Electric lighting devices that simulate a flickering flame
US9591729B2 · kind B2 · utility
22Cited by
22References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 30, 2014 |
| Grant date | Mar 7, 2017 |
| Priority date | — |
| Expiry date | Feb 19, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Various embodiments of electric lighting devices, and especially electric candles, are described. The devices include a projection screen onto which light can be emitted. Advantageously, the projection screen can move with respect to the device's housing to thereby create a flickering flame effect. The device can include one or more magnets disposed outside of the housing that can interact with an electromagnetic field generated by the device to thereby move the projection screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.