Golf club head
First Claim
Patent Images
1. A golf club head, comprising:
- a body, defining an interior cavity and comprising;
a sole portion, positioned at a bottom region of the golf club head, the sole portion having a sole surface area;
a crown portion, positioned at a top region of the golf club head, the crown portion having a crown surface area;
a skirt portion, positioned around a periphery of the golf club head between the sole portion and the crown portion;
a forward region;
a rearward region, opposite the forward region;
a heel region; and
a toe region, opposite the heel region;
a face portion, coupled to the body, at the forward region of the body, and comprising a strike face and an interior surface, opposite the strike face; and
a stiffener located within the interior cavity of the body and in direct contact with the interior surface of the face portion, wherein the stiffener is made of a material having a hardness of at least Shore 5.95D;
wherein;
an areal weight of the crown portion of the golf club head is less than about 0.35 g/cm2 over more than about 50% of an entire surface area of the crown portion;
the golf club head has a center of gravity (CG) with a head center face origin x-axis coordinate between about −
5 mm and about 5 mm and a head center face origin y-axis coordinate between about 25 mm and about 50 mm, and a center face head origin z-axis coordinate less than 2 mm;
the strike face has a central region, defined by a forty millimeter by twenty millimeter rectangular area centered on a center of the strike face and elongated in a heel-to-toe direction;
the face portion has a thickness that varies;
within the central region, the face portion has a maximum face thickness no more than 4.5 mm and a minimum face thickness no less than 2.0 mm;
within the central region, the strike face has a characteristic time (CT) of no more than 257 microseconds;
within the central region, no less than 25% of the strike face has a coefficient of restitution (COR) of at least 0.8;
within the central region, no less than 60% of the strike face has a CT of at least 235 microseconds;
within the central region, no less than 35% of the strike face has a CT of at least 240 microseconds;
the golf club head has a volume between about 350 cm3 and about 500 cm3, a moment of inertia about a head center of gravity z-axis (Izz), and a moment of inertia about a head center of gravity x-axis (Ixx);
a summation of Izz and Ixx is between about 740 kg·
mm2 and about 1100 kg·
mm2;
the face portion further comprises;
an aperture, extending through the face portion from the strike face to the interior surface; and
a plug, fixedly retained within the aperture; and
the plug protrudes no more than 0.15 millimeters from the strike face or is sunken below the surface of the strike face no more than 0.1 millimeters.
7 Assignments
0 Petitions
Accused Products
Abstract
Disclosed herein is a golf club head that comprises a strike face. The strike face has a central region, defined by a forty millimeter by twenty millimeter rectangular area centered on a center of the strike face and elongated in a heel-to-toe direction. Within the central region, the strike face has a characteristic time (CT) of no more than 257 microseconds. Within the central region, no less than 25% of the strike face has a coefficient of restitution (COR) of at least 0.8. Within the central region, no less than 60% of the strike face has a CT of at least 235 microseconds. Within the central region, no less than 35% of the strike face has a CT of at least 240 microseconds.
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Citations
20 Claims
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1. A golf club head, comprising:
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a body, defining an interior cavity and comprising; a sole portion, positioned at a bottom region of the golf club head, the sole portion having a sole surface area; a crown portion, positioned at a top region of the golf club head, the crown portion having a crown surface area; a skirt portion, positioned around a periphery of the golf club head between the sole portion and the crown portion; a forward region; a rearward region, opposite the forward region; a heel region; and a toe region, opposite the heel region; a face portion, coupled to the body, at the forward region of the body, and comprising a strike face and an interior surface, opposite the strike face; and a stiffener located within the interior cavity of the body and in direct contact with the interior surface of the face portion, wherein the stiffener is made of a material having a hardness of at least Shore 5.95D; wherein; an areal weight of the crown portion of the golf club head is less than about 0.35 g/cm2 over more than about 50% of an entire surface area of the crown portion; the golf club head has a center of gravity (CG) with a head center face origin x-axis coordinate between about −
5 mm and about 5 mm and a head center face origin y-axis coordinate between about 25 mm and about 50 mm, and a center face head origin z-axis coordinate less than 2 mm;the strike face has a central region, defined by a forty millimeter by twenty millimeter rectangular area centered on a center of the strike face and elongated in a heel-to-toe direction; the face portion has a thickness that varies; within the central region, the face portion has a maximum face thickness no more than 4.5 mm and a minimum face thickness no less than 2.0 mm; within the central region, the strike face has a characteristic time (CT) of no more than 257 microseconds; within the central region, no less than 25% of the strike face has a coefficient of restitution (COR) of at least 0.8; within the central region, no less than 60% of the strike face has a CT of at least 235 microseconds; within the central region, no less than 35% of the strike face has a CT of at least 240 microseconds; the golf club head has a volume between about 350 cm3 and about 500 cm3, a moment of inertia about a head center of gravity z-axis (Izz), and a moment of inertia about a head center of gravity x-axis (Ixx); a summation of Izz and Ixx is between about 740 kg·
mm2 and about 1100 kg·
mm2;the face portion further comprises; an aperture, extending through the face portion from the strike face to the interior surface; and a plug, fixedly retained within the aperture; and the plug protrudes no more than 0.15 millimeters from the strike face or is sunken below the surface of the strike face no more than 0.1 millimeters. - 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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Specification