Invention Grant
- Patent Title: Golf club
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Application No.: US14848999Application Date: 2015-09-09
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Publication No.: US09776055B2Publication Date: 2017-10-03
- Inventor: Naoyoshi Ueda , Masahiko Ueda , Yasushi Sugimoto , Takashi Nakamura , Seiji Hayase , Wataru Kimizuka
- Applicant: DUNLOP SPORTS CO. LTD.
- Applicant Address: JP Kobe-Shi, Hyogo
- Assignee: DUNLOP SPORTS CO. LTD.
- Current Assignee: DUNLOP SPORTS CO. LTD.
- Current Assignee Address: JP Kobe-Shi, Hyogo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2014-184684 20140910
- Main IPC: A63B53/10
- IPC: A63B53/10 ; A63B53/00 ; A63B53/04 ; A63B53/14 ; A63B60/42 ; A63B60/02

Abstract:
A golf club 2 includes a head 4, a shaft 6, and a grip 8. A club inertia moment about a swing axis is defined as Isw. A club inertia moment about a grip end is defined as Ige. Ige is 2870 (kg·cm2) or greater and less than 2920 (kg·cm2). Isw/Ige is equal to or less than 2.46. A club weight is defined as Wc (kg), an axial direction distance from the grip end to a center of gravity of the club is defined as Lc (cm), and a club inertia moment about the center of gravity of the club is defined as Ic (kg·cm2). Isw is calculated by Equation (1) below. Ige is calculated by Equation (2) below. Isw=Wc×(Lc+60)2+Ic (1) Ige=Wc×(Lc)2+Ic (2)
Public/Granted literature
- US20160067565A1 GOLF CLUB Public/Granted day:2016-03-10
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