Golf club head
DCFirst Claim
1. A club head for a golf club, the club head comprising a strike face and an outer shell defining a head volume of the club head, said club head having a first moment of inertia about a first axis that extends generally horizontally and parallel to said strike face, a second moment of inertia about a second axis that lies generally vertically and perpendicular to said first axis, and a center of gravity, said center of gravity lying below a horizontal centerline of said club head,wherein said first moment of inertia in units of kg-mm2, is greater than or equal to approximately 77 plus 0.46 times the head volume, in units of cm3.
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Accused Products
Abstract
A club head for a golf club comprises a strike face and an outer shell. The strike face and the outer shell define a head volume of the club head. The club head has a first axis that extends generally horizontally and parallel to the strike face, a first moment of inertia about the first axis, a second axis that lies generally vertically and perpendicular to the first horizontal axis, a second moment of inertia about the second axis, and a center of gravity lying below a horizontal centerline of the club head. The first moment of inertia in units of kg-mm2 is greater than or equal to approximately 77 plus 0.46 times the head volume in units of cm3.
361 Citations
55 Claims
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1. A club head for a golf club, the club head comprising a strike face and an outer shell defining a head volume of the club head, said club head having a first moment of inertia about a first axis that extends generally horizontally and parallel to said strike face, a second moment of inertia about a second axis that lies generally vertically and perpendicular to said first axis, and a center of gravity, said center of gravity lying below a horizontal centerline of said club head,
wherein said first moment of inertia in units of kg-mm2, is greater than or equal to approximately 77 plus 0.46 times the head volume, in units of cm3.
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26. A golf club head comprising:
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an outer shell; a strike plate coupled to the outer shell, the strike plate having a strike face, the outer shell and the strike face defining a club head volume; a center of gravity disposed below a horizontal centerline of the club head; a heel/toe axis extending through the center of gravity, generally parallel to the strike face, and generally horizontal relative to a ground plane when the club bead is at an address position; and a rotational moment of inertia about the heel/toe axis, wherein the rotational moment of inertia about the heel/toe axis is related to the club head volume by the equation Ixx≧
0.46*HV+77, where Ixx is the rotational moment of inertia about the heel/toe axis in units of kg-mm2 and HV is the club head volume in units of cm3. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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- 36. The golf club head of claim 36, wherein the horizontal distance measured between the center of gravity and the hosel axis is between about 16 mm to about 20 mm.
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47. A golf club head comprising:
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an outer shell; a strike plate coupled to the outer shell, the strike plate having a strike face, the outer shell and the strike face defining a club head volume; a center of gravity disposed at least 1 mm below a horizontal centerline of the club head; a hosel coupled to the outer shell and a hosel axis extending axially through the hosel, wherein a horizontal distance measured between the center of gravity and the hosel axis is between about 12 mm to about 25 mm; a heel/toe axis extending through the center of gravity, generally parallel to the strike face, and generally horizontal relative to a ground plane when the club head is at an address position; and a rotational moment of inertia about the heel/toe axis, wherein the rotational moment of inertia about the heel/toe axis is related to the club head volume by the equation Ixx≧
0.46*HV+77, where Ixx is the rotational moment of inertia about the heel/toe axis in units of kg-mm2 and HV is the club head volume in units of cm3;a vertical axis extending through the center of gravity of the club head generally perpendicular to the heel/toe axis; and a rotational moment of inertia about the vertical axis greater than 250 kg-mm2; wherein the golf club head has a total mass of less than 250 grams and a head volume between about 200 cm3 to about 450 cm3. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54, 55)
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Specification