Invention Grant
- Patent Title: Golf ball
- Patent Title (中): 高尔夫球
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Application No.: US14749200Application Date: 2015-06-24
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Publication No.: US09555289B2Publication Date: 2017-01-31
- Inventor: Kohei Mimura , Takahiro Sajima , Hyoungchol Kim , Masahide Onuki
- 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: JP2014-129815 20140625
- Main IPC: A63B37/06
- IPC: A63B37/06 ; A63B37/00

Abstract:
A golf ball has a large number of dimples on a surface thereof. The golf ball meets the following mathematical formula (I): 1.320≦L1≦1.420 (I), where L1 represents a ratio of a lift coefficient CL1 which is measured under conditions of a Reynolds number of 1.290×105 and a spin rate of 2820 rpm, relative to a lift coefficient CL2 which is measured under conditions of a Reynolds number of 1.290×105 and a spin rate of 1740 rpm.
Public/Granted literature
- US20150375049A1 GOLF BALL Public/Granted day:2015-12-31
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