Toaster
US12220084B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2021 |
| Grant date | Feb 11, 2025 |
| Priority date | — |
| Expiry date | Dec 14, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F7/064
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In the toaster, the first switch is connected with the neutral wire terminal and the heating element; the second switch and the power-off protection switch are connected in series between the live wire terminal and the heating element; the output end of the rectifier circuit is respectively connected with the electromagnet and the timing control circuit; when the lifting plate moves from the ejected position to the working position, the first pressing part depresses the first switch to a closed state, the second pressing part depresses each of the second switch and the power-off protection switch to a closed state, the electromagnet is energized and attracts the attracting part, the heating element starts to work; when the electromagnet is disconnected from the timing control circuit, the attracting part is released, the lifting plate springs upward, the power-off protection switch changes to an opened state, and the heating element stops working.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.