Hush disable feature for photoelectric smoke alarm
US6642849B1 · kind B1 · utility
17Cited by
11References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 11, 2001 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Apr 29, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B29/145
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A hush mode disabling device for a smoke alarm having a self-test function, a hush mode that engages upon activation of the self-test function to silence or desensitize the smoke alarm for a predetermined period of time, and a remote self-test controller. An improvement includes a hush mode disabler for determining whether the self-test function has presently been activated by the remote self-test controller and for disabling the hush mode if the self-test function has presently been activated by the remote self-test controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.