Spark protection apparatus for intrinsically safe, battery-operated devices
US11450934B2 · kind B2 · utility
0Cited by
7References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 7, 2020 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Dec 7, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M2200/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A simple, low-cost circuit is disclosed that provides the requisite triple redundancy for a spark protection circuit for a battery-operated device having an on-board battery charger that is intended for use in hazardous atmospheres. The circuit complies with the IEC standard for intrinsically safe products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.