Conductive yarn and cloth containing the same

Abstract

A conductive yarn and a cloth containing the same are revealed. A plurality of fibers is wound with a heating element in a spiral form so as to form a yarn with electrical conductivity and flexibility. The conductive yarn is used as a thread in a first direction while regular yarns with conductive metal wires arranged at the two sides thereof are used as threads in a second direction. Thus the threads are woven into a cloth that generates heat while being conducted with electricity. Thereby the cloth can be made into mattress, curtains, textile wall coverings, oversleeves, knee braces, waist supports, foot pads, seat cushions, and carpets etc so as to replace various heating equipment.

1 . A conductive yarn comprising:
 a yarn having a plurality of fibers; and   a heating element wound around the yarn in a spiral form so as to make the yarn have electrical conductivity.   
     
     
         2 . The device as claimed in  claim 1 , wherein the heating element is tungsten alloy microfilament whose diameter ranges from 0.02 m/m to 0.08 m/m. 
     
     
         3 . The device as claimed in  claim 1 , wherein the heating element wound around the yarn in a spiral form is wound at about 70 to 125 coils per centimeter of the yarn. 
     
     
         4 . A cloth containing conductive yarns comprising:
 at least one conductive yarn used as a thread in a first direction;   at least one yarn having a plurality of fibers used as a thread in a second direction, limited around a middle part of the cloth, and interlaced with the conductive yarn in the first direction;   at least one conductive metal wire used as a thread in a second direction, arranged at the two sides of the yarn on the middle part of the cloth and passed across the conductive yarn in the first direction so as to form a conductive path.   
     
     
         5 . The device as claimed in  claim 4 , wherein the conductive metal wire is fine copper wire or fine silver wire whose diameter ranges from 0.05 to 0.12 m/m. 
     
     
         6 . The device as claimed in  claim 4 , wherein a yarn of the conductive yarn in the first direction and the yarn in the second direction are blended with yarns of various colors so as to increase colors and patterns of the cloth. 
     
     
         7 . The device as claimed in  claim 4 , wherein the conductive metal wire on two sides of the second direction is connected to a power supply unit that supplies 0-24 Volts low direct current (DC) while temperature of the cloth is able to be fine tuned and the temperature as well as heating time of the cloth can be set. 
     
     
         8 . The device as claimed in  claim 4 , wherein the cloth is able to be cut, connected in parallel/series and conducted with electricity for giving heat.