Invention Grant
- Patent Title: Golf club
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Application No.: US15849170Application Date: 2017-12-20
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Publication No.: US10307647B2Publication Date: 2019-06-04
- Inventor: Takashi Nakamura
- Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
- Applicant Address: JP Kobe-Shi, Hyogo
- Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
- Current Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
- Current Assignee Address: JP Kobe-Shi, Hyogo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2013-152337 20130723; JP2014-030570 20140220
- Main IPC: A63B53/10
- IPC: A63B53/10 ; A63B53/04 ; A63B60/00 ; A63B60/42 ; A63B53/00 ; A63B53/14

Abstract:
A club includes a head, a shaft, and a grip. A club length L1 is 43 inches or greater and 48 inches or less. A ratio (Wh/Wc) between a head weight Wh and a club weight Wc is equal to or greater than 0.70. An inertia moment Ix about swing axis is 6.90×103 (kg·cm2) or greater and 7.50×103 (kg·cm2) or less. A static moment Mt (kg·cm) of the club is equal to or greater than 16.3 (kg·cm). The frequency of vibration of club is 240 (cpm) or greater and 280 (cpm) or less. The inertia moment Ix (kg·cm2) is calculated by Equation (1): Ix=Wc×(Lc+60)2+Ic (1).
Public/Granted literature
- US20180111026A1 GOLF CLUB Public/Granted day:2018-04-26
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