Invention Grant
- Patent Title: Golf ball
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Application No.: US14754156Application Date: 2015-06-29
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Publication No.: US10207155B2Publication Date: 2019-02-19
- Inventor: Takahiro Shigemitsu , Hidetaka Inoue
- 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: JP2014-135404 20140630; JP2014-135409 20140630; JP2015-099147 20150514; JP2015-099151 20150514
- Main IPC: A63B37/06
- IPC: A63B37/06 ; A63B37/00

Abstract:
An object of the present invention is to provide a golf ball showing a low spin rate on driver shots and a high spin rate on approach shots. The present invention provides a golf ball comprising a spherical center, at least two envelope layers covering the spherical center, and a cover covering the envelope layers, wherein an envelope layer (Es1) formed from a material having a lowest material hardness among a center constituent material and envelope layers constituent materials, is disposed in a region located at a distance from 36.0% to 65.0% of a golf ball radius from a center point of the golf ball.
Public/Granted literature
- US20150375055A1 GOLF BALL Public/Granted day:2015-12-31
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