Precision type resistor
Electric hair curling iron with rechargeable battery power supply
Self regulating heating device employing positive temperature coefficient of resistance compositions Patent #: 4658121
ApplicationNo. 352668 filed on 05/09/1989
US Classes:219/545, Resistive element interwoven with fabric support219/212, Bed covering (e.g., blanket)219/529, Cloth or other fabric219/543, Comprising coating printed or deposited on core sheath or support means219/544, Element embedded within or completely surrounded by core, sheath, or support means338/22RThermistor type
ExaminersPrimary: Reynolds, Bruce A.
Assistant: Lateef, Marvin M.
Attorney, Agent or Firm
Foreign Patent References
International ClassesH05B 003/34
Foreign Application Priority Data1985-10-29 JP
AbstractA fibrous heating element having an electrical resistance of 1 to 100 Ω/m is prepared by coating a core fiber, preferably a yarn, with one or more electroconductive layers consisting of a polyurethane resin having carbon particles dispersed therein. The fibrous element is pliable and can be knit or woven into a fabric, and is particularly suitable for use in an electric heating blanket or in an industrial heating element.
Field of SearchOf particular construction and/or material (e.g., infrared generator)
Element embedded within or completely surrounded by core, sheath, or support means
Comprising coating printed or deposited on core sheath or support means
Comprising material to be heated
Resistive element interwoven with fabric support