Combination smoke detection device and laser escape indicator
US6181251A · kind A · utility
Inventor
Key dates
| Filing date | Jan 25, 2000 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | Jan 25, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B17/113
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A combination smoke detection device and laser escape indicator provides a primary circuit that electrically connects a power source to a laser. The primary circuit has a smoke detector switch that is operably controlled by a smoke detecting means. When the smoke detecting means detects smoke, it closes the smoke detector switch, thereby activating the laser to produce a laser beam. The laser is mounted on a swivel arm that is pivotally connected to a primary housing, the primary housing being rotatably attached to a base housing. The swivel arm and the primary housing together can be adjusted so that the laser projects the laser beam in a desired direction. When the combination is installed in a structure, the laser is manipulated so that when the laser generates a laser beam, the laser beam directs people to an exit from the structure. The primary circuit is preferably also connected to a siren, so when the laser is triggered, an audible siren is also activated, providing people within the structure with a warning of the fire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.