RF Suppressing magnet wire

• US 4,503,284 A
• Filed: 11/09/1983
• Issued: 03/05/1985
• Est. Priority Date: 11/09/1983
• Status: Expired due to Fees

• Current Assignee: Essex Group Incorporated (LS Corporation)
• Original Assignee: Essex Group Incorporated (LS Corporation)
• Inventors: Minnick, Michael G., Weisz, Robert O.
• Primary Examiner(s): Grimley, A. T.
• Assistant Examiner(s): NIMMO, MORRIS
• Application Number:
  US06/550,279
• Time in Patent Office: 482 Days
• Field of Search: 174/36, 174/102 SC, 174/102 C, 174/120 SC, 174/110 N, 343/18 A, 333/12
• US Class Current: 174/36
• CPC Class Codes: H01B 11/14 Continuously inductively loaded cables, e.g. Krarup cables
• CPC Class Codes: H01B 9/027 composed of semi-conducting layers
• CPC Class Codes: Y10S 174/27 including a semiconductive layer

Abstract

RF absorbing magnet wire is disclosed made up of an electrical conductor such as copper or aluminum coated with at least one layer of polymeric insulation containing electrically and/or magnetically conductive particles. The wire may be made up of a plurality of insulating layers with the particles in the outermost layer. Such magnet wire will aid in eliminating RF interference where certain RF sensitive components, i.e. microprocessors, radios, etc. may be affected.

Claims

1. An insulating magnet wire comprising an electrical conductor coated with at least one layer of electrically insulating polyurethane material, said layer overcoated with a semiconductive layer of polyurethane modified nylon containing about 10 percent to about 40 percent by weight of electrically conductive carbon black particles, said semiconductive layer having a volume resistivity of about 0.1 ohm-centimeter to about 1000 ohm-centimeter and capable of suppressing radio frequency signals from about 100 KHz to about 100 MHz.