Shabbat bulb
US9541262B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2015 |
| Grant date | Jan 10, 2017 |
| Priority date | — |
| Expiry date | Jul 7, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A Shabbat bulb and a related method is provided allowing control of illumination without electrical intervention by a person observing strictures of Shabbat orthodox Jewish law. The bulb includes a housing covering an electrically operated light source. A blackout mechanism is attached to but easily separable from the housing and has no operating connection with electrical circuitry. The mechanism includes a disc having at least one disc aperture through which light from the light source is transmitted; and an arm projecting radially outward from the disc. Manual movement of the arm from an open position to a closed position respectively allows full or totally no illumination to exit the bulb via the disc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.