A golf club head includes a heel portion, a toe portion, a hosel, and a striking face. The striking face includes a plurality of scorelines each having an average depth no less than about 0.10 mm, a plurality of first micro-grooves each having an average depth no greater than about 0.010 mm, and a p
A golf club head includes a heel portion, a toe portion, a hosel, and a striking face. The striking face includes a plurality of scorelines each having an average depth no less than about 0.10 mm, a plurality of first micro-grooves each having an average depth no greater than about 0.010 mm, and a plurality of second micro-grooves overlaid on the first micro-grooves, each of the second micro-grooves having an average depth greater than the average depth of the first micro-grooves. Some embodiments can also have a plurality of textured surface treatment regions superimposed on the overlaid first and second micro-grooves so as to at least partially intersect the micro-grooves.
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1. A golf club head comprising: a heel portion;a toe portion opposite the heel portion;a hosel adapted to receive a shaft;a striking face, the striking face including: a plurality of score lines each having an average depth no less than about 0.10 mm;a first micro-groove pattern comprising a plurali
1. A golf club head comprising: a heel portion;a toe portion opposite the heel portion;a hosel adapted to receive a shaft;a striking face, the striking face including: a plurality of score lines each having an average depth no less than about 0.10 mm;a first micro-groove pattern comprising a plurality of arcuate first micro-grooves, each of the first micro-grooves having a first average depth no greater than about 0.025 mm and a first average width no greater than about 0.51 mm, the first micro-grooves being substantially parallel to one another; anda second micro-groove pattern comprising a plurality of arcuate second micro-grooves, each of the second micro-grooves having a second average depth no greater than about 0.025 mm and a second average width different than the first average width, the second arcuate grooves being parallel to one another,wherein the second micro-groove pattern is overlaid onto the first micro-groove pattern; anda rear surface opposite the striking face. 2. A golf club head as in claim 1, wherein the second average depth is greater than the first average depth. 3. A golf club head as in claim 2, wherein the second average depth is 1.2-2 times the first average depth. 4. A golf club head as in claim 1, wherein the second average width is greater than the first average width. 5. A golf club head as in claim 1, wherein the second arcuate micro-grooves are parallel to the first arcuate micro-grooves. 6. A golf club head as in claim 5, wherein, when the golf club head is oriented in a reference position, the first arcuate micro-grooves and the second arcuate micro-grooves form upwardly convex paths. 7. A golf club head as in claim 1, wherein the second micro-grooves are spaced from each other by a distance no less than about 0.2 in. 8. A golf club head as in claim 1, additionally comprising a third micro-groove pattern comprising a plurality of arcuate third micro-grooves, each of the third micro-grooves having a third average width greater than the first average width, the third micro-grooves each being parallel to one another and not parallel to at least one of the first and second micro-grooves. 9. A golf club head as in claim 1, wherein the striking face additionally comprises a plurality of surface treatment regions overlaid onto the first and second micro-groove patterns. 10. A golf club head as in claim 9, wherein the plurality of surface treatment regions comprise heat-treated regions. 11. A golf club head as in claim 9, wherein the plurality of surface treatment regions comprise laser etched regions. 12. A golf club head as in claim 9, wherein each of the surface treatment regions extends along a generally linear path. 13. A golf club head as in claim 9, wherein the striking face further comprises an uppermost point, when the club head is oriented in a reference position, and the surface treatment regions at least partially extend further toe-ward than the uppermost point. 14. A golf club head as in claim 9, wherein the surface treatment regions are irregular in cross-section. 15. A golf club head as in claim 1, wherein the striking face has a surface roughness Ra within a range of about 0.0030 mm (120 μin.) and about 0.0047 mm (185 μin). 16. A golf club head as in claim 1, wherein the club head has a loft angle of at least 18°. 