Golf club head
AssigneeK.K. Endo Seisakusho
InventorsJunichi Amano, Toru Tamaki
Life of this patent
Estimating the term…
Abstract
There is provided a golf club head capable of reliably preventing a backspin rate from varying in rainfall. A plurality of fine grooves are formed on a face surface 2. When observing a cross-sectional surface perpendicular to the face surface 2 involving a vertical line passing through the center G of gravity of the golf club head 1 with the golf club head 1 set at preset loft and lie angles, an average width of the fine grooves 4 in the cross-sectional surface is 100 μm or less and an average pitch thereof in the cross-sectional surface is 100 μm or less. Hence, the discharge of water can be accelerated by a capillary phenomenon, making it possible to reliably prevent a backspin rate of a golf ball from varying in rainfall.
Claims18
A golf club head comprising:
- a plurality of fine grooves formed on a face surface thereof, said fine grooves having an average width of 100 μm or less in a cross-sectional surface perpendicular to said face surface and an average pitch of 100 μm or less in the cross-sectional surface, when the cross-sectional surface perpendicular to said face surface involving a vertical line passing through the center of gravity of said golf club head is observed, with said golf club head set at preset loft and lie angles.
Dependencies are inferred from the claim text.