Shabbat bulb with gear controlled blackout mechanism
US10203073B2 · kind B2 · utility
0Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2017 |
| Grant date | Feb 12, 2019 |
| Priority date | — |
| Expiry date | Nov 22, 2037 |
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 allows control of illumination without electrical intervention by a person observing strictures of Shabbat orthodox Jewish law. The bulb includes a blackout mechanism with shutter disc having at least one disc aperture for transmission of light and gear teeth; and an arm projecting radially outward from the shutter disc fitted with drive gear teeth. Manual rotation of the arm engages drive gear teeth with shutter disc gear teeth moving the disc apertures from an open to a closed position respectively allowing full or totally no illumination to exit the bulb.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.