Smoke detector sensitivity testing apparatus
US5670946A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1996 |
| Grant date | Sep 23, 1997 |
| Priority date | — |
| Expiry date | Feb 23, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D83/262
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Apparatus for testing the sensitivity of a smoke detector (12) in-situ, including a head assembly (1) comprising a housing (14) for surrounding a smoke detector in-situ and forming part of a sensing loop (14, 15, 16, 17)through which air carrying an aerosol will circulate, a sensor (25, 26, 27) for sensing the concentration of aerosol in the air circulating in the loop, a fan (20) for causing air to circulate in the loop, an aerosol container (24) for supplying aerosol to the loop and a control unit 2 for controlling the concentration of aerosol in the air circulating in the loop by controlling the fan (20) and the aerosol container (24) in response to the output of the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.