Invention Grant
- Patent Title: Golf ball
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Application No.: US13479326Application Date: 2012-05-24
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Publication No.: US09656125B2Publication Date: 2017-05-23
- Inventor: Hirotaka Nakamura
- Applicant: Hirotaka Nakamura
- 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: JP2011-143656 20110629
- Main IPC: A63B37/12
- IPC: A63B37/12 ; A63B37/00

Abstract:
A golf ball 2 has, on a surface thereof, a plurality of types of dimples 8 having different diameters from each other. A standard deviation Vσ of the volumes of all the dimples 8 is equal to or less than 0.095 mm3. The ratio (Vσ/Dσ) of the standard deviation Vσ to a standard deviation Dσ of the diameters of all the dimples 8 is equal to or less than 0.35. Preferably, the shape of each dimple 8 is a portion of a spherical surface. The standard deviation Vσ is preferably equal to or less than 0.087 mm3. The ratio (Vσ/Dσ) is preferably equal to or less than 0.29.
Public/Granted literature
- US20130005509A1 GOLF BALL Public/Granted day:2013-01-03
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