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US 5,306,001 AGranted
Game ball
AssigneeMolten Corporation
InventorsHideomi Shishido, Shigeo Doi, Masanori Hirakiuchi, Hajime Okimoto
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AssigneeMolten Corporation
InventorsHideomi Shishido, Shigeo Doi, Masanori Hirakiuchi, Hajime Okimoto
Estimating the term…
A ball for ball game, comprising a base body composed of two hemispherical hollow bodies formed by injection-molding a thermoplastic elastomer and bonded together to form a spherical hollow body, said base body containing and sealing compressed air injected therein through an air-injection valve provided at an appropriate portion of one of said two hemispherical hollow bodies, and a plurality of leather panels bonded by means of an adhesive to the surface of said base body, wherein a 10% tensile stress of said thermoplastic elastomer forming said base body ranges from 30 to 190 kg/cm.sup.2. Various properties of said ball such as shock-absorptivity, shape-maintaining property, impact resilience and the like can be set within appropriate ranges.
A ball for a ball game, comprising a base body consisting essentially of two hemispherical hollow bodies formed of injection-molded thermoplastic elastomer and bonded together at peripheral edges thereof to form a spherical hollow body, compressed air sealingly contained in said base body, an air-injection valve provided at an appropriate portion of one of said two hemispherical hollow bodies and through which compressed air can be injected into the base body, and a plurality of leather panels bonded by means of an adhesive to the surface of said base body, and wherein said thermoplastic elastomer has a 10% tensile stress within the range of 30 to 190 kg/cm.sup.2.
Dependencies are inferred from the claim text.