Multiple heat fusing wire circuit for underblankets
US4547658A · kind A · utility
28Cited by
9References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 13, 1984 |
| Grant date | Oct 15, 1985 |
| Priority date | — |
| Expiry date | Jun 13, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2203/017
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A heating cable for use with an electric underblanket the cable being of the type in which a sensor wire is employed coextensive with a heater wire and separated by a layer of meltable insulating material so that overheat conditions are sensed by contact between the sensor wire and the heater. A number of helically wound coextensive wires cooperate with switching means to provide overheat temperature sensing at various wattage levels of heating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.