EP 2656882 B1 20210609 - Golf ball
Title (en)
Golf ball
Title (de)
Golfball
Title (fr)
Balle de golf
Publication
Application
Priority
- JP 2012099641 A 20120425
- JP 2012116542 A 20120522
- JP 2012118422 A 20120524
- JP 2012118544 A 20120524
- JP 2012124249 A 20120531
- JP 2012124924 A 20120531
Abstract (en)
[origin: EP2656882A1] 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.
IPC 8 full level
A63B 37/00 (2006.01)
CPC (source: EP US)
A63B 37/0054 (2013.01 - US); A63B 37/0059 (2013.01 - EP US); A63B 37/0063 (2013.01 - EP US); A63B 37/0092 (2013.01 - EP US); A63B 37/0043 (2013.01 - EP US); A63B 37/0044 (2013.01 - EP US); A63B 37/0076 (2013.01 - EP US)
Citation (examination)
- US 2010273575 A1 20101028 - WATANABE HIDEO [JP]
- US 7850548 B2 20101214 - WATANABE HIDEO [JP], et al
- US 2008146377 A1 20080619 - WATANABE HIDEO [JP]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2656882 A1 20131030; EP 2656882 B1 20210609; CN 103372285 A 20131030; CN 103372285 B 20160420; EP 3329971 A1 20180606; EP 3329971 B1 20201118; US 2013288824 A1 20131031; US 2017304684 A1 20171026
DOCDB simple family (application)
EP 13164343 A 20130418; CN 201310146454 A 20130424; EP 17192516 A 20130418; US 201313827803 A 20130314; US 201715649273 A 20170713