Invention Grant
- Patent Title: Golf club
- Patent Title (中): 高尔夫俱乐部
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Application No.: US14492803Application Date: 2014-09-22
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Publication No.: US09403065B2Publication Date: 2016-08-02
- Inventor: Takashi Nakamura
- Applicant: DUNLOP SPORTS CO. LTD.
- Applicant Address: JP Kobe-Shi
- Assignee: DUNLOP SPORTS CO. LTD.
- Current Assignee: DUNLOP SPORTS CO. LTD.
- Current Assignee Address: JP Kobe-Shi
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2013-196099 20130920
- Main IPC: A63B53/10
- IPC: A63B53/10 ; A63B53/00 ; A63B53/04 ; B29L31/52

Abstract:
A club 2 includes a head 4, a shaft 6 and a grip 8. A club length L1is equal to or greater than 43 inches and equal to or less than 48 inches. A frequency of the club is equal to or greater than 240 (cpm) and equal to or less than 290 (cpm). A club inertia moment Ix is equal to or greater than 6.90×103 (kg·cm2) and equal to or less than 7.50×103 (kg·cm2). A ratio Iss/Ix is equal to or greater than 0.085 and equal to or less than 0.115. The inertia moment Ix is a club inertia moment about a swing axis Zx. The moment Iss is a shaft inertia moment about the swing axis Zx.
Public/Granted literature
- US20150087435A1 GOLF CLUB Public/Granted day:2015-03-26
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