Amusement devices: games – Aerial projectile game; game element or accessory therefor... – Projectile backstop
Patent
1989-06-23
1990-08-14
Grieb, William H.
Amusement devices: games
Aerial projectile game; game element or accessory therefor...
Projectile backstop
273 29BB, 403104, A63B 6102, F16B 714
Patent
active
049481495
ABSTRACT:
A net post for ball games comprising primarily a plurality of hollow tubes which are of different diameters and can be fitted one over the other is disclosed. An adaptor comprising an outer screwed sleeve member and a lining press member is provided for the connection of two hollow tubes. A slidable threading lug is fitted over each of the hollow tubes. By fitting the hollow tubes one over the other, the net posts of the present invention can be reduced in dimensions to facilitate storage, shipment and carrying and can also facilitate adjustment and operation. Moreover, the installation of the net posts and the height adjustment of the net for use are facilitated by the provision of the threading lugs.
REFERENCES:
patent: 2841425 (1958-07-01), Oeters
patent: 3724885 (1973-04-01), Becker
patent: 4720112 (1988-01-01), Stettner et al.
patent: 4732395 (1988-03-01), Halverson
Liao Grace
Lin Joe
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