Switch-timer system and method for use in smoke detector alarm unit
US5442336A · kind A · utility
13Cited by
2References
4Claims
0Family size
Inventors
Key dates
| Filing date | Jun 1, 1993 |
| Grant date | Aug 15, 1995 |
| Priority date | — |
| Expiry date | Jun 1, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B17/10
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A system and method for temporarily disabling a smoke detector alarm unit. The present invention includes a switch between the main assembly and the power assembly of the unit and a timer for monitoring a predetermined length of time. The switch is caused to break the circuit between the main assembly and the power assembly while the timer monitors the passage of time. Once the predetermined length of time has passed, the switch is caused to reengage the circuit between the main assembly and the power assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.