Putter head
First Claim
1. A putter comprising:
- 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;
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.
5 Assignments
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.
56 Citations
40 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;
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;
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, 20, 21, 22, 23, 24, 25, 26, 27)
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28. 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;
wherein the club head has at least 70 percent of its mass located in a center section. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification