Golfball

Details

Veröffentlichungs-Nr.

EP2656882

Aktenzeichen

EP13164343

Anmeldetag

18. April 2013

Veröffentlichung

9. Juni 2021

Erteilung

9. Juni 2021

Rechtsraum

EP

IPC

A63B37/00

Abstract

A golf ball 2 includes a spherical core 4, an inner mid layer 6, an outer mid layer 8, a reinforcing layer 10, and a cover 12. When distances (%) from a central point of the core 4 to nine points and JIS-C hardnesses at the nine points, which nine points are obtained by dividing a region from the central point of the core 4 to a surface of the core 4 at intervals of 12.5% of a radius of the core 4, are plotted in a graph, R 2 of a linear approximation curve obtained by a least-square method is equal to or greater than 0.95. Hm1 is greater than Hm2. Hc is less than Hm1. T2 is equal to or greater than 0.5 mm but equal to or less than 1.6 mm.

Anmelder

Firmen

Sumitomo Rubber Industries, Ltd.
Dunlop Sports Co., Ltd.

Land

🇯🇵 Japan

Fachgebiete