Flexible heating wire
US4742212A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1985 |
| Grant date | May 3, 1988 |
| Priority date | — |
| Expiry date | Nov 12, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/56
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A flexible heating wire includes a first conductive body, and a second conductive body, a thermally fusible electrically insulative body arranged such that the first and second conductive bodies will be brought into electric contact with each other when the thermally fusible electrically insulative body is thermally fused. Further provided is a third conductive body and a heating body having a positive temperature coefficient and held in electric contact with at least one of the first and second conductive bodies and the third conductive body. The flexible heating wire is capable of self-controlling the temperature of the heated heating body. The flexible heating wire can detect the danger of localized overheating, abnormal overheating, or the generation of an arc which is caused when the heating wire is subjected to external oppression, bending, or twisting, or when the heating wire is heated by an external source, or when a conductive material has been mixed in the PTC heating body. Through such detection, the flexible heating wire is prevented from being overheated beyond a certain temperature setting. The flexible heating wire will not be heated up to a high temperature after u…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.