Golf club head with center of gravity adjustability
First Claim
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1. A wood-type golf club head comprising:
- a body comprising a face, a hosel, a rear portion, and a metal sole;
a crown composed of a carbon material;
a hollow tube composed of a carbon material; and
a cartridge comprising a first material having a first specific gravity, a second material having a second specific gravity that is greater than the value of the first specific gravity, a length L, and a mass MT,wherein the tube is disposed within a hollow interior of the golf club head and extends from the crown to the sole,wherein the cartridge is sized to fit within the tube,wherein the tube is accessible via an opening in the sole,wherein changing the orientation of the cartridge within the tube changes the location of the golf club head'"'"'s center of gravity along a vertical Z axis,wherein the golf club head has a mass M,wherein the distance from the midpoint of the length L to a center of gravity of the cartridge when the cartridge is disposed within the tube such that the material having the second specific gravity is closer to the sole is defined as ½
D,wherein the golf club head satisfies the equation D≧
0.065(1+M/MT), andwherein D is the total center of gravity distance change in inches for the cartridge when its orientation is changed within the tube by being flipped.
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Abstract
The present invention comprises a golf club head comprising a body having a crown, a sole, a front will and a hosel, wherein the body defines a hollow interior. The golf club head further comprises a center of gravity height adjustment assembly wherein the center of gravity height adjustment assembly is positioned within the hollow interior of the body. The center of gravity of the golf club head can be adjusted approximately 0.050 inch and 0.100 inch.
171 Citations
16 Claims
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1. A wood-type golf club head comprising:
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a body comprising a face, a hosel, a rear portion, and a metal sole; a crown composed of a carbon material; a hollow tube composed of a carbon material; and a cartridge comprising a first material having a first specific gravity, a second material having a second specific gravity that is greater than the value of the first specific gravity, a length L, and a mass MT, wherein the tube is disposed within a hollow interior of the golf club head and extends from the crown to the sole, wherein the cartridge is sized to fit within the tube, wherein the tube is accessible via an opening in the sole, wherein changing the orientation of the cartridge within the tube changes the location of the golf club head'"'"'s center of gravity along a vertical Z axis, wherein the golf club head has a mass M, wherein the distance from the midpoint of the length L to a center of gravity of the cartridge when the cartridge is disposed within the tube such that the material having the second specific gravity is closer to the sole is defined as ½
D,wherein the golf club head satisfies the equation D≧
0.065(1+M/MT), andwherein D is the total center of gravity distance change in inches for the cartridge when its orientation is changed within the tube by being flipped. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A driver-type golf club head comprising
a body composed of a titanium alloy comprising a face, a hosel, a rear portion, and a sole, wherein the sole is composed of a titanium alloy; -
a crown composed of a carbon material; a hollow tube composed of a carbon material; a cap screw; and a cartridge comprising a polymer and a slug composed of a material having a specific gravity that is greater than that of the polymer and having a length L and a mass MT, wherein the tube is disposed within a hollow interior of the golf club head proximate the face and extends from the crown to the sole, wherein the cartridge is sized to fit within the tube, wherein the tube is accessible via an opening in the sole, wherein the cap screw is sized to close the opening in the sole and thereby reversibly fix the cartridge within the tube, wherein reversing the orientation of the cartridge within the tube changes the location of the golf club head'"'"'s center of gravity by no less than 0.050 inch and no more than 0.100 inch along a vertical Z axis, wherein the golf club head has a mass M, wherein the distance from the midpoint of the length L to a center of gravity of the cartridge when the cartridge is disposed within the tube such that the slug is closer to the sole is defined as ½
D,wherein the golf club head satisfies the equation D≧
0.065(1+M/MT), andwherein D is the total center of gravity distance change in inches for the cartridge when its orientation is changed within the tube by being flipped. - View Dependent Claims (15, 16)
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Specification
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Current AssigneeCallaway Golf Company
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Original AssigneeCallaway Golf Company
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InventorsSeluga, James A., Dawson, Patrick
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Primary Examiner(s)BLAU, STEPHEN LUTHER
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Application NumberUS14/039,102Time in Patent Office354 DaysField of Search473334-339, 473/345US Class Current473/338CPC Class CodesA63B 2053/0491 with added weights, e.g. ch...A63B 2209/02 with reinforcing fibres, e....A63B 53/04 HeadsA63B 53/0408 characterised by specific d...A63B 53/0466 wood-typeA63B 53/06 adjustableA63B 60/00 Details or accessories of g...A63B 60/02 Ballast means for adjusting...
