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Machine translation
1. (WO1992000125) TENNIS BALL TO LINE LOCATION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1992/000125    International Application No.:    PCT/AU1991/000278
Publication Date: 09.01.1992 International Filing Date: 27.06.1991
Chapter 2 Demand Filed:    15.01.1992    
IPC:
A63B 43/00 (2006.01), A63B 71/06 (2006.01)
Applicants: CALDONE PTY LIMITED [AU/AU]; 26 Fitzroy Avenue, Camden Park, S.A. 5038 (AU) (For All Designated States Except US).
CANDY, Bruce, Halcro [AU/AU]; (AU) (For US Only)
Inventors: CANDY, Bruce, Halcro; (AU)
Agent: COLLISON & CO.; 117 King William Street, Adelaide, S.A. 5000 (AU)
Priority Data:
PK 0830 27.06.1990 AU
Title (EN) TENNIS BALL TO LINE LOCATION
(FR) REPERAGE DE LA POSITION D'UNE BALLE DE TENNIS PAR RAPPORT A UNE LIGNE
Abstract: front page image
(EN)A means and arrangement to assist in determining the location of a ball relative to a line on a game surface is disclosed. The arrangement utilizes transmit and receive coils buried beneath lines on a game surface. Overlapping transmit coils operate at different frequencies and include filtering means to make each transmit coil substantially independent of the other transmit coil.
(FR)Dispositif et agencement servant à déterminer la position d'une balle par rapport à une ligne sur une surface de jeu. L'agencement utilise des bobines émettrices et réceptrices enfouies sous les lignes de la surface de jeu. Des bobines émettrices qui se chevauchent fonctionnent sur de différentes fréquences et comprennent des éléments de filtrage rendant chaque bobine émettrice pratiquement indépendante de l'autre bobine émettrice.
Designated States: AT, AU, BB, BG, BR, CA, CH, DE, DK, ES, FI, GB, HU, JP, KP, KR, LK, LU, MC, MG, MW, NL, NO, PL, RO, SD, SE, SU, US.
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)