EP 1287858 A3 20040107 - Golf club and method of producing the same
Title (en)
Golf club and method of producing the same
Title (de)
Golfschläger und Verfahren zu dessen Herstellung
Title (fr)
Club de golf et son procédé de fabrication
Publication
Application
Priority
- JP 2001258142 A 20010828
- JP 2002232574 A 20020809
Abstract (en)
[origin: EP1287858A2] A golf club includes a head formed of metal and having a face (2) with a center (2a) having an average crystal grain size smaller at a rear side than at a front side. The face (2) as seen in cross section has a first region (7a) having a relatively large average crystal grain size and a second region (7b) having a relatively small average crystal grain size. The second region (7b) extends from the center (2a) at the rear side to a periphery (2b) at the front side. <IMAGE>
IPC 1-7
IPC 8 full level
A63B 53/04 (2006.01); A63B 102/32 (2015.01)
CPC (source: EP US)
A63B 53/04 (2013.01 - EP US); A63B 53/0408 (2020.07 - EP); A63B 53/0412 (2020.07 - EP); A63B 53/0416 (2020.07 - EP); A63B 53/0458 (2020.08 - EP); A63B 53/0466 (2013.01 - EP US); A63B 60/00 (2015.10 - US); A63B 53/0408 (2020.07 - US); A63B 53/0412 (2020.07 - US); A63B 53/0416 (2020.07 - US); A63B 53/0458 (2020.08 - US); A63B 2209/00 (2013.01 - EP US)
Citation (search report)
- [XY] US 5611742 A 19970318 - KOBAYASHI KENJI [JP]
- [Y] US 5205560 A 19930427 - HOSHI TOSHIHARU [JP], et al
- [A] US 6193614 B1 20010227 - SASAMOTO AKINORI [JP], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
EP 1287858 A2 20030305; EP 1287858 A3 20040107; JP 2003144591 A 20030520; JP 3860095 B2 20061220; US 2003050134 A1 20030313
DOCDB simple family (application)
EP 02019305 A 20020828; JP 2002232574 A 20020809; US 22795602 A 20020826