Method and apparatus for safety switch
US6959876B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2003 |
| Grant date | Nov 1, 2005 |
| Priority date | — |
| Expiry date | Aug 10, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24D2101/60
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A circuit in accordance with the invention includes a safety switch device coupled with, and between, a thermally activated voltage source and a primary switch. The circuit also includes a safety switch control circuit coupled with the safety switch device and a controller circuit; and a voltage generation circuit for turning on the safety switch device. The voltage generation circuit is coupled with the safety switch control circuit, the controller circuit and the safety switch device, such that the controller circuit substantially controls operation of the voltage generation circuit, the safety switch control circuit, and a primary switch circuit that includes the primary switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.