clock ray and 5 o'clock ray of the clock grid, as well as intersecting the 4 o'clock ray.
17 . The golf club head of claim 16 , wherein the second material can comprise a composite selected from the group consisting of polymer resin, reinforcing fiber, and composite material.
18 . The golf club head of claim 11 , wherein the combined moment of inertia is greater than 7250 g·cm 2 .
19 . The golf club head of claim 1 , further comprising:
wherein the Ixz is greater −160 g·cm 2 .
20 . The golf club head of claim 11 , wherein the Iyy moment of inertia is greater than 4500 g·cm 2 .Join the waitlist — get patent alerts
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