Golf club head

摘要

This invention provides a golf club head in which a plurality of scorelines are formed in its face surface at an equal pitch. Rounded portions are formed on the edges of the scorelines. Each region between adjacent scorelines includes a fine groove formation region in which N (N≧2) fine grooves are formed to extend parallel to the scorelines and to align themselves in a direction perpendicular to the scorelines at an interval d (d≧0). Letting S be the distance between the endpoints of the rounded portions of the adjacent scorelines, Wt be the sum total of the widths of all the fine grooves, A1 be the distance from the endpoint of the rounded portion of one scoreline of the adjacent scorelines to the fine groove formation region, A2 be the distance from the endpoint of the rounded portion of the other scoreline of the adjacent scorelines to the fine groove formation region, and Wmax be the maximum width of the widths of the fine grooves, 0≦A1+A2

主权项

1. A golf club head comprising a plurality of scorelines are formed in a face surface thereof at an equal pitch, wherein
rounded portions are formed on edges of the scorelines, each region between adjacent scorelines includes a fine groove formation region in which N (N≧2) fine grooves are formed to extend parallel to the scorelines and to align themselves in a direction perpendicular to the scorelines at an interval d (d≧0), and letting S be a distance between endpoints of the rounded portions of the adjacent scorelines, Wt be a sum total of widths of all the fine grooves, A1 be a distance from the endpoint of the rounded portion of one scoreline of the adjacent scorelines to the fine groove formation region, A2 be a distance from the endpoint of the rounded portion of the other scoreline of the adjacent scorelines to the fine groove formation region, and Wmax be a maximum width of the widths of the fine grooves,
0≦A1+A2