Golf club head with top line insert
First Claim
Patent Images
1. An iron-type golf club head, comprising:
- a body defining a top line comprising a recess extending along the top line no further than about halfway around a toe of the club head toward a sole of the club head, and wherein the body is formed of a first material with a first specific gravity, wherein the recess comprises a channel having a substantially rearward-facing surface facing a substantially forward-facing surface when the club is at address;
an insert positioned within the top line recess, wherein the top line insert is formed of a second material with a second specific gravity,wherein the second specific gravity is different than the first specific gravity, and wherein the club head satisfies the relationship;
IZZ≧
CGZ*170where IZZ is the rotational moment of inertia about a vertical axis and has units of g/cm2 and CGZ is the center of gravity and has units of mm.
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Abstract
A golf club head having a recess located in a top portion thereof between the heel and the toe and extending toward the sole. The recess may be only in the top line of the club head or extend from the heel around the toe. An insert may be placed within the recess. The insert may have a density that is less than the density of the club head body to lower the center of gravity and moment of inertia or greater than the density of the club head body to raise the center of gravity and moment of inertia.
155 Citations
28 Claims
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1. An iron-type golf club head, comprising:
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a body defining a top line comprising a recess extending along the top line no further than about halfway around a toe of the club head toward a sole of the club head, and wherein the body is formed of a first material with a first specific gravity, wherein the recess comprises a channel having a substantially rearward-facing surface facing a substantially forward-facing surface when the club is at address; an insert positioned within the top line recess, wherein the top line insert is formed of a second material with a second specific gravity, wherein the second specific gravity is different than the first specific gravity, and wherein the club head satisfies the relationship;
IZZ≧
CGZ*170where IZZ is the rotational moment of inertia about a vertical axis and has units of g/cm2 and CGZ is the center of gravity and has units of mm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A set of iron type golf clubs comprising:
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at least one club comprising a first club head comprising; a body defining a top line comprising a recess extending along the top line no further than about halfway around a toe of the club head toward a sole of the club head, and wherein the body is formed of a first material with a first specific gravity; an insert positioned within the recess, wherein the insert has a second specific gravity, and wherein the second specific gravity is less than the first specific gravity; and at least one club comprising a second club head comprising; a body defining a top line comprising a recess extending along the top line no further than about halfway around a toe of the club head toward a sole of the club head, and wherein the body is formed of a third material with a third specific gravity; an insert positioned within the recess, wherein the insert has a fourth specific gravity, and wherein the fourth specific gravity is greater than the third specific gravity, wherein each recess comprises a channel having a substantially rearward-facing surface facing a substantially forward-facing surface when the club is at address. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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Specification