Patent ID: 8721471

Claim:
A hollow golf club head ( 400 ) comprising: (i) a face ( 500 ) positioned at a front portion ( 402 ) of the golf club head ( 400 ) where the golf club head ( 400 ) impacts a golf ball, opposite a rear portion ( 404 ) of the golf club head ( 400 ), wherein the face ( 400 ) includes an engineered impact point (EIP), a top edge height (TEH), and a lower edge height (LEH), wherein a face height between the maximum top edge height (TEH) and the minimum lower edge (LEH) is less than 1.50 inches; (ii) a sole ( 700 ) positioned at a bottom portion of the golf club head ( 400 ); (iii) a crown ( 600 ) positioned at a top portion of the golf club head ( 400 ); (iv) a bore having a center that defines a shaft axis (SA) which intersects with a horizontal ground plane (GP) to define an origin point, wherein the bore is located at a heel side ( 406 ) of the golf club head ( 400 ), and wherein a toe side ( 408 ) of the golf club head ( 400 ) is located opposite of the heel side ( 406 ); (v) a center of gravity (CG) located: (a) vertically toward the crown ( 600 ) of the golf club head ( 400 ) from the origin point a distance Ycg; (b) horizontally from the origin point toward the toe side ( 408 ) of the golf club head ( 400 ) a distance Xcg that is generally parallel to the face ( 500 ) and the ground plane (GP); and (c) a distance Zcg from the origin toward the rear portion ( 404 ) in a direction generally orthogonal to the vertical direction used to measure Ycg and generally orthogonal to the horizontal direction used to measure Xcg; and (vi) a stress reducing feature ( 1000 ) including a sole located SRF ( 1300 ) located on the sole ( 700 ), wherein the sole located SRF ( 1300 ) has a SSRF length ( 1310 ) between a SSRF toe-most point ( 1312 ) and a SSRF heel-most point ( 1316 ), a SSRF leading edge ( 1320 ) having a SSRF leading edge offset ( 1322 ), a SSRF width ( 1340 ), and a SSRF depth ( 1350 , wherein the maximum SSRF width ( 1340 ) is at least ten percent of the Zcg distance and the maximum SSRF depth ( 1350 ) is at least ten percent of the Ycg distance, and wherein the face ( 500 ) has a characteristic time of at least 220 microseconds, and a head volume is less than 200 cubic centimeters.