IL42930A - Fire alarms - Google Patents

Fire alarms

Info

Publication number
IL42930A
IL42930A IL42930A IL4293073A IL42930A IL 42930 A IL42930 A IL 42930A IL 42930 A IL42930 A IL 42930A IL 4293073 A IL4293073 A IL 4293073A IL 42930 A IL42930 A IL 42930A
Authority
IL
Israel
Prior art keywords
radiation
fire
accordance
detecting apparatus
frequency
Prior art date
Application number
IL42930A
Other languages
English (en)
Other versions
IL42930A0 (en
Original Assignee
Chubb Fire Security Ltd
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 Chubb Fire Security Ltd filed Critical Chubb Fire Security Ltd
Publication of IL42930A0 publication Critical patent/IL42930A0/xx
Publication of IL42930A publication Critical patent/IL42930A/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
IL42930A 1972-08-11 1973-08-08 Fire alarms IL42930A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3763372A GB1405615A (en) 1972-08-11 1972-08-11 Fire alarms
GB5258772 1972-11-14

Publications (2)

Publication Number Publication Date
IL42930A0 IL42930A0 (en) 1973-11-28
IL42930A true IL42930A (en) 1976-10-31

Family

ID=26263518

Family Applications (1)

Application Number Title Priority Date Filing Date
IL42930A IL42930A (en) 1972-08-11 1973-08-08 Fire alarms

Country Status (17)

Country Link
JP (1) JPS49132998A (fr)
AT (1) AT347300B (fr)
AU (1) AU476368B2 (fr)
CH (1) CH560434A5 (fr)
DD (1) DD107157A5 (fr)
DE (1) DE2340041C2 (fr)
DK (1) DK144255C (fr)
ES (1) ES417739A1 (fr)
FR (1) FR2195813B3 (fr)
GB (1) GB1405615A (fr)
HK (1) HK55376A (fr)
IL (1) IL42930A (fr)
IT (1) IT990203B (fr)
MY (1) MY7600243A (fr)
NL (1) NL7311010A (fr)
NO (1) NO132564C (fr)
SE (1) SE383793B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE7604502L (sv) * 1976-04-15 1977-10-16 Ericsson Telefon Ab L M Optisk branddetektor
SE395554B (sv) * 1976-09-01 1977-08-15 Ericsson Telefon Ab L M Optisk branddetektor
EP0022438B1 (fr) * 1979-07-13 1983-07-20 Securiton AG Procédé de détection d'aérosols dans l'air se trouvant dans une zone de contròle ainsi que dispositif pour sa mise en oeuvre
JPS5631625A (en) * 1979-08-24 1981-03-31 Hochiki Corp Smoke detector of photoelectronic type
JPS57140925A (en) * 1981-02-24 1982-08-31 Fuji Heavy Ind Ltd Detection of clutch overheat
AU556490B2 (en) * 1982-07-29 1986-11-06 Kerr-Mcgee Corp. Production monitoring system
EP0145189B1 (fr) * 1983-10-21 1990-08-08 COLE, Martin Terence Appareil pour la détection de la fumée
DE102004004098B3 (de) 2004-01-27 2005-09-01 Wagner Alarm- Und Sicherungssysteme Gmbh Verfahren zur Auswertung eines Streulichtsignals und Streulichtdetektor zur Durchführung des Verfahrens
CN108510701B (zh) * 2018-03-20 2019-11-22 深圳市泰和安科技有限公司 一种智能烟雾报警方法、装置及系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE455987C (de) * 1924-04-11 1928-02-11 John Joseph Dowling Vorrichtung zum Anzeigen von Lichtschwankungen durch eine lichtempfindliche Zelle und ein hochempfindliches Relais
DE1024851B (de) * 1953-05-04 1958-02-20 Electronics Corp America Anzeigevorrichtung fuer Flammen
JPS4429154Y1 (fr) * 1967-04-20 1969-12-03
GB1278205A (en) * 1970-02-11 1972-06-21 Shorrock Develpoments Ltd Smoke detecting device
DE2023463B1 (de) * 1970-05-13 1971-12-30 Preussag Ag Feuerschutz Optischer Rauchdetektor

Also Published As

Publication number Publication date
ES417739A1 (es) 1976-02-16
IT990203B (it) 1975-06-20
DK144255B (da) 1982-01-25
DD107157A5 (fr) 1974-07-12
GB1405615A (en) 1975-09-10
SE383793B (sv) 1976-03-29
IL42930A0 (en) 1973-11-28
HK55376A (en) 1976-09-17
DE2340041A1 (de) 1974-04-04
CH560434A5 (fr) 1975-03-27
NO132564C (fr) 1975-11-26
DE2340041C2 (de) 1984-11-29
AT347300B (de) 1978-12-27
ATA708673A (de) 1978-04-15
NL7311010A (fr) 1974-02-13
NO132564B (fr) 1975-08-18
DK144255C (da) 1982-08-16
FR2195813B3 (fr) 1975-10-31
FR2195813A1 (fr) 1974-03-08
MY7600243A (en) 1976-12-31
JPS49132998A (fr) 1974-12-20
AU476368B2 (en) 1976-09-16
AU5901373A (en) 1975-02-13

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