NONCONFORMING ANTI-SLICE BALL
A non-conforming golf ball has a plurality of dimples formed on the outer surface of the ball in a predetermined dimple pattern, the outer surface comprising one or more first areas which include a plurality of first dimples which together have a first dimple volume and at least one second area having a dimple volume less that the first dimple volume, the first and second areas being configured to establish a preferred spin axis. The second area may be a band around the equator which has a lower dimple volume or no dimples, with the polar regions have a higher volume of dimples, creating a preferred spin axis through the poles.
1 . A golf ball mold having an outer surface that comprise a plurality of bumps configured to form a plurality of dimples on the outer surface of a golf ball made using the tool, the mold surface comprising one or more first areas which include a plurality of first bumps which together produce a first dimple volume and at least one second area that will produce a dimple volume less that the first dimple volume, the first and second areas being configured to establish a Motion of Inertia (MOI) difference of at least 0.100 percent and a gyroscope center plane for the golf ball such that the gyroscopic center plane does not go through all of the areas.
2 . The golf ball mold of claim 1 , wherein the bumps are configured to produce a MOI difference in the range of about 0.100 to about 0.500 percent.
3 . The golf ball mold of claim 1 , wherein the bumps are configured to produce a MOI difference in the range of about 0.200 to about 0.500 percent.
4 . The golf ball mold of claim 1 , wherein the bumps are configured to produce a MOI difference in the range of about 0.250 to about 0.500 percent.
5 . The golf ball mold of claim 1 , wherein the bumps are configured to produce a MOI difference greater than about 0.200 percent.
6 . The golf ball mold of claim 1 , wherein the bumps are configured to produce a MOI difference greater than about 0.300 percent.
7 . The golf ball mold of claim 1 , wherein the humps are configured to produce a MOI difference greater than about 0.400 percent.
8 . The golf ball mold of claim 1 , wherein the MOI difference is calculated as the maximum moment of inertia for the golf ball minus the minimum moment of inertia divided by the maximum moment of inertia.
9 . The golf ball mold of claim 8 , wherein the first and second areas are configured to establish a preferred spin axis for the golf ball, and wherein the MOI is achieved when the ball is oriented so that it will spin around its preferred spin axis.
10 . The golf ball mold of claim 9 , wherein the minimum moment of inertia is achieved when the ball is not oriented such that it will spin around its preferred spin axis.
11 . The golf ball mold of claim 9 , wherein the orientation that produces spin around the preferred spin axis is the Poles Horizontal (PH) orientation.