Practice tennis ball and apparatus

Details Practice tennis ball and apparatus Practice tennis ball and apparatus

1975-06-30

1977-12-27

Grieb, William H.

Amusement devices: games

Aerial projectile game; game element or accessory therefor...

Target

273 29A, 273 58BA, 273 61B, A63B 3712

Patent

active

040651266

ABSTRACT:
A practice tennis ball and apparatus including a soft spherical member comprising a sewn cotton jacket enclosing a soft, cotton thread waste interior. A knit cover overfits the sewn jacket and may receive a marking powder suitable to removably indicate a contact upon a surface when the ball is in play. The knit cover removably overfits the sewn jacket to facilitate insertion of additional applications of marking powder. The apparatus includes targets in form suitable for application upon a vertical surface to receive the soft, pliable ball as it is propelled by a tennis racket.

REFERENCES:
patent: 532700 (1895-01-01), Davids
patent: 600967 (1898-03-01), Mead
patent: 929013 (1909-07-01), Reach
patent: 978250 (1910-12-01), Whitleg
patent: 2105861 (1938-01-01), Klecka
patent: 2242455 (1941-05-01), Beer
patent: 2257252 (1941-09-01), Vorbusch
patent: 2278292 (1942-03-01), Voit et al.
patent: 2772882 (1956-12-01), Anson
patent: 2815211 (1957-12-01), Grandinette
patent: 2925273 (1960-02-01), Pratt
patent: 3428314 (1969-02-01), Haines et al.
patent: 3563544 (1971-02-01), Hedrick

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