A magnetic ribbon or sheet is coated with an electrical insulator prior to formation of a magnetic implement. Manufacture of the magnetic implement is accomplished in a single process without need for co-winding magnetic and insulator ribbons. Thermal property differences between the magnetic material...http://www.google.fr/patents/US7056595?utm_source=gb-gplus-shareBrevet US7056595 - Magnetic implement using magnetic metal ribbon coated with insulator
Magnetic implement using magnetic metal ribbon coated with insulator
