Exit signs with and without emergency lighting
US7520072B2 · kind B2 · utility
Inventor
Key dates
| Filing date | May 9, 2007 |
| Grant date | Apr 21, 2009 |
| Priority date | — |
| Expiry date | May 29, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F2013/05
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Emergency signs and combination emergency signs and emergency lights wherein the combination signs are compact for shipment and are energy efficient using first interior light emitting diodes, powered by an AC power source, for illumination of messages formed in at least one side wall of the emergency signs and having at least one emergency light emitting diode lamp for providing emergency lighting in the event of AC power failure and wherein the at least one emergency light emitting diode lamp, in some embodiments, is selectively deployable and adjustable relative to the signs, and in others, is fixedly mounted relative to the signs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.