AU452761B2 - Fire detecting system - Google Patents

Fire detecting system

Info

Publication number
AU452761B2
AU452761B2 AU40790/72A AU4079072A AU452761B2 AU 452761 B2 AU452761 B2 AU 452761B2 AU 40790/72 A AU40790/72 A AU 40790/72A AU 4079072 A AU4079072 A AU 4079072A AU 452761 B2 AU452761 B2 AU 452761B2
Authority
AU
Australia
Prior art keywords
detecting system
fire detecting
fire
detecting
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
AU40790/72A
Other versions
AU4079072A (en
Inventor
RO KOBAYASHI and AKIRA YOKOTA Shull
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
Publication of AU4079072A publication Critical patent/AU4079072A/en
Application granted granted Critical
Publication of AU452761B2 publication Critical patent/AU452761B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/18—Prevention or correction of operating errors
    • G08B29/185—Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system
    • 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

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire Alarms (AREA)
  • Fire-Detection Mechanisms (AREA)
AU40790/72A 1971-04-15 1972-04-05 Fire detecting system Expired AU452761B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46023446A JPS5136119B1 (en) 1971-04-15 1971-04-15

Publications (2)

Publication Number Publication Date
AU4079072A AU4079072A (en) 1973-11-01
AU452761B2 true AU452761B2 (en) 1974-08-23

Family

ID=12110715

Family Applications (1)

Application Number Title Priority Date Filing Date
AU40790/72A Expired AU452761B2 (en) 1971-04-15 1972-04-05 Fire detecting system

Country Status (9)

Country Link
US (1) US3775761A (en)
JP (1) JPS5136119B1 (en)
AU (1) AU452761B2 (en)
CA (1) CA948290A (en)
CH (1) CH554031A (en)
FR (1) FR2133747B1 (en)
GB (1) GB1332270A (en)
IT (1) IT954665B (en)
ZA (1) ZA721943B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52116920A (en) * 1976-03-27 1977-09-30 Taisei Corp Method of preventing sedimentation of sludge in underground petroleum storing tanks and apparatus therefor
US4102194A (en) * 1976-09-20 1978-07-25 Dickey-John Corporation Electronic bin temperature monitor
JPS5471710U (en) * 1977-10-31 1979-05-22
US4287515A (en) * 1979-04-27 1981-09-01 Baker Industries, Inc. Fire detection system with multiple output signals
JPS62229394A (en) * 1986-03-14 1987-10-08 ニツタン株式会社 Emergency alarm
US4916432A (en) * 1987-10-21 1990-04-10 Pittway Corporation Smoke and fire detection system communication
US4814748A (en) * 1987-11-09 1989-03-21 Southwest Laboratories, Inc. Temporary desensitization technique for smoke alarms

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2903682A (en) * 1955-12-28 1959-09-08 Petcar Res Corp Flame detector system
US3147464A (en) * 1961-10-16 1964-09-01 Warren L Spielman First-out annunclator having input and supply control of indicator switching means
BE689837A (en) * 1964-09-29 1967-05-02
FR1565498A (en) * 1968-02-15 1969-05-02
US3719836A (en) * 1971-06-23 1973-03-06 C Possell Pressure sensitive sensor and control unit and method of using same
US3694670A (en) * 1971-10-26 1972-09-26 Joseph M Marzolf Easily switched silicon controlled rectifier

Also Published As

Publication number Publication date
FR2133747B1 (en) 1973-07-13
ZA721943B (en) 1972-12-27
DE2218198A1 (en) 1972-10-26
AU4079072A (en) 1973-11-01
CH554031A (en) 1974-09-13
FR2133747A1 (en) 1972-12-01
GB1332270A (en) 1973-10-03
IT954665B (en) 1973-09-15
DE2218198B2 (en) 1973-05-10
US3775761A (en) 1973-11-27
JPS5136119B1 (en) 1976-10-06
CA948290A (en) 1974-05-28

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