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DK114678B - Optical fire alarm system. - Google Patents

Optical fire alarm system.

Info

Publication number
DK114678B
DK114678B DK646265AA DK646265A DK114678B DK 114678 B DK114678 B DK 114678B DK 646265A A DK646265A A DK 646265AA DK 646265 A DK646265 A DK 646265A DK 114678 B DK114678 B DK 114678B
Authority
DK
Denmark
Prior art keywords
alarm system
fire alarm
optical fire
optical
fire
Prior art date
Application number
DK646265AA
Other languages
Danish (da)
Inventor
Ab Ericsson L Telefon
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of DK114678B publication Critical patent/DK114678B/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
    • G08B17/107—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 for detecting light-scattering due to smoke
    • 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
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Emergency Lowering Means (AREA)
DK646265AA 1965-01-11 1965-12-16 Optical fire alarm system. DK114678B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE321/65A SE311306B (en) 1965-01-11 1965-01-11

Publications (1)

Publication Number Publication Date
DK114678B true DK114678B (en) 1969-07-21

Family

ID=20256359

Family Applications (1)

Application Number Title Priority Date Filing Date
DK646265AA DK114678B (en) 1965-01-11 1965-12-16 Optical fire alarm system.

Country Status (5)

Country Link
CH (1) CH448815A (en)
DK (1) DK114678B (en)
FI (1) FI45139C (en)
NO (1) NO117679B (en)
SE (1) SE311306B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5993253B2 (en) 2012-09-06 2016-09-14 能美防災株式会社 smoke detector

Also Published As

Publication number Publication date
FI45139C (en) 1972-03-10
SE311306B (en) 1969-06-02
CH448815A (en) 1967-12-15
FI45139B (en) 1971-11-30
NO117679B (en) 1969-09-08

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