CH508252A - Fire alarm system - Google Patents

Fire alarm system

Info

Publication number
CH508252A
CH508252A CH446170A CH446170A CH508252A CH 508252 A CH508252 A CH 508252A CH 446170 A CH446170 A CH 446170A CH 446170 A CH446170 A CH 446170A CH 508252 A CH508252 A CH 508252A
Authority
CH
Switzerland
Prior art keywords
alarm system
fire alarm
fire
alarm
Prior art date
Application number
CH446170A
Other languages
German (de)
Inventor
Siepmann Bernd-Josef
Thilo Peer Ing Dr
Thinschmidt Hans
Original Assignee
Siemens Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Ag filed Critical Siemens Ag
Publication of CH508252A publication Critical patent/CH508252A/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/04—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using a single signalling line, e.g. in a closed loop

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
  • Fire Alarms (AREA)
  • Fire-Detection Mechanisms (AREA)
CH446170A 1969-03-25 1970-03-24 Fire alarm system CH508252A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691915184 DE1915184A1 (en) 1969-03-25 1969-03-25 Detectors arranged in loops, preferably ionization fire alarms

Publications (1)

Publication Number Publication Date
CH508252A true CH508252A (en) 1971-05-31

Family

ID=5729253

Family Applications (1)

Application Number Title Priority Date Filing Date
CH446170A CH508252A (en) 1969-03-25 1970-03-24 Fire alarm system

Country Status (3)

Country Link
CH (1) CH508252A (en)
DE (1) DE1915184A1 (en)
GB (1) GB1310169A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2321747B (en) * 1997-01-30 2000-10-18 Rafiki Protection Limited Alarm system

Also Published As

Publication number Publication date
DE1915184A1 (en) 1970-10-01
GB1310169A (en) 1973-03-14

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Legal Events

Date Code Title Description
PL Patent ceased