Patent ID: 6933828

Claim:
An electromagnetic device comprising: an electrically conductive core having an inner diameter defining an opening therethrough and an outer diameter, the core having sharp edges extending circumferentially around the inner diameter and around the outer diameter thereof; a plurality of polymeric protection members wrapped circumferentially around the core and positioned adjacent the sharp edges of the core; an adhesive layer between the protection members and the core connecting the protection members to the core; a coated wire wrapped around the core so as to be magnetically coupled thereto and around the polymeric protection members so as to be displaced from the sharp edges of the core; and wherein at least one of the protection members further comprises a first end and a second end thereof, the first end and second end defining mating angles at an overlapping region of the protection members when the protection members are wrapped around the core so as to extend around all of one of the sharp edges of the core without a bump discontinuity at the overlapping region.