Flameproof apparatus using non-grounded energy-limiting barrier
US7852610B2 · kind B2 · utility
4Cited by
25References
39Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2007 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | Nov 24, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/008
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device intended to meet flameproof approval requirements is configured to have two compartments separated by an energy-limiting barrier. The first compartment of the device houses the wiring terminations that bear ignition-capable energy and, therefore, must be flameproof. The energy-limiting barrier is configured to limit the energy that can reach the second compartment to a level that is not ignition capable. This allows the second compartment to be safe without meeting the flameproof requirements, and allows user-interface elements such as switches and indicators to be designed in a more cost-effective manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.