发明名称 |
Golf club |
摘要 |
A golf club 2 includes a shaft 6 and a head 4. When a shaft full length is defined as Ls, and a distance between a tip end Tp of the shaft and a center of gravity G of the shaft is defined as Lg, a ratio (Lg/Ls) is 0.52 or greater and 0.65 or less. When a club length is defined as X inch and a club weight is defined as Y gram, the golf club 2 satisfies the following relational expression (1).
Y≦−7.62X+635 (1);Preferably, the distance Lg is 615 mm or greater and 660 mm or less. Preferably, a shaft weight Ws is equal to or less than 52 g. Preferably, the club length X is equal to or less than 46 inch. |
申请公布号 |
US9079083(B2) |
申请公布日期 |
2015.07.14 |
申请号 |
US201213474242 |
申请日期 |
2012.05.17 |
申请人 |
DUNLOP SPORTS CO. LTD. |
发明人 |
Hasegawa Hiroshi;Nakano Takashi;Sugimoto Yasushi |
分类号 |
A63B53/10;A63B59/00 |
主分类号 |
A63B53/10 |
代理机构 |
Birch, Stewart, Kolasch & Birch, LLP |
代理人 |
Birch, Stewart, Kolasch & Birch, LLP |
主权项 |
1. A golf club comprising: a shaft having a tip end, a butt end and a butt partial layer; and a head,
wherein if the shaft full length is defined as Ls, and a distance between the tip end of the shaft and a center of gravity G of the shaft is defined as Lg, then Lg/Ls is 0.52 or greater and 0.65 or less; and wherein if a point separated by 250 mm from the butt end is defined as P2; a range from the point P2 to the butt end is defined as a specific butt range; a weight of the butt partial layer existing in the specific butt range is defined as Wa; and a weight of the shaft in the specific butt range is defined as Wb, then Wa/Wb is 0.4 or greater and 0.7 or less; and if the club length is defined as X inches and the club weight is defined as Y grams, the following relational expression (1) is satisfied:
Y≦−7.62X+635 (1). |
地址 |
Kobe-Shi JP |