Fibrous heating element
Patent 4983814 Issued on January 8, 1991. Estimated Expiration Date: 
May 9, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 9, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3349359 3472289 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 InventorsAssigneeApplicationNo. 352668 filed on 05/09/1989US 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 typeExaminersPrimary: Reynolds, Bruce A.Assistant: Lateef, Marvin M. Attorney, Agent or FirmForeign Patent References
International ClassesH05B 003/34H05B 003/54 Foreign Application Priority Data1985-10-29 JPAbstractA 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 Thermistor type Cable type | |
