Patent ID: 6402639
Filing Date: 2002-06-11
Classification: A63B

Abstract:
A metal wood club head of a hollow hull structure comprising a face part (2), a back part (9), a crown part (3) forming an upper portion from said face part (2) to said back part (9) and a sole part (4) forming a lower portion from said face part (2) to said back part (9), whereinthe vertical difference between a maximum face part height (MFH) from said sole part (4) and a back part height (BH) from said sole part (4) is at least within 25 mm, the height of said crown part (3) having a width of 30% to 70% of a head width from said sole part (4) is substantially identical to said maximum face part height (MFH) or more than that, and the vertical difference between a maximum crown part height (MCH) from said sole part (4) and said maximum face part height (MFH) is at least within 8 mm, said metal wood club head setting the radius (R1) of curvature of said crown part (3) substantially uniformly within the range of 100 mm to 1000 mm while setting the radius (R2) of curvature of said sole part (4) substantially uniformly within the range of 500 mm to 2000 mm, and setting the ratio of thicknesses of said crown part (3) and said sole part (4) within the range of 1.0 to 1.2.