CA934842A - Fire alarming system - Google Patents

Fire alarming system

Info

Publication number
CA934842A
CA934842A CA110595A CA110595A CA934842A CA 934842 A CA934842 A CA 934842A CA 110595 A CA110595 A CA 110595A CA 110595 A CA110595 A CA 110595A CA 934842 A CA934842 A CA 934842A
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
CA110595A
Other languages
English (en)
Other versions
CA110595S (en
Inventor
Kobayashi Tetsuo
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
Priority claimed from JP3384370A external-priority patent/JPS4814519B1/ja
Priority claimed from JP7314270A external-priority patent/JPS4929798B1/ja
Application filed by Nittan Co Ltd filed Critical Nittan Co Ltd
Application granted granted Critical
Publication of CA934842A publication Critical patent/CA934842A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G08B25/018—Sensor coding by detecting magnitude of an electrical parameter, e.g. resistance
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire Alarms (AREA)
  • Alarm Systems (AREA)
CA110595A 1970-04-18 1971-04-16 Fire alarming system Expired CA934842A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP3266970 1970-04-18
JP3384370A JPS4814519B1 (cs) 1970-04-22 1970-04-22
JP7314270A JPS4929798B1 (cs) 1970-08-22 1970-08-22

Publications (1)

Publication Number Publication Date
CA934842A true CA934842A (en) 1973-10-02

Family

ID=27287807

Family Applications (1)

Application Number Title Priority Date Filing Date
CA110595A Expired CA934842A (en) 1970-04-18 1971-04-16 Fire alarming system

Country Status (4)

Country Link
US (1) US3676877A (cs)
CA (1) CA934842A (cs)
FR (1) FR2086173B1 (cs)
GB (1) GB1320489A (cs)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE402660B (sv) * 1970-11-12 1978-07-10 Securitas Int Ab Brandalarmanleggning
US3978461A (en) * 1975-05-12 1976-08-31 Firetek Corporation Three wire detection circuit
DE2638068C3 (de) * 1976-08-24 1986-11-13 Siemens AG, 1000 Berlin und 8000 München Brandmeldeanlage mit mehreren über eine Meldeschleife betreibbaren Meldern
DE2641489C2 (de) * 1976-09-15 1984-05-30 Siemens AG, 1000 Berlin und 8000 München Verfahren zur Übertragung von Meßwerten in einem Brandmeldesystem
US4134111A (en) * 1976-12-16 1979-01-09 N.V. Tools Limited Aerosol detector and method
US4091363A (en) * 1977-01-03 1978-05-23 Pittway Corporation Self-contained fire detector with interconnection circuitry
US4385287A (en) * 1979-12-07 1983-05-24 Securicor Granley Systems Limited Multiple alarm condition detection and signalling
US4349751A (en) * 1980-02-11 1982-09-14 Bell Telephone Laboratories, Incorporated Control circuitry using a pull-down transistor for high voltage solid-state switches
US7447069B1 (en) 1989-04-13 2008-11-04 Sandisk Corporation Flash EEprom system
DE69034227T2 (de) * 1989-04-13 2007-05-03 Sandisk Corp., Sunnyvale EEprom-System mit Blocklöschung
US7190617B1 (en) * 1989-04-13 2007-03-13 Sandisk Corporation Flash EEprom system
FR2723234B1 (fr) * 1994-07-29 1996-10-18 Lewiner Jacques Dispositif de detection d'alarme a boucles de courant, et balise de reperage de sous-zone pour un tel dispositif

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2900628A (en) * 1956-01-27 1959-08-18 Westinghouse Electