EP 3292893 B1 20210609 - GOLF BALL
Title (en)
GOLF BALL
Title (de)
GOLFBALL
Title (fr)
BALLE DE GOLF
Publication
Application
Priority
- JP 2012119167 A 20120525
- JP 2012119217 A 20120525
- JP 2012121710 A 20120529
- JP 2012121943 A 20120529
- EP 13164426 A 20130419
Abstract (en)
[origin: EP2666521A1] A golf ball 2 includes a core 4, an inner cover 8, a mid cover 10, and an outer cover 12. Nine points are determined by dividing a region from a 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. When distances (%) from the central point to the nine points and hardnesses at the nine points 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. A hardness Hi of the inner cover 8 is greater than a hardness Hs at the surface of the core 4. A hardness Ho of the outer cover 12 is greater than the hardness Hi. A difference (Hi-Hs) is 1 or greater. A difference (Ho-Hi) is 5 or greater but 30 or less.
IPC 8 full level
A63B 37/00 (2006.01)
CPC (source: EP KR US)
A63B 37/00 (2013.01 - KR); A63B 37/0031 (2013.01 - EP US); A63B 37/0043 (2013.01 - EP US); A63B 37/0054 (2013.01 - US); A63B 37/0063 (2013.01 - EP US); A63B 37/0076 (2013.01 - EP US); A63B 37/0092 (2013.01 - EP KR US); A63B 37/06 (2013.01 - KR)
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 2666521 A1 20131127; EP 2666521 B1 20200902; CN 103418115 A 20131204; CN 103418115 B 20160511; EP 3292893 A1 20180314; EP 3292893 B1 20210609; KR 101444026 B1 20140923; KR 20130132304 A 20131204; US 2013316850 A1 20131128
DOCDB simple family (application)
EP 13164426 A 20130419; CN 201310198996 A 20130524; EP 17192323 A 20130419; KR 20130058157 A 20130523; US 201313829223 A 20130314