US2024367013A1PendingUtilityA1
Club head having balanced impact and swing performance characteristics
Est. expiryNov 18, 2036(~10.3 yrs left)· nominal 20-yr term from priority
A63B 53/0412A63B 60/006A63B 53/0445A63B 53/0437A63B 53/0433A63B 53/0408A63B 60/02A63B 2053/0491A63B 53/0466
80
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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, 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, 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:
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 0.2 inch;
the head CG depth is greater than 1.0 inch;
the club head experiences a drag force F D less than 1.4 lbf 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 I xx , a heel to toe moment of inertia I yy , and a combined moment of inertia measured
as a sum of the crown-to-sole moment of inertia and the heel to toe moment of inertia I xx +I yy ; and
the club head satisfies relation A and relation B:
F
D
+
1.9
2.1
(
the
head
CG
depth
)
<
1
A
F
D
+
2
.
7
0.0007
(
I
x
x
+
I
y
y
)
<
1
B
2 . The golf club head of claim 1 , further comprising one or more thin regions on the body having a thickness less than 0.02 inch.
3 . 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.
4 . The golf club head of claim 1 , further comprising a combined moment of inertia greater than 9000 g·cm 2 .
5 . The golf club head of claim 1 , further comprising:
a clock grid having at least:
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; and
a 9 o'clock ray;
wherein:
the 12 o'clock ray is aligned with the geometric center of the strikeface and the clock grid is centered along the 12 o'clock ray at a midpoint between the front end and the back end of the club head;
the 3 o'clock ray extends towards the heel of the club head; and
the 9 o'clock ray extends towards the toe of the club head;
a weight structure located towards the sole and back end of the club head, the weight structure comprising a weight perimeter and a removable weight.
6 . The golf club head of claim 5 , wherein the weight structure protrudes from an external contour of the sole.
7 . The golf club head of claim 5 , wherein the weight structure comprises a removable weight having a weight center located between the 5 o'clock ray and the 8 o'clock ray of clock grid.
8 . 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:
a volume of the club head is greater than 400 cc;
a loft angle of the club head is less than 16 degrees;
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 0.2 inch;
the head CG depth is greater than 1.0 inch;
the club head experiences a drag force Fp less than 1.15 lbf 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 I xx , a heel to toe moment of inertia I yy , and a combined moment of inertia measured
as a sum of the crown-to-sole moment of inertia and the heel to toe moment of inertia I xx +I yy ; wherein
I yy is greater than 3100 g·cm 2 ; and
the club head satisfies relation A and relation B:
F
D
+
1.9
2.1
(
the
head
CG
depth
)
<
1
A
F
D
+
2
.
7
0.0007
(
I
x
x
+
I
y
y
)
<
1
B
9 . The golf club head of claim 8 , further comprising one or more thin regions on the body having a thickness less than 0.02 inch.
10 . The golf club head of claim 8 , 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.
11 . The golf club head of claim 8 , further comprising a combined moment of inertia greater than 9000 g·cm 2 .
12 . The golf club head of claim 8 , further comprising:
a clock grid having at least:
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; and
a 9 o'clock ray;
wherein:
the 12 o'clock ray is aligned with the geometric center of the strikeface and the clock grid is centered along the 12 o'clock ray at a midpoint between the front end and the back end of the club head;
the 3 o'clock ray extends towards the heel of the club head; and
the 9 o'clock ray extends towards the toe of the club head;
a weight structure located towards the sole and the back end of the club head, the weight structure comprising a weight perimeter and a removable weight.
13 . The golf club head of claim 12 , wherein the weight structure protrudes from an external contour of the sole.
14 . The golf club head of claim 12 , wherein the weight structure comprises a removable weight having a weight center located between the 5 o'clock ray and the 8 o'clock ray of the clock grid.Join the waitlist — get patent alerts
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