The invention prevents a resin member from being broken so as to improve durability. The invention provides a golf club head (1) in which at least a part of a crown portion (4) forming an upper surface of the head is formed by a resin member (FR) made of a fiber reinforced resin in which a fiber is oriented...http://www.google.com.tw/patents/US7905799?utm_source=gb-gplus-share專利 US7905799 - Golf club head
