Golf club head
First Claim
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
W/Ws×
100≧
40(%), andwherein a width Wr (mm) of said groove measured based on a 30 degrees measurement rule and a cross section area S (mm2) of said groove satisfy a formula
S/(Wr×
0.5)×
100≧
70(%).
3 Assignments
0 Petitions
Accused Products
Abstract
This invention provides a plurality of grooves formed on a face of the golf club head. Each of a pair of side surfaces of each of the grooves has a first surface leading to the face and a second surface leading to the first surface in the depth direction of the groove. A first angle between the first surfaces of each of said pair of the side surfaces is larger than a second angle between the second surfaces of each of the said pair of the side surfaces. Edges of the groove are rounded. A width W (mm) of the groove measured including the rounded edges, a width Ws (mm) between the grooves adjacent one another, a width Wr (mm) of the groove measured based on the 30 degrees measurement rule and a cross section area S (mm2) of the groove satisfy the following expressions; W/Ws×100≧40(%), S/(Ws×0.5)×100≧70(%).
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Citations
6 Claims
-
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
W/Ws×
100≧
40(%), andwherein a width Wr (mm) of said groove measured based on a 30 degrees measurement rule and a cross section area S (mm2) of said groove satisfy a formula
S/(Wr×
0.5)×
100≧
70(%). - View Dependent Claims (2, 3, 4, 5, 6)
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Specification