The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 17, 2015
Filed:
Jun. 23, 2011
Hirotaka Nakamura, Kobe, JP;
Kazuhiko Isogawa, Kobe, JP;
Seiichiro Endo, Kobe, JP;
Hyoungchol Kim, Kobe, JP;
Hirotaka Nakamura, Kobe, JP;
Kazuhiko Isogawa, Kobe, JP;
Seiichiro Endo, Kobe, JP;
Hyoungchol Kim, Kobe, JP;
SRI Sports Limited, Kobe, JP;
Abstract
A golf ballincludes a spherical coreand a coverpositioned outside the core. The golf ballfurther has dimpleson a surface thereof. The coreis obtained by crosslinking a rubber composition. The difference between a hardness H(5.0) at a point that is located at a distance of 5 mm from the central point of the core, and a hardness Ho at the central point is equal to or greater than 6.0. The difference between a hardness H(12.5) at a point that is located at a distance of 12.5 mm from the central point, and the hardness H(5.0) is equal to or less than 4.0. The difference between a hardness Hs at the surface of the coreand the hardness H(12.5) is equal to or greater than 10.0. The difference between the hardness Hs and the hardness Ho is equal to or greater than 22.0. There is no zone in which a hardness decreases from the central point to the surface. The rubber composition of the coreincludes 2-naphthalenethiol. A cross-sectional shape of each dimpleis a wave-like curve.