Golf club heads and methods to manufacture golf club heads
First Claim
1. A golf club head comprising:
- a body portion having an interior cavity and a front portion;
a face portion attached to the front portion of the body portion to enclose the interior cavity;
a first filler material coupled to a portion of an inner wall of the body portion; and
a second filler material between the first filler material and the face portion and coupled to the face portion,wherein the first filler material has a greater coefficient of restitution (COR) than the second filler material,wherein the second filler material has a greater stiffness than the first filler material,wherein a COR of the golf club head is greater than or equal to 0.82, andwherein a volume of the first filler material is greater than or equal to 5% of a volume of the body portion and less than or equal to 20% of the volume of the body portion, wherein the volume of the first filler material is greater than or equal to 20% of a volume of the interior cavity and less than or equal to 45% of the volume of the interior cavity, wherein a mass of the first filler material is greater than or equal to 1.0% of a mass of the body portion and less than or equal to 3.5% of the mass of the body portion, and wherein a mass of the second filler material is greater than or equal to 2.5% of the mass of the body portion and less than or equal to 8.5% of the mass of the body portion.
1 Assignment
0 Petitions
Accused Products
Abstract
Embodiments of golf club heads, golf clubs, and methods to manufacture golf club heads and golf clubs are generally described herein. In one example, a golf club head may include a body portion having an interior cavity and a front portion. A face portion is attached to the front portion of the body portion to enclose the interior cavity. The golf club head may further include a first filler material coupled to a portion of an inner wall of the body portion, and a second filler material between the first filler material and the face portion and coupled to the face portion. The first filler material has a greater coefficient of restitution (COR) than the second filler material, and the second filler material has a greater stiffness than the first filler material. Other examples and embodiments may be described and claimed.
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Citations
25 Claims
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1. A golf club head comprising:
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a body portion having an interior cavity and a front portion; a face portion attached to the front portion of the body portion to enclose the interior cavity; a first filler material coupled to a portion of an inner wall of the body portion; and a second filler material between the first filler material and the face portion and coupled to the face portion, wherein the first filler material has a greater coefficient of restitution (COR) than the second filler material, wherein the second filler material has a greater stiffness than the first filler material, wherein a COR of the golf club head is greater than or equal to 0.82, and wherein a volume of the first filler material is greater than or equal to 5% of a volume of the body portion and less than or equal to 20% of the volume of the body portion, wherein the volume of the first filler material is greater than or equal to 20% of a volume of the interior cavity and less than or equal to 45% of the volume of the interior cavity, wherein a mass of the first filler material is greater than or equal to 1.0% of a mass of the body portion and less than or equal to 3.5% of the mass of the body portion, and wherein a mass of the second filler material is greater than or equal to 2.5% of the mass of the body portion and less than or equal to 8.5% of the mass of the body portion. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A golf club head comprising:
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a body portion having an interior cavity and a front portion; a face portion attached to the front portion of the body portion to enclose the interior cavity; a first filler material coupled to a portion of an inner wall of the body portion; and a second filler material between the first filler material and the face portion and coupled to the face portion, wherein the second filler material has a greater stiffness than the first filler material, wherein a volume of the first filler material is greater than or equal to 5% of a volume of the body portion and less than or equal to 20% of the volume of the body portion, wherein the volume of the first filler material is greater than or equal to 20% of a volume of the interior cavity and less than or equal to 45% of the volume of the interior cavity, wherein a mass of the first filler material is greater than or equal to 1.0% of a mass of the body portion and less than or equal to 3.5% of the mass of the body portion, and wherein a mass of the second filler material is greater than or equal to 2.5% of the mass of the body portion and less than or equal to 8.5% of the mass of the body portion. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A golf club head comprising:
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a body portion having an interior cavity and a front portion; a face portion attached to the front portion of the body portion to enclose the interior cavity, the face portion having a thickness of less than or equal to 0.075 inches (1.9 millimeters); a first filler material coupled to a portion of an inner wall of the body portion; and a second filler material between the first filler material and the face portion and coupled to the face portion, wherein the first filler material comprises a rubber-based compound, wherein the second filler material comprises an epoxy-based compound, the second filler material having a smaller coefficient of restitution (COR) than the first filler material, and wherein a center portion of the face portion has a maximum deflection of greater than or equal to 0.0197 inches (0.5 millimeters) with a golf ball striking the center portion of the face portion at a velocity of 85 miles per hour (38 meters/second), and wherein a COR of the golf club head is greater than or equal to 0.81. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A golf club head comprising:
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a body portion having an interior cavity and a front portion; a face portion attached to the front portion of the body portion to enclose the interior cavity; a first filler material coupled to a portion of an inner wall of the body portion; and a second filler material between the first filler material and the face portion and coupled to the face portion, wherein the first filler material has a greater coefficient of restitution (COR) than the second filler material, wherein the second filler material has a greater stiffness than the first filler material, wherein a COR of the golf club head is greater than or equal to 0.82, and wherein an overall mass of the second filler material in the interior cavity is greater than an overall mass of the first filler material in the interior cavity. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification