Game ball
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United States of America Patent
Stats
-
Apr 26, 1994
Grant Date -
N/A
app pub date -
Oct 16, 1992
filing date -
Oct 16, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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.
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