发明名称 Golf club set
摘要 A golf club set 2 includes a plurality of golf clubs 41 to 45 having different club lengths. Each of the golf clubs 41 to 45 includes a head 6, a shaft 8, and a grip 10. The club length of each of the clubs 41 to 45 is 38.5 inches or greater and 42 inches or less. Face progression of the head 6 is substantially constant. If a moment of inertia of the head about an axis line of the shaft is defined as MI, an MI difference ratio between the adjacent clubs is equal to or less than 3%. Preferably, a loft angle is equal to or greater than 17 degrees in each of all the clubs 41 to 45.
申请公布号 US9387372(B2) 申请公布日期 2016.07.12
申请号 US201414495599 申请日期 2014.09.24
申请人 DUNLOP SPORTS CO. LTD. 发明人 Hayashi Kazuhiro
分类号 A63B53/04;A63B53/00;A63B53/02 主分类号 A63B53/04
代理机构 Birch, Stewart, Kolasch & Birch, LLP 代理人 Birch, Stewart, Kolasch & Birch, LLP
主权项 1. A golf club set comprising a plurality of golf clubs having different club lengths, wherein each of the golf clubs includes a head, a shaft, and a grip, the club length of each of the clubs is 38.5 inches or greater and 42 inches or less; face progression is substantially constant, if a moment of inertia of the head about an axis line of the shaft is defined as MI, an MI difference ratio between the adjacent clubs is equal to or less than 3%, the number of the golf clubs in the golf club set is equal to or greater than 3, a difference between a maximum value and a minimum value of a face progression FP is equal to or less than 1 mm, in all heads of the plurality of golf clubs, a loft angle is equal to or greater than 20 degrees, wherein each of the heads includes a face, the face includes a thick part, the thick part includes thick part middle point, wherein if a height of the thick part middle point is defined as H2 the H2 is increased as the club length is decreased, and all heads of the plurality of golf clubs are hollow.
地址 Kobe-Shi JP