Invention Grant
US07987659B2 Twisted electric heating cables and method for manufacturing thereof 失效
双绞电加热电缆及其制造方法

  • Patent Title: Twisted electric heating cables and method for manufacturing thereof
  • Patent Title (中): 双绞电加热电缆及其制造方法
  • Application No.: US12092546
    Application Date: 2006-11-13
  • Publication No.: US07987659B2
    Publication Date: 2011-08-02
  • Inventor: Jong Seok Song
  • Applicant: Jong Seok Song
  • Agency: Park & Associates IP Law, P.C.
  • International Application: PCT/KR2006/004731 WO 20061113
  • International Announcement: WO2008/059997 WO 20080522
  • Main IPC: D02G3/02
  • IPC: D02G3/02
Twisted electric heating cables and method for manufacturing thereof
Abstract:
Disclosed herein is an electric heating cable which is used in an electric heating apparatus and minimizes an electromagnetic field effect. The electric heating cable is manufactured by twisting first and second electric heating strands in three axial directions. Each electric heating strand includes a core wire comprising a stranded wire of a resistor, and an insulating sheath made of fluorine resin. According to the invention, the electric heating cable is resistive to untwisting in a free state even if no adhering means is used, and is compactly twisted, so that the electric heating cable maintains a secured state and has superior flexibility, while reducing leakage flux, and the electric heating cable has a reduced outer diameter and is light, so that it is useful for a thin electric heating apparatus, and incurs a low manufacturing cost.
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