Patent ID: 9421430
Filing Date: 2016-08-23
CPC Classification: A63B,B22D,C22C

Claim Text:
1. A golf club head comprising: a hollow structure that includes an upper surface crown portion adjacent to a face portion for hitting a golf ball and connected to a bottom surface sole portion, wherein the golf club head has a toe portion opposite from a heel portion in a toe-heel direction, and back portion opposite the face portion in a face-back direction, wherein the crown portion has a first region having a first thickness and a plurality of second regions having a second thickness that is smaller than the first thickness, the plurality of second regions are distributed in a radiating fashion so as to extend from an origin toward a peripheral portion of the crown portion excluding the face portion side, the origin being located within 15 mm of the center of gravity of the golf club head in a toe-heel direction and also being located in the vicinity of the face side in a face-back direction in a plan view, the first region comprises a first portion and a second portion, the peripheral portion of the crown portion is configured by the first portion of the first region, a portion of the first region arranged between adjacent second regions is configured by the second portion of the first region such that the width of the second portion increases as the second portion extends from the origin side to the peripheral portion side of the first portion excluding the face portion side, a portion of the first region arranged between adjacent second regions is configured such that the width of the first region portion increases as the first region portion extends from the origin side to the peripheral portion side, and edges of the second regions on the peripheral portion side are connected to the peripheral portion configured by the first region.