Pressureless tennis ball

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

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Details

525232, 525236, 525237, 26099814, 524908, A63B 3900

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active

052094715

ABSTRACT:
A pressureless tennis ball which has excellent rebound properties and produces a satisfactory feeling of striking retained over a long period of time, the tennis ball having a hollow spherical core made from a rubber composition containing a rubber and 5 to 60 parts by weight of polyethylene per 100 parts by weight of the rubber.

REFERENCES:
patent: 4145045 (1979-03-01), Pocklington
patent: 4306719 (1981-12-01), Haines et al.
patent: 4580781 (1986-04-01), Houriuchi et al.
patent: 4592550 (1986-06-01), Houriuchi
patent: 4848770 (1989-07-01), Shama
Patent Abstracts of Japan, unexamined applications, C field, vol. 13, No. 3, Jan. 6, 1989, The Patent Office Japanese Gov., pp. 117 C 557. Kokai-No. 63-215 746.
Patent Abstracts of Japan, unexamined applications, C field, vol. 11, No. 69, Mar. 3, 1987, The Patent Office Japanese Gov., p. 164 C 407. Kokai-no. 61-228 039.

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