ATBECH..DKESFRGB....LI............................J0500367EUROPEAN PATENT APPLICATIONA319930721EP92301401.319920220enenen91124819910220ZA19930721199329199208261992355 5G 07D 5/08 A 5G 07F 3/02 BdeSpulenanordnung und statische MessvorrichtungenCoil arrangement and static measuring devicefrAgencement de bobines et dispositif de mesure statique5TELKOR (PROPRIETARY) LIMITED0147297022.16.57807185 Katherine Street, Eastgate Extension 4,Sandton, TransvaalZAVariawa, Omar Farouk107 Lovedale StreetLichtenburg, TransvaalZASimmonds, Edward Shane7 Kings Road, WendywoodSandton, TransvaalZABotha, Jacobus TheronMayo Farm, Olivia Street, GarsfonteinPretoria, TransvaalZAChinneck, Edgar Herbert61 Lurgan Road, ParkviewJohannesburg, TransvaalZAKowalczyk, Piotr Leonard505 President Flats, President StreetKrugersdorp, TransvaalZALeale, Robin George00032911FRANK B. DEHN & CO. Imperial House 15-19 KingswayLondon WC2B 6UZGBATBECHDKESFRGBLI19930721199329

s7 The invention relates to an inductive coil arrangement (18) for measuring the physical characteristics of a token (26). The coil arrangement (18) comprises a plurality of inductors (12,14,16), each inductor being formed out of at least two superposed planar spiral tracks (28,46,52,58,61,61A,62,70) separated by an insulating layer (72A,74A,76A,78A,80A,82A,84A,86A) of a multi-layer electrical device (72,74,76,78,80,82,84,86), such as a plurality of printed circuit boards which are laminated together. Conductive paths (92) extend axially between the tracks. The invention extends to a method of manufacturing the inductive coil arrangement, as well as a to token validation device (10) incorporating the inductive coil arrangement.