EP 0500367 A3 19930721 - COIL ARRANGEMENT AND STATIC MEASURING DEVICE
Title (en)
COIL ARRANGEMENT AND STATIC MEASURING DEVICE
Publication
Application
Priority
ZA 911248 A 19910220
Abstract (en)
[origin: EP0500367A2] 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. <IMAGE>
IPC 1-7
IPC 8 full level
G07D 5/08 (2006.01); H01F 27/28 (2006.01)
CPC (source: EP)
G07D 5/08 (2013.01); H01F 27/2804 (2013.01); H01F 2027/2809 (2013.01)
Citation (search report)
- [X] US 4441602 A 19840410 - OSTROSKI JOSEPH [US], et al
- [Y] US 4742903 A 19880510 - TRUMMER BERNHARD [CH]
- [A] WO 8600410 A1 19860116 - DIGITAL PRODUCTS CORP [US]
Designated contracting state (EPC)
AT BE CH DK ES FR GB LI
DOCDB simple family (publication)
DOCDB simple family (application)
EP 92301401 A 19920220