Golf club head having movable weights
First Claim
Patent Images
1. A golf club head having a face, comprising:
- a first threaded aperture for receiving a fastener to secure a first weight to the golf club head;
wherein the first threaded aperture is positioned toeward of a geometric center of the face of the golf club head and the first threaded aperture has a head origin y-axis coordinate between 50 mm and 130 mm;
wherein the first weight having a mass between 1 gram and 25 grams;
wherein the golf club head has a golf club head center of gravity with a CG head origin z-axis coordinate less than about 0 mm, a CG head origin y-axis coordinate greater than 15 mm and less than 50 mm, and a CG head origin x-axis coordinate greater than about 10 mm and less than about 10 mm;
wherein the golf club head has a face with a face thickness that varies, and a maximum face thickness is no more than 6 mm and a minimum face thickness is no less than 1.5 mm;
wherein the golf club head has a coefficient of restitution greater than about 0.8 and less than 1.0; and
wherein the golf club head has a volume between about 250 cm3 and about 500 cm3, a moment of inertia about a head center of gravity z-axis (Izz), and a moment of inertia about a head center of gravity x-axis (Ixx), and a summation of Izz and Ixx is between about 740 kg·
mm2 about 1000 kg·
mm2;
wherein the golf club head has a crown areal weight less than about 0.35 g/cm2 over more than about 50% of the crown surface area;
wherein the moment of inertia about the golf club head CG z-axis divided by the club head mass excluding the mass contribution from the first weight is between about 2,000 mm2 and about 3,000 mm2.
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Accused Products
Abstract
A golf club head comprises a body and at least one self-extracting pressed weight assembly. The body comprises a face plate positioned at a forward portion of the golf club head, a sole positioned at a bottom portion of the golf club head, a crown positioned at a top portion of the golf club head and a skirt positioned around a periphery of the golf club head between the sole and the crown. The body defines an interior cavity. The weight assembly comprises at least three components and is configured for a press fit engagement with the golf club head. The assembly has a drive portion and a threaded portion.
200 Citations
20 Claims
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1. A golf club head having a face, comprising:
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a first threaded aperture for receiving a fastener to secure a first weight to the golf club head; wherein the first threaded aperture is positioned toeward of a geometric center of the face of the golf club head and the first threaded aperture has a head origin y-axis coordinate between 50 mm and 130 mm; wherein the first weight having a mass between 1 gram and 25 grams; wherein the golf club head has a golf club head center of gravity with a CG head origin z-axis coordinate less than about 0 mm, a CG head origin y-axis coordinate greater than 15 mm and less than 50 mm, and a CG head origin x-axis coordinate greater than about 10 mm and less than about 10 mm; wherein the golf club head has a face with a face thickness that varies, and a maximum face thickness is no more than 6 mm and a minimum face thickness is no less than 1.5 mm; wherein the golf club head has a coefficient of restitution greater than about 0.8 and less than 1.0; and wherein the golf club head has a volume between about 250 cm3 and about 500 cm3, a moment of inertia about a head center of gravity z-axis (Izz), and a moment of inertia about a head center of gravity x-axis (Ixx), and a summation of Izz and Ixx is between about 740 kg·
mm2 about 1000 kg·
mm2;wherein the golf club head has a crown areal weight less than about 0.35 g/cm2 over more than about 50% of the crown surface area; wherein the moment of inertia about the golf club head CG z-axis divided by the club head mass excluding the mass contribution from the first weight is between about 2,000 mm2 and about 3,000 mm2. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A golf club head, comprising:
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at least two recesses for receiving at least two interchangeable weights; the interchangeable weights configured to substantially conform to the recesses of the club head; wherein one or more ribs are positioned within an interior cavity of the golf club head and connect at least one of the at least two recesses to an interior surface of the interior cavity; wherein at least one of the two recesses is located in a forward position and has a head origin y-axis coordinate less than about 50 mm, and at least one of the two recesses is located in a rearward position and has a head origin y-axis coordinate greater than about 50 mm; wherein the recesses have a volume between about 0.3 cm3 and about 15 cm3; wherein the interchangeable weights range from about 1 gram to about 25 grams; and
wherein the golf club head has a CG (center of gravity) with a head origin x-axis coordinate between about −
4 mm and about 4 mm;wherein the golf club head has a volume between about 250 cm3 and about 500 cm3, a moment of inertia about a head center of gravity z-axis (Izz), and a moment of inertia about a head center of gravity x-axis (Ixx), and a summation of Izz and Ixx is between about 740 kg·
mm2 about 1000 kg·
mm2;wherein the golf club head has a crown areal weight less than about 0.35 g/cm2 over more than about 50% of the crown surface area. - View Dependent Claims (16)
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17. A golf club head having a face, comprising:
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one or more movable weights securable to the golf club head at three or more positions, wherein the three or more positions include a first position located heelward of a geometric center of the face of the golf club head, a second position located toeward of the geometric center of the face of the golf club head, and a third position located in between the first position and the second position; wherein the three or more positions are proximate a perimeter of the golf club head; wherein the one or more movable weights are secured to the golf club head by tightening a fastener; wherein the golf club head has a volume between about 250 cm3 and about 500 cm3, a moment of inertia about a head center of gravity z-axis (Izz), and a moment of inertia about a head center of gravity x-axis (Ixx), and a summation of Izz and Ixx is between about 740 kg·
mm2 about 1000 kg·
mm2;wherein the golf club head has a crown areal weight less than about 0.35 g/cm2 over more than about 50% of the crown surface area. - View Dependent Claims (18, 19, 20)
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Specification