Amusement devices: games – Aerial projectile game; game element or accessory therefor... – Target
Patent
1990-08-24
1992-06-30
Brown, Theatrice
Amusement devices: games
Aerial projectile game; game element or accessory therefor...
Target
A63B 6940
Patent
active
051256541
ABSTRACT:
The invention comprises a ball retrieval arm mechanism extending from the base line to the tennis net on a tennis court and can be moved along the net. During the retrieving process, the retrieving arm moves only one time during each passage in a transverse direction over one half of the tennis court. The retrieving arm continues its movement until it reaches one side edge of the tennis court. Ball receiving channels are provided along both sides of the tennis court, into one of which the balls are thrust by the retrieving arms and transported by conveyor belts to one top end of the tennis court. The ball receiving channels have connections to a conveyor chute by which the balls are transported from the corners of the tennis court to a ball retriever placed in the middle of the top of the tennis court or to a ball retriever directly. The retrieving arm is preferably guided only at one end thereof by a guide rail extending along the top of the tennis court. A constant alignment of the retrieving arm transverse to the net and the guide rail is provided by a sensor scanning the angle between the retrieving arm and guide rail. The sensor controls electric motors driving traveling wheels of the retrieving arm to maintain a correct angle. A ball throwing machine is provided, the ball throwing machines preferably have wheels which can be automatically raised and lowered alternately to allow the retrieving arm to pass therebeneath. The ball retriever is selectively connected to the ball throwing machine or another ball receiving container.
REFERENCES:
patent: 3184239 (1965-05-01), Heuser
patent: 3203696 (1965-08-01), Sawyer
patent: 4004806 (1977-01-01), Malik
patent: 4215865 (1980-08-01), Pilati
patent: 4606543 (1986-08-01), Hartland
patent: 4938479 (1990-07-01), Jenkins et al.
Brown Theatrice
Transita Vertriebs - und Handelsgesellschaft mbH
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