Multi-layer softball
View Patent ↗The present invention relates to softballs that have very low compression, but maintain the traditional COR values of standard urethane core softballs. The present invention comprises a softball having a center core and at least one core or mantle layer to produce a softball having the performance of a traditional ball.
1. A softball comprising:
a composite core comprising (1) a central core having a first hardness, and (2) a first outer core layer adjacent the central core, the first outer core layer having a second hardness less than the first hardness; and
a cover surrounding the composite core,
the softball having a compression of about 400 lbs. or less and a coefficient of restitution of from about 0.400 to about 0.500 at 88 feet/second.
2. The softball according to claim 1 , wherein the central core comprises a first urethane composition.
3. The softball according to claim 1 , wherein the first outer core comprises a second urethane composition.
4. The softball according to claim 1 , wherein the composite core further comprises a second outer core layer adjacent the first outer core layer, the second outer core having a third hardness.
5. The softball according to claim 4 , wherein the third hardness is greater than the second hardness.
6. The softball according to claim 4 , wherein the third hardness is less than the second hardness.
7. The softball according to claim 1 , wherein the softball has a compression of about 375 lbs. or less.
8. The softball according to claim 1 , wherein the softball has a compression of about 325 lbs. or less.
9. The softball according to claim 1 , wherein the softball has a compression of about 200 lbs. or less.
10. The softball according to claim 1 , wherein the central core comprises a first urethane composition, and the first outer core layer comprises a second urethane composition.
11. The softball according to claim 10 , further comprising a second outer core layer adjacent the first outer core layer, the second outer core layer comprising a third urethane composition and having a third hardness.
12. The softball according to claim 11 , wherein the third hardness is greater than the second hardness.
13. The softball according to claim 11 , wherein the third hardness is less than the second hardness.