Patent ID: 7691007
Filing Date: 2010-04-06
Classification: A63B

Abstract:
1. A golf club head comprising: a plurality of grooves formed on a face of the golf club head; and each groove of said plurality of grooves including a pair of side surfaces of, each side surface having a first surface contiguous with the face and a second surface contiguous with said first surface in a depth direction of said groove, wherein a first angle between said first surfaces of each of said pair of the side surfaces is larger than a second angle between said second surfaces of each of said pair of the side surfaces, edges of said groove are rounded, wherein a width W (mm) of said groove measured including said rounded edges and a width Ws (mm) representing a distance between said adjacent grooves satisfy a formula wherein a width Wr (mm) of said groove measured based on a 30 degrees measurement rule and a cross section area S (mm