An upper member for inducting power in a coupler assembly having an electromagnet core is a subassembly of a top body member and a bottom body member which enclose a circuit substrate. The circuit substrate is disposed within a cavity between the top and bottom body members, and includes electrical components...http://www.google.es/patents/US5128835?utm_source=gb-gplus-sharePatente US5128835 - Data current coupler with internal shielding for electronic package
Data current coupler with internal shielding for electronic package
