Inductive thermal fusing device
US6341211B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2000 |
| Grant date | Jan 22, 2002 |
| Priority date | — |
| Expiry date | Jul 11, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/145
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The object of the present invention is to provide an inductive thermal fusing device that is reduced in size and weight based on a smaller closed magnetic circuit iron core. In order to attain this object, the present invention comprises a closed magnetic circuit iron core that forms a closed magnetic circuit, an inductive coil 14 that is wound such that it is linked to the closed magnetic circuit iron core and generates a magnetic flux that causes an inductive current that flows around the circumference of the conductive member, a power supply 50 that provides AC voltage to the inductive coil 14, a voltage detection means 7 that detects the voltage of the power supply 50, and a frequency changing means (first through fourth SSRs 51 through 54 and a CPU 5) that changes the frequency of the AC voltage applied to the coil 14 based on the detected voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.