Game ball

Amusement devices: games – Aerial projectile game; game element or accessory therefor... – Target

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Details

273 65C, 273 65EG, 273 58BA, 273 58J, A63B 4102, A63B 4110, A63B 4500

Patent

active

053060016

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.

REFERENCES:
patent: 3933967 (1976-01-01), Taylor
patent: 4340222 (1982-07-01), Kerkenbush et al.
patent: 4660831 (1987-04-01), Kralik
patent: 4765853 (1988-08-01), Hoffman
Database WPIL, Week 8551, Derwent Publications Ltd., London, GB AN 85-321253 & JP-A-60 225 581 (Molent) Abstract.
Dr. Saechiling `International Plastics Handbook` 1983, MacMillan Publishing Co., Inc. Chapter; Thermoplastics, pp. 154-157 and 214-216 Very Specially Table: 32, New York, US.

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