17. A golf club head comprising: a heel portion;a toe portion opposite the heel portion;a hosel adapted to receive a shaft;a striking face, the striking face including: a plurality of score lines each having an average depth no less than about 0.10 mm;a first micro-groove pattern comprising a plurality of arcuate first micro-grooves, each of the first micro-grooves having a first cross-sectional profile defining a first average depth no greater than about 0.025 mm and a first average width no greater than about 0.51 mm, the first micro-grooves being parallel to one another; anda second micro-groove pattern comprising a plurality of second micro-grooves, each of the second micro-grooves having a second cross-sectional profile defining a second average depth no greater than about 0.025 mm and a second average width no greater than about 0.51 mm, the second arcuate grooves being parallel to one another,wherein the second micro-groove pattern is overlaid onto the first micro-groove pattern; andwherein the first cross-sectional profile is different from the second cross-sectional profile; anda rear surface opposite the striking face. 18. A golf club head as in claim 17, additionally comprising a third micro-groove pattern comprising a plurality of arcuate third micro-grooves, each of the third micro-grooves having a third average width different than the first average width, the third micro-grooves each being substantially parallel to one another and not substantially parallel to at least one of the first micro-grooves and the second micro-grooves. 19. A golf club head as in claim 17, wherein the striking face has a surface roughness Ra within a range of about 0.0030 mm (120 μin.) and about 0.0047 mm (185 μin). 20. A golf club head as in claim 17, wherein the striking face additionally comprises a plurality of surface treatment regions overlaid onto the first and second micro-groove patterns. 21. A golf club head as in claim 20, wherein the plurality of surface treatment regions comprise heat-treated regions. 22. A golf club head as in claim 20, wherein the plurality of surface treatment regions comprise laser etched regions. 23. A golf club head as in claim 20, wherein each of the surface treatment regions extends along a generally linear path. 24. A golf club head as in claim 20, wherein the striking face further comprises an uppermost point when the club head is oriented in a reference position and the surface treatment regions at least partially extend further toe-ward than the uppermost point. 25. A golf club head as in claim 20, wherein the surface treatment regions are irregular in cross-section. 26. A golf club head as in claim 17, wherein the club head has a loft angle of at least 18°. 27. A method of making a golf club head comprising: providing a club head main body including a striking face; andforming a first textured surface pattern in the striking face, the first textured surface pattern imparting a surface roughness value to the striking face, wherein forming the first texture surface pattern comprises: forming a first micro-groove pattern comprising a plurality of arcuate first micro-grooves that are substantially parallel to one another, each of the first micro-grooves having a first cross-sectional profile that defines a first average depth and a first average width; andforming, by superimposing onto the first micro-groove pattern, a second micro-groove pattern comprising a plurality of arcuate second micro-grooves that are substantially parallel to one another, each of the second micro-grooves having a second cross-sectional profile that defines a second average depth and a second average width,wherein the first cross-sectional profile is different from the second cross-sectional profile. 28. A method as in claim 27, wherein forming the first micro-groove pattern comprises mechanically milling the first micro-grooves using a first milling bit set at a first milling depth, and milling at a first feed rate. 29. A method as in claim 28, wherein forming the second micro-groove pattern comprises mechanically milling the second micro-grooves using a second milling bit set at a second milling depth, and milling at a second feed rate, wherein the second milling depth is deeper than the first milling depth and the second feed rate is greater than the first feed rate. 30. A method as in claim 27, further comprising forming a second textured surface pattern, superimposed on the first textured surface pattern, by laser etching the second textured surface pattern. 31. A method as in claim 30, wherein prior to forming the second textured surface pattern, the striking face has a first maximum peak-to-trough dimension, Rt1, and after forming the second textured surface pattern, the striking face has a second maximum peak-to-trough dimension, Rt2, wherein Rt2>Rt1. 32. A method as in claim 27, wherein forming the first and second micro-groove patterns comprises stamping the first and second micro-groove patterns on the striking face. 33. A method as in claim 27, wherein: the striking face defines a striking face plane; andat least one of forming the first micro-groove pattern and forming the second micro-groove pattern comprises mechanical milling in a cutting plane that is angularly offset from the striking face plane.
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이 특허에 인용된 특허 (27)
Hettinger Ronald K. ; Morris Thomas C. ; Pond Brian R., Configured face insert for golf club head.
Lyon Herbert W. (Escondido CA) Abrain Edmond S. (Warren RI) Jepson John W. (Marion MA) Rambo Charles D. (Escondido CA) Santy Arthur F. (Escondido CA), Golf club head.
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