Invention Grant
- Patent Title: Golf ball
-
Application No.: US14981418Application Date: 2015-12-28
-
Publication No.: US10279222B2Publication Date: 2019-05-07
- Inventor: Kazuya Kamino , Kosuke Tachibana
- Applicant: Dunlop Sports Co., 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: JP2014-266657 20141226
- Main IPC: A63B37/06
- IPC: A63B37/06 ; A63B37/00

Abstract:
An object of the present invention is to provide a golf ball traveling a great flight distance on driver shots and an excellent shot feeling. The present invention provides a golf ball comprising a spherical core, an intermediate layer covering the spherical core, and a cover covering the intermediate layer, wherein a material hardness (Hm) of a resin composition constituting the intermediate layer ranges from 65 to 80 in Shore D hardness, a material hardness (Hc) of a resin composition constituting the cover ranges from 57 to 72 in Shore D hardness, a hardness difference (Hm−Hc) between the material hardness (Hm) and the material hardness (Hc) is more than 0, and the intermediate layer has a surface hardness satisfying a hardness difference (HmsC−HmsD) between a hardness thereof shown in Shore C hardness (HmsC) and a hardness thereof shown in Shore D hardness (HmsD) of 27 or less.
Public/Granted literature
- US20160184658A1 GOLF BALL Public/Granted day:2016-06-30
Information query