CH448815A - Anordnung bei Feuermeldeanlagen - Google Patents

Anordnung bei Feuermeldeanlagen

Info

Publication number
CH448815A
CH448815A CH33066A CH33066A CH448815A CH 448815 A CH448815 A CH 448815A CH 33066 A CH33066 A CH 33066A CH 33066 A CH33066 A CH 33066A CH 448815 A CH448815 A CH 448815A
Authority
CH
Switzerland
Prior art keywords
light source
arrangement
arrangement according
light
ring
Prior art date
Application number
CH33066A
Other languages
German (de)
English (en)
Inventor
Gustaf Lindgren Erik
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 CH448815A publication Critical patent/CH448815A/de

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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 SYSTEMS, e.g. PERSONAL 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)
  • Emergency Lowering Means (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
CH33066A 1965-01-11 1966-01-11 Anordnung bei Feuermeldeanlagen CH448815A (de)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
CH448815A true CH448815A (de) 1967-12-15

Family

ID=20256359

Family Applications (1)

Application Number Title Priority Date Filing Date
CH33066A CH448815A (de) 1965-01-11 1966-01-11 Anordnung bei Feuermeldeanlagen

Country Status (5)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2706516A1 (en) * 2012-09-06 2014-03-12 Nohmi Bosai Ltd. Aperture plate mounting in scattering type smoke detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2706516A1 (en) * 2012-09-06 2014-03-12 Nohmi Bosai Ltd. Aperture plate mounting in scattering type smoke detector
US9165448B2 (en) 2012-09-06 2015-10-20 Nohmi Bosai Ltd. Smoke detector

Also Published As

Publication number Publication date
FI45139B (OSRAM) 1971-11-30
FI45139C (fi) 1972-03-10
SE311306B (OSRAM) 1969-06-02
DK114678B (da) 1969-07-21
NO117679B (OSRAM) 1969-09-08

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