EP 0346152 A3 19901003 - SMOKE DETECTOR DEVICES AND DETECTOR CIRCUIT
Title (en)
SMOKE DETECTOR DEVICES AND DETECTOR CIRCUIT
Publication
Application
Priority
GB 8813811 A 19880610
Abstract (en)
[origin: EP0346152A2] A smoke detector device comprises a housing (30) adapted to be mounted below an existing ceiling rose fitting (32) and to be clamped to an electrical flex (38) passing therethrough. The housing (30) encloses a smoke detector circuit formed on a printed circuit board (62), a battery (48) and an alarm sounder (50). The device is intended particularly for use in domestic environment, and is intended unobtrusive and inexpensive. An alternative embodiment includes a housing adapted to replace existing ceiling rose fittings; A novel photoelectric-type detector circuit, incorporating an integrated circuit and high intensity light emitting diode, is also described, which again is intended to be compact and inexpensive.
IPC 1-7
IPC 8 full level
G08B 17/107 (2006.01)
CPC (source: EP)
G08B 17/107 (2013.01); G08B 17/113 (2013.01)
Citation (search report)
- [X] US 4090178 A 19780516 - NORRIS ELWOOD G
- [X] GB 2008871 A 19790606 - ESB INT CORP
- [A] US 4087799 A 19780502 - BROUWER FRANS
- [A] US 4539556 A 19850903 - DEDERICH STANLEY S [US], et al
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0346152 A2 19891213; EP 0346152 A3 19901003; GB 2221074 A 19900124; GB 8813811 D0 19880713; GB 8913478 D0 19890802
DOCDB simple family (application)
EP 89305902 A 19890612; GB 8813811 A 19880610; GB 8913478 A 19890612