Golf Clubs With Golf Club Heads Having Grooves
AssigneeNIKE, Inc.
InventorsWilliam C. Knight, Christopher R. Savage, Michael G. Taylor, James S. Thomas
Life of this patent
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Abstract
A golf club with a golf club head having a plurality of grooves formed in a ball striking surface of the golf club head wherein the side walls of each groove slope inwardly from the striking face toward a bottom of the groove at an angle of 25.5 to 27.5 degrees from an axis of symmetry extending perpendicular from the striking face.
Claims23
A golf club head comprising a substantially flat striking face and a plurality of grooves formed therein,
- wherein at least one of said grooves comprises:
- side walls wherein each side wall slopes inwardly from the striking face toward a bottom of the groove at an angle of 25.5 to 28.5 degrees from an axis of symmetry extending perpendicular from the striking face;
- a depth extending perpendicular from the striking face to the bottom of the groove of 0.013 to 0.018 inch;
- and
- wherein spacing between adjacent groove edges is 0.085 to 0.098 inches.
A golf club head comprising a substantially flat striking face and a plurality of grooves formed therein,
- wherein at least one of said grooves comprises:
- side walls wherein each side wall slopes inwardly from the striking face toward a bottom of the groove at an angle of 25.5 to 28.5 from an axis of symmetry extending perpendicular from the striking face;
- a depth extending perpendicular from the striking face to the bottom of the groove of 0.013 to 0.018 inch;
- and
- a width at the top of the groove of 0.025 to 0.030 inches.
A golf club head comprising a substantially flat striking face and a plurality of grooves formed therein,
- wherein at least one of said grooves comprises:
- side walls wherein each side wall slopes inwardly from the striking face toward a bottom of the groove at an angle of 25.5 to 28.5 from an axis of symmetry extending perpendicular from the striking face;
- and
- a width at the top of the groove of 0.025 to 0.030 inches;
- wherein spacing between adjacent grooves is 0.085 to 0.098 inches.
A golf club head comprising a substantially flat striking face and a plurality of grooves formed therein,
- wherein at least one of said grooves comprises:
- side walls wherein each side wall slopes inwardly from the striking face toward a bottom of the groove at an angle of 25.5 to 28.5 degrees from an axis of symmetry extending perpendicular from the striking face;
- a depth extending perpendicular from the striking face to the bottom of the groove of 0.013 to 0.018 inch;
- a groove width extending across the top of the groove of 0.025 to 0.030 inch;
- a groove area is 0.00028 to 0.00036 in2;
- wherein the area of each of said grooves divided by groove pitch is 0.0018 to 0.0030 in2/in;
- wherein spacing (S) between adjacent grooves is 0.085 to 0.095 inches;
- and
- the loft angle of the club head is 44° to 70°.
Dependencies are inferred from the claim text.