HK55376A - Fire alarms - Google Patents

Fire alarms

Info

Publication number
HK55376A
HK55376A HK553/76*UA HK55376A HK55376A HK 55376 A HK55376 A HK 55376A HK 55376 A HK55376 A HK 55376A HK 55376 A HK55376 A HK 55376A
Authority
HK
Hong Kong
Prior art keywords
fire alarms
alarms
fire
Prior art date
Application number
HK553/76*UA
Inventor
W Th Peberdy
E Macdonald
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 HK55376A publication Critical patent/HK55376A/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)
HK553/76*UA 1972-08-11 1976-09-08 Fire alarms HK55376A (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 (1)

Publication Number Publication Date
HK55376A true HK55376A (en) 1976-09-17

Family

ID=26263518

Family Applications (1)

Application Number Title Priority Date Filing Date
HK553/76*UA HK55376A (en) 1972-08-11 1976-09-08 Fire alarms

Country Status (17)

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

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE7604502L (en) * 1976-04-15 1977-10-16 Ericsson Telefon Ab L M OPTICAL FIRE DETECTOR
SE395554B (en) * 1976-09-01 1977-08-15 Ericsson Telefon Ab L M OPTICAL FIRE DETECTOR
EP0022438B1 (en) * 1979-07-13 1983-07-20 Securiton AG Method for detecting aerosols in air of a control zone and apparatus for its performing
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 (en) * 1983-10-21 1990-08-08 COLE, Martin Terence Improvements relating to smoke detection apparatus
DE102004004098B3 (en) * 2004-01-27 2005-09-01 Wagner Alarm- Und Sicherungssysteme Gmbh Method for evaluating a scattered light signal and scattered light detector for carrying out the method
CN108510701B (en) * 2018-03-20 2019-11-22 深圳市泰和安科技有限公司 A kind of intelligent smog alarm method, apparatus and system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE455987C (en) * 1924-04-11 1928-02-11 John Joseph Dowling Device for displaying light fluctuations through a light-sensitive cell and a highly sensitive relay
DE1024851B (en) * 1953-05-04 1958-02-20 Electronics Corp America Display device for flames
JPS4429154Y1 (en) * 1967-04-20 1969-12-03
GB1278205A (en) * 1970-02-11 1972-06-21 Shorrock Develpoments Ltd Smoke detecting device
DE2023463B1 (en) * 1970-05-13 1971-12-30 Preussag Ag Feuerschutz Optical smoke detector

Also Published As

Publication number Publication date
CH560434A5 (en) 1975-03-27
AT347300B (en) 1978-12-27
NO132564B (en) 1975-08-18
AU5901373A (en) 1975-02-13
NO132564C (en) 1975-11-26
NL7311010A (en) 1974-02-13
ES417739A1 (en) 1976-02-16
IL42930A (en) 1976-10-31
DE2340041A1 (en) 1974-04-04
FR2195813A1 (en) 1974-03-08
IL42930A0 (en) 1973-11-28
SE383793B (en) 1976-03-29
DK144255C (en) 1982-08-16
AU476368B2 (en) 1976-09-16
DK144255B (en) 1982-01-25
IT990203B (en) 1975-06-20
GB1405615A (en) 1975-09-10
MY7600243A (en) 1976-12-31
ATA708673A (en) 1978-04-15
DD107157A5 (en) 1974-07-12
FR2195813B3 (en) 1975-10-31
DE2340041C2 (en) 1984-11-29
JPS49132998A (en) 1974-12-20

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