Momentary night light assembly
US8378596B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Apr 1, 2008 |
| Grant date | Feb 19, 2013 |
| Priority date | — |
| Expiry date | Apr 15, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V33/0052
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This invention relates to assemblies used as night lights and contains certain embodiments that improve, add features, and/or lower the cost of the type of momentary night light defined by U.S. Pat. No. 7,253,570. The words ‘momentary night light assembly’ as used in this invention means a light that remains lit for only a short fixed period of time following a transition from light to dark of the local ambient light. It then turns itself off after a short time period until another light to dark transition occurs. The words ‘night light’ as used herein means a light that remains on while the local ambient light is dark following a light to dark transition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.