EP 4218963 A1 20230802 - GOLF BALL
Title (en)
GOLF BALL
Title (de)
GOLFBALL
Title (fr)
BALLE DE GOLF
Publication
Application
Priority
JP 2022013356 A 20220131
Abstract (en)
A golf ball 2 having excellent flight performance upon a shot with a fairway wood is provided. The golf ball 2 has a large number of dimples 8 on a surface thereof. A trajectory of the golf ball 2 calculated under conditions of an initial speed of 260 ft/s, a launch angle of 15.0 degrees, and an initial backspin rate of 3000 rpm satisfies the following mathematical formula. Amin≥−5.0*Vave−38.98, wherein Amin represents a minimum value (degree) of a vector angle A in the trajectory, and Vave represents an average volume (mm<sup>3</sup>) of the dimples 8. The vector angle A is calculated by the following mathematical formula. A=ATANVy/Vx, wherein Vx represents a horizontal component of a speed of the golf ball 2, and Vy represents a vertical component of the speed of the golf ball 2.
IPC 8 full level
A63B 37/00 (2006.01); A63B 24/00 (2006.01); A63B 47/00 (2006.01)
CPC (source: EP KR US)
A63B 37/0006 (2013.01 - KR US); A63B 37/0012 (2013.01 - KR); A63B 37/0016 (2013.01 - EP); A63B 37/0017 (2013.01 - KR); A63B 37/0018 (2013.01 - EP KR US); A63B 37/002 (2013.01 - KR); A63B 37/0021 (2013.01 - KR); A63B 37/00215 (2020.08 - US); A63B 37/0084 (2013.01 - EP); A63B 37/0089 (2013.01 - KR); A63B 37/009 (2013.01 - KR); A63B 37/0006 (2013.01 - EP); A63B 37/0012 (2013.01 - EP US); A63B 37/0019 (2013.01 - EP); A63B 37/002 (2013.01 - EP); A63B 37/0021 (2013.01 - US); A63B 37/0074 (2013.01 - US); A63B 47/008 (2013.01 - EP); A63B 2024/0034 (2013.01 - EP)
Citation (applicant)
- JP 2014140638 A 20140807 - DUNLOP SPORTS CO LTD
- "Science and Golf IV, Chapter 30, A Generally Applicable Model for the Aerodynamic Behavior of Golf Balls", 2002, article "S. J. Quintavalla of the United States Golf Association and disclosed"
Citation (search report)
[X] JP 2003210613 A 20030729 - SUMITOMO RUBBER IND
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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4218963 A1 20230802; JP 2023111481 A 20230810; KR 20230117511 A 20230808; US 2023241460 A1 20230803
DOCDB simple family (application)
EP 23151334 A 20230112; JP 2022013356 A 20220131; KR 20230002778 A 20230109; US 202318103509 A 20230131