Electric blanket control circuit
US4034185A · kind A · utility
13Cited by
4References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 2, 1975 |
| Grant date | Jul 5, 1977 |
| Priority date | — |
| Expiry date | Sep 2, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2203/035
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric blanket control circuit is provided which includes an overheat protection circuit to detect an overheat condition as well as a fail-safe testing circuit to assure that the electrical components in said overheat protection circuit are properly functioning. A simulation circuit is provided to electrically simulate an overheat condition in the blanket. An on-off switch is provided which will consecutively activate the overheat simulation circuit and then the fail-safe testing circuit so that said circuits are activated each time the electric blanket is turned off by the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.