Game ball
First Claim
Patent Images
1. A molded plastic game ball comprising a hollow spherical core of a mixture of a low density polyethylene and an ethylene acid copolymer.
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Accused Products
Abstract
A softball including a hollow spherical core and a leather cover. The core is formed from a mixture of low density polyethylene and ethylene acid copolymer in which the amounts of the low density polyethylene and the ethylene acid copolymer can be adjusted to vary the coefficient of restitution of the softball from 0.47 to 0.52 at a hardness of Shore D 43 to 51.
30 Citations
19 Claims
- 1. A molded plastic game ball comprising a hollow spherical core of a mixture of a low density polyethylene and an ethylene acid copolymer.
- 7. A softball comprising a molded hollow spherical core and a leather cover on the outside of the core, the softball having a coefficient of restitution within the range of 0.47 to 0.52, the core consisting essentially of a mixture of low density polyethylene and ethylene acid copolymer.
- 14. A softball comprising a molded hollow spherical core and leather cover on the outside of the core, the softball having a coefficient of restitution within the range of about 0.47 to about 0.52, the core consisting essentially of a mixture from about 40% to about 90% by weight of low density polyethylene and from about 60% to about 10% by weight ethylene acid copolymer.
Specification