Amusement devices: games – Aerial projectile game; game element or accessory therefor... – Target
Patent
1976-01-09
1977-06-07
Grieb, William H.
Amusement devices: games
Aerial projectile game; game element or accessory therefor...
Target
273 58C, A63B 6938
Patent
active
040278808
ABSTRACT:
A captive ball device or apparatus for practice purposes in sports, particularly the various forms of tennis, comprising: a captive ball; relatively inelastic, high strength, high hardness, medium or average cut-growth rate cords attached to the captive ball; and relatively elastic, lower strength, low hardness, high cut-growth rate cords, the ends of which are attached to the ends of the relatively inelastic, high strength cords, the other ends of the relatively elastic, lower strength cords being adapted to be secured to poles or other vertical supports at a predetermined, yet variable, height above the ground or floor and at a predetermined, yet variable, distance from the captive ball. Alternatively, the relatively inelastic, high strength cords and the relatively elastic, lower strength cords may be replaced by extremely high elastic, very high strength, average or medium hardness, low cut-growth rate cords which extend from one pole or vertical support to the captive ball and then from the captive ball to the other pole or other vertical support.
REFERENCES:
patent: 708573 (1902-09-01), Miles
patent: 831605 (1906-09-01), Doyle
patent: 861506 (1907-07-01), Doyle
patent: 1708796 (1929-04-01), Lawrence
patent: 3042401 (1962-07-01), Denegre
patent: 3310306 (1967-03-01), Burt
Grieb William H.
Idex Corporation
Kardos Alexander T.
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