IRON GOLF CLUB WITH IMPROVED MASS PROPERTIES AND VIBRATION DAMPING
First Claim
1. A golf club head, comprising:
- a body portion defining a perimeter weight and constructed of a first material;
a hitting face disposed at the front of the body portion;
a channel defined by a portion of the perimeter weight, at least a portion of the channel being fully circumscribed by the perimeter weight and a back surface of the face;
at least one opening in the body portion adjacent to the channel, the opening located at a back of the body portion;
wherein a part of the channel is not exposed by the at least one opening;
said at least one opening comprising a first opening positioned near a top line of the body portion and a second opening positioned near a sole of the body portion;
a second material disposed in at least a portion of the channel, wherein the second material is different from the first material;
a third material disposed in at least a portion of the channel, wherein the third material is different from the first and second materials; and
wherein said second material is exposed by said first opening, and said third material is exposed by said second opening.
2 Assignments
0 Petitions
Accused Products
Abstract
A golf club is provided having improved playing characteristics based upon a multiple material construction. This construction involves a club body in combination with a face insert that defines a hollow channel therebetween. This hollow channel is substantially filled with a heterogeneous viscoelastic material, such as urethane containing tungsten powder. The heterogeneous material is formulated such that the density of the material is varied based upon the location of that material within the hollow channel of the golf club head. In particular, lower density portions of the material are located near the top of the club head, and higher density portions are located near the bottom or sole of the club head. This moves the center of gravity of the club head downward and rearward, yielding improved feel and improved weight distribution and enhancing performance of the club.
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Citations
20 Claims
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1. A golf club head, comprising:
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a body portion defining a perimeter weight and constructed of a first material; a hitting face disposed at the front of the body portion; a channel defined by a portion of the perimeter weight, at least a portion of the channel being fully circumscribed by the perimeter weight and a back surface of the face; at least one opening in the body portion adjacent to the channel, the opening located at a back of the body portion; wherein a part of the channel is not exposed by the at least one opening; said at least one opening comprising a first opening positioned near a top line of the body portion and a second opening positioned near a sole of the body portion; a second material disposed in at least a portion of the channel, wherein the second material is different from the first material; a third material disposed in at least a portion of the channel, wherein the third material is different from the first and second materials; and wherein said second material is exposed by said first opening, and said third material is exposed by said second opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A golf club head, comprising:
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a body portion defining a perimeter weight and constructed of a first material; a hitting face disposed at the front of the body portion; a channel defined by a portion of the perimeter weight, at least a portion of the channel being fully circumscribed by the perimeter weight and a back surface of the face; at least one opening in the body portion adjacent to the channel, the opening located at a back of the body portion; said at least one opening comprising a first opening positioned near a top line of the body portion and a second opening positioned near a sole of the body portion; a second material disposed in at least a first portion of the channel, wherein the second material is different from the first material, wherein said second material is exposed by said second opening; a second portion of the channel, wherein no material is disposed within the second portion of the channel creating a hollow space, wherein the hollow space is exposed by said first opening. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A golf club head, comprising:
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a body portion defining a perimeter weight and constructed of a first material; a hitting face disposed at the front of the body portion; a channel defined by a portion of the perimeter weight, at least a portion of the channel being fully circumscribed by the perimeter weight and a back surface of the face; a second material disposed in at least a portion of the channel, wherein the second material is a heterogeneous composite material and is different than the first material; wherein said second material is exposed by at least one of said first or second opening, a step running along the perimeter weight, spaced from the back surface of the face to produce a gap, configured to allow the injection of the second material through the gap and into at least a portion of the channel. - View Dependent Claims (19, 20)
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Specification