Passive triggering mechanisms for use with switching devices incorporating pyrotechnic features
US11276535B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2019 |
| Grant date | Mar 15, 2022 |
| Priority date | — |
| Expiry date | Apr 5, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H69/01
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed herein are passive triggering mechanisms for activation of pyrotechnic features within electrical switching devices, such as contactor devices and fuse devices. The activation of the pyrotechnic features is configured to change the configuration of the internal components of the switching device and prevent current flow through the device. In some embodiments, the triggering mechanisms comprise features that respond to a magnetic field, such as a reed switch. In some embodiments, the reed switch responds to elevated current flow and can then use the signal with the elevated current flow to activate the pyrotechnic feature. In other embodiments, the reed switch uses a power signal from a secondary power source to activate the pyrotechnic feature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.