Multi-piece golf club head with improved inertia
First Claim
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1. An iron-type golf club head, comprising:
- a first body member including a face, a rear surface, and a hosel;
a viscoelastic material coupled to said rear surface; and
a second body member coupled to said viscoelastic material;
wherein said second body member is a weight member with a mass of at least 10 grams;
wherein at least a portion of said rear surface has a concave profile extending from a heel of said club head to a toe of said club head and viscoelastic material is coupled to said rear surface within said concave profile; and
wherein the club head further comprises a center of gravity and a moment of inertia measured about a vertical axis passing through said center of gravity from approximately 2400 g·
cm2 to approximately 2900 g·
cm2.
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Accused Products
Abstract
A multi-piece iron-type golf club head with a substantial weight member is disclosed and claimed. The golf club head includes a plurality of body members. A first body member includes a face, a rear surface, and a hosel. A viscoelastic material is attached to the rear surface, and a second body member is attached to the viscoelastic material. The second body member, which may be a weight member, has a substantially larger mass than in known golf clubs.
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Citations
16 Claims
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1. An iron-type golf club head, comprising:
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a first body member including a face, a rear surface, and a hosel; a viscoelastic material coupled to said rear surface; and a second body member coupled to said viscoelastic material; wherein said second body member is a weight member with a mass of at least 10 grams; wherein at least a portion of said rear surface has a concave profile extending from a heel of said club head to a toe of said club head and viscoelastic material is coupled to said rear surface within said concave profile; and wherein the club head further comprises a center of gravity and a moment of inertia measured about a vertical axis passing through said center of gravity from approximately 2400 g·
cm2 to approximately 2900 g·
cm2. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A set of golf clubs, comprising:
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a plurality of golf club heads, wherein each head includes; a first body member including a face, a rear surface, and a hosel; a second body member coupled to said rear surface; a viscoelastic material intermediate said first and second body members; and a center of gravity and a moment of inertia measured about a vertical axis passing through said center of gravity; wherein each of said moments of inertia are substantially the same; and wherein a difference between a maximum and a minimum of said moments of inertia is 40 g·
cm2 or less. - View Dependent Claims (13, 14, 15, 16)
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Specification
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Current AssigneeCobra Golf Company (Puma SE)
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Original AssigneeAcushnet Company (FILA Holdings Corp.)
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InventorsBest, Christopher B.
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Primary Examiner(s)BLAU, STEPHEN LUTHER
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Application NumberUS11/064,965Publication NumberTime in Patent Office872 DaysField of Search473/332, 473/334, 473/337, 473290-291, 473335-336, 473/350US Class Current473/291CPC Class CodesA63B 2053/0491 with added weights, e.g. ch...A63B 53/0408 characterised by specific d...A63B 53/0433 with special sole configura...A63B 53/047 iron-typeA63B 60/02 Ballast means for adjusting...A63B 60/54 with means for damping vibr...
