Twisted electric heating cables and method for manufacturing...

Details Twisted electric heating cables and method for manufacturing... Twisted electric heating cables and method for manufacturing...

2011-08-02

2011-08-02

Hurley, Shaun R (Department: 3765)

Textiles: spinning, twisting, and twining

Apparatus and processes

Stranding

C057S236000

Reexamination Certificate

active

07987659

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.

REFERENCES:
patent: 4574574 (1986-03-01), Knaak
patent: 5486649 (1996-01-01), Gareis
patent: 5666452 (1997-09-01), Gregory et al.
patent: 6378283 (2002-04-01), Barton
patent: 2006/0059883 (2006-03-01), Hopkinson et al.
patent: 10-321356 (1998-12-01), None
patent: 2002-313543 (2002-10-01), None
patent: 10-0649334 (2006-11-01), None

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