Patent ID: 8574095
Filing Date: 2013-11-05
Classification: A63B

Abstract:
1. A golf club head having a hollow structure comprising a face portion which has a face to hit a golf ball, a crown portion which connects to an upper edge of the face and forms a top surface of the head, a sole portion which connects to a lower edge of the face and forms a bottom surface of the head, and a side portion between the crown portion and the sole portion, which extends from a toe-side edge of the face to a heel-side edge of the face through a back face of the head, wherein the face portion is provided in a central region thereof with a central thick-walled part having a thickness of 3.1 to 4.2 mm, and an inner surface of the head including a back surface of the face portion is provided with a crown-side thick-walled rib and a sole-side thick-walled rib, the crown-side thick-walled rib including the sole-side thick-walled rib including wherein Tc is a thickness of the central thick-walled part, Wc is a maximum width of the central thick-walled part in the toe-heel direction, Wru is a width of the crown-side thick-walled rib in the toe-heel direction, Wrd is a width of the sole-side thick-walled rib in the toe-heel direction, Tru is an average thickness of the crown-side thick-walled rib, and Trd is an average thickness of the sole-side thick-walled rib.