Voltage presence indication device and electrical apparatus comprising such an indicator
US7459901B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2002 |
| Grant date | Dec 2, 2008 |
| Priority date | — |
| Expiry date | Apr 4, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/155
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The voltage presence indication device comprises a collector electrode (2) designed to have at least one capacitive connection (5) with an electrical ground (6) or a capacitive connection (3) with an electrical conductor (4) to be monitored, and display means (7) connected to said collector electrode (2) to indicate the presence of an electrical voltage in said electrical conductor to be monitored. The display means comprise at least one multilayer device (11). The multilayer device comprises a light-emitting layer (12) arranged between a first insulating layer (13) and a second insulating layer (14), a first conducting layer (15) arranged on the first insulating layer (13) and connected to said conducting electrode (2), and a second conducting layer (16) arranged on the second insulating layer (14). An electrical apparatus comprises such a device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.