CA939778A - Fire alarming system - Google Patents

Fire alarming system

Info

Publication number
CA939778A
CA939778A CA109,276A CA109276A CA939778A CA 939778 A CA939778 A CA 939778A CA 109276 A CA109276 A CA 109276A CA 939778 A CA939778 A CA 939778A
Authority
CA
Canada
Prior art keywords
alarming system
fire alarming
fire
alarming
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
CA109,276A
Other languages
English (en)
Inventor
Yukio Honda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nittan Co Ltd
Original Assignee
Nittan Co 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 Nittan Co Ltd filed Critical Nittan Co Ltd
Application granted granted Critical
Publication of CA939778A publication Critical patent/CA939778A/en
Expired legal-status Critical Current

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
    • G08B17/11—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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • 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)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fire Alarms (AREA)
  • Fire-Detection Mechanisms (AREA)
CA109,276A 1970-03-31 1971-03-31 Fire alarming system Expired CA939778A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2684270 1970-03-31

Publications (1)

Publication Number Publication Date
CA939778A true CA939778A (en) 1974-01-08

Family

ID=12204508

Family Applications (1)

Application Number Title Priority Date Filing Date
CA109,276A Expired CA939778A (en) 1970-03-31 1971-03-31 Fire alarming system

Country Status (6)

Country Link
US (1) US3778796A (OSRAM)
CA (1) CA939778A (OSRAM)
DE (1) DE2115759B2 (OSRAM)
FR (1) FR2083678B1 (OSRAM)
GB (1) GB1320651A (OSRAM)
ZA (1) ZA71780B (OSRAM)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3946374A (en) * 1970-08-13 1976-03-23 Sci Systems, Inc. Rate-of-change combustion and contamination detection device
CA1014675A (en) * 1973-03-19 1977-07-26 Frank W. Emerson Emergency alarm system
US4287515A (en) * 1979-04-27 1981-09-01 Baker Industries, Inc. Fire detection system with multiple output signals
US4435698A (en) 1980-06-11 1984-03-06 Hekatron Gmbh Circuit arrangement for the transmission of measurements to a central, especially in a fire alarm system
SE8202566L (sv) * 1982-04-23 1983-10-24 Ericsson Telefon Ab L M Forfarande och anordning for att i en slingkrets med ett forutbestemt antal parallellkopplade detektorer identifiera en larmande detektor
DE68917405D1 (de) * 1988-09-05 1994-09-15 Apollo Fire Detectors Ltd Anordnung zum Setzen von Markierungen zur Identifikation eines Feuerdetektors.
GB2321747B (en) * 1997-01-30 2000-10-18 Rafiki Protection Limited Alarm system
US5889468A (en) * 1997-11-10 1999-03-30 Banga; William Robert Extra security smoke alarm system
FR2897968B1 (fr) * 2006-02-24 2008-11-21 Airbus France Sas Systeme de detection d'incendie et aeronef equipe d'un tel systeme
US20090322526A1 (en) * 2008-06-25 2009-12-31 Lontka Karen D Arrangement and method for communicating with notification appliances
DE102021131104A1 (de) * 2021-11-26 2023-06-01 Dryad Networks GmbH Waldbrandfrüherkennungssystem mit piezo/bi-metall-sensor und verfahren zum betrieb eines waldbrandfrüherkennungssystems

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2607220A (en) * 1947-04-14 1952-08-19 Philip W Martin Means for measuring conditions in deep wells
FR983536A (fr) * 1949-02-03 1951-06-25 Installation radio-électrique de sécurité
US2662933A (en) * 1951-04-26 1953-12-15 Bell Telephone Labor Inc Multiplex carrier telegraph system
NL224947A (OSRAM) * 1957-02-19
US3388389A (en) * 1964-06-09 1968-06-11 Davis Foreman Alarm systems
US3357009A (en) * 1964-12-14 1967-12-05 Miller Peter Condition-responsive system for impressing distinctive frequency alarm tone on transmission line
US3484775A (en) * 1965-10-20 1969-12-16 Wallace Dean Cline Theft prevention system
CH473431A (de) * 1966-05-09 1969-05-31 Cerberus Ag Werk Fuer Elektron Verfahren zur Betriebsüberwachung von Feuermeldern

Also Published As

Publication number Publication date
FR2083678A1 (OSRAM) 1971-12-17
DE2115759B2 (de) 1973-02-01
ZA71780B (en) 1971-10-27
US3778796A (en) 1973-12-11
GB1320651A (en) 1973-06-20
DE2115759A1 (de) 1971-10-28
FR2083678B1 (OSRAM) 1974-10-31

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