Protective device for a stand lamp
US5733038A · kind A · utility
Inventor
Key dates
| Filing date | Mar 19, 1997 |
| Grant date | Mar 31, 1998 |
| Priority date | — |
| Expiry date | Mar 19, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/802
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A protective device is used with a stand lamp which includes an upright lamp stand, a lamp base mounted on a top end of the lamp stand, a reflector mounted on the lamp base, and a lamp mounted horizontally on the lamp base and confined by the reflector. The protective device includes at least one sensor unit adapted to be mounted on the reflector and capable of generating a sensor light signal corresponding to intensity of light detected thereby, and a control circuit connected electrically to the sensor unit and adapted to interconnect electrically the lamp and a power source. The control circuit is capable of disconnecting the lamp from the power source upon detection that the sensor light signal has reached a level indicative of a condition that the reflector is covered by an object to prevent occurrence of a fire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.