Global Patent Index - EP 0980056 A1

EP 0980056 A1 20000216 - Alarm system

Title (en)

Alarm system

Title (de)

Alarmsystem

Title (fr)

Système d'alarme

Publication

EP 0980056 A1 20000216 (EN)

Application

EP 98306414 A 19980811

Priority

  • EP 98306414 A 19980811
  • GB 9709207 A 19970508

Abstract (en)

A fire alarm system comprises a warning device 18 and a control panel 10 for providing an alarm signal to trigger the sounder device 18 when a fire is detected. The control panel 10 comprises a power supply 12 which incorporates a rechargeable battery 13, the normal output voltage of the power supply 12 being greater than the voltage at which the output of the sounder device 18 is at or above a predetermined acceptable level. Thus, in the event that the sounder device 18 is triggered before or during a power failure, the output of the sounder device 18 will remain at or above the predetermined acceptable level for a considerable length of time, until the battery becomes exhausted. <IMAGE>

IPC 1-7

G08B 3/10

IPC 8 full level

G08B 29/18 (2006.01)

CPC (source: EP)

G08B 29/181 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

GB 2325074 A 19981111; GB 9709207 D0 19970625; EP 0980056 A1 20000216

DOCDB simple family (application)

GB 9709207 A 19970508; EP 98306414 A 19980811