Golf club
First Claim
1. A putter comprising:
- a club head comprisinga face portion,a sole portion extending rearward from the face portion,an aft mass portion rearward from the face portion a distance of between 2.5 inches to 4.5 inches,a crown portion extending rearward from the face portion, the crown portion having a central elongated section extending over the aft mass portion; and
a shaft connected to the club head, the shaft composed of an aluminum material;
wherein the putter has a swing static imbalance, Sy, greater than 500 grams-centimeter, the swing static imbalance defined as the product of the putter mass and the offset distance of the center of gravity of the club head behind the golfer'"'"'s hands along the target direction.
1 Assignment
0 Petitions
Accused Products
Abstract
A putter (100) having a club head (20) having a central aperture (32) with a rearward center of gravity is disclosed herein. The club head (20) has a body (22) that is preferably composed of stainless steel. The body (22) has a face portion (24), a crown portion (26), a sole portion (28) and an aft-mass portion (30). The face portion (24), the crown portion (26), the sole portion (28) and the aft-mass portion (30) define the central aperture (32). The crown portion (26) extends rearward from the face portion (24) over the aft-mass portion (30). The central aperture (32) separates the crown portion (26) from the sole portion (28) and the face portion (24) from the aft-mass portion (30). The crown portion (26) has an alignment means (40) thereon for aiming a golf ball during putting. The putter has novel inertial properties.
46 Citations
20 Claims
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1. A putter comprising:
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a club head comprising a face portion, a sole portion extending rearward from the face portion, an aft mass portion rearward from the face portion a distance of between 2.5 inches to 4.5 inches, a crown portion extending rearward from the face portion, the crown portion having a central elongated section extending over the aft mass portion; and a shaft connected to the club head, the shaft composed of an aluminum material; wherein the putter has a swing static imbalance, Sy, greater than 500 grams-centimeter, the swing static imbalance defined as the product of the putter mass and the offset distance of the center of gravity of the club head behind the golfer'"'"'s hands along the target direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A putter comprising:
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a club head comprising a face portion, a sole portion extending rearward from the face portion, an aft mass portion rearward from the face portion a distance of between 2.5 inches to 4.5 inches, a crown portion extending rearward from the face portion, the crown portion having a central elongated section extending over the aft mass portion; and a shaft connected to the club head, the shaft composed of a light-weight material having a density less than 7.0 grams per cubic centimeter; wherein the putter has a torsion swing inertia, Ixz, that has an absolute value greater than 10,000 grams-centimeter square, wherein the torsion swing inertia is defined as the product of inertia of the angular acceleration about the shaft axis and the angular acceleration about the swing axis. - View Dependent Claims (16, 17, 18, 19)
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20. A putter comprising:
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a club head comprising a face portion, a sole portion extending rearward from the face portion, an aft mass portion rearward from the face portion a distance of between 2.5 inches to 4.5 inches, a crown portion extending rearward from the face portion, the crown portion having a central elongated section extending over the aft mass portion; and a shaft connected to the club head, the shaft having an integrated grip portion with a textured coating thereon, the shaft composed of a light weight material having a density less than 7.00 grams per cubic centimeter; wherein the club head has at least 70 percent of its mass located in a center section.
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Specification