Invention Grant
- Patent Title: Golf ball
- Patent Title (中): 高尔夫球
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Application No.: US13430764Application Date: 2012-03-27
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Publication No.: US08951147B2Publication Date: 2015-02-10
- Inventor: Satoko Okabe , Takahiro Sajima , Yoshiko Matsuyama
- Applicant: Satoko Okabe , Takahiro Sajima , Yoshiko Matsuyama
- Applicant Address: JP Kobe
- Assignee: SRI Sports Limited
- Current Assignee: SRI Sports Limited
- Current Assignee Address: JP Kobe
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2011-070626 20110328
- Main IPC: A63B37/06
- IPC: A63B37/06 ; A63B37/00

Abstract:
An object of the present invention is to provide a golf ball having an improved controllability and shot feeling while maintaining a flight distance on driver shots. The present invention provides a golf ball having a core, an intermediate layer disposed around the core, and a cover disposed around the intermediate layer, wherein the core has a center and an envelope layer disposed around the center, and has a specific hardness distribution, and the intermediate layer is formed from an intermediate layer composition comprising, as a resin component, (A) a modified polyester elastomer and (B) a binary ionomer resin, and having a flexural modulus ranging from 150 MPa to 450 MPa, a maximum loss factor (tan δ) between −20° C. and 0° C. of 0.08 or less, a repulsive modulus of 55% or more, and a slab hardness ranging from 60 to 90 in JIS-hardness.
Public/Granted literature
- US20120252604A1 GOLF BALL Public/Granted day:2012-10-04
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