Solid golf ball
AssigneeSumitomo Rubber Industries, Ltd.
InventorTadahiro Ebisuno
Life of this patent
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Abstract
Disclosed is a solid golf ball (including a one piece solid golf ball and another type solid golf ball) which has excellent durability and a high impact resilience, as well as good feeling when struck. The solid golf ball of the present invention is characterized in that a hardness (H) of a rubber portion of the solid golf ball, when measured by a JIS-C hardness meter, decreases with distance from the surface to the center and satifies the following equation; When 0.ltoreq.l.ltoreq.5 416-6l.ltoreq.5H.ltoreq.440-6l When 5<l.ltoreq.r 77.ltoreq.H.ltoreq.82 wherein l is a distance in mm from the surface and r is the radius of the golf ball.
Claims10
A solid golf ball comprising rubber, wherein a hardness (H) of the rubber portion of the solid golf ball, when measured by a JIS-C hardness meter, decreases with distance from the surface to the center and satisfies the following relationships:
- when 0.ltoreq.l.ltoreq.5, then 415-6 l.ltoreq.5 H.ltoreq.440-6 l;
- and
- when 5<l.ltoreq.r, then 77.ltoreq.H.ltoreq.82,
- wherein l represents the distance in mm from the surface and r represents the radius of the golf ball.
Dependencies are inferred from the claim text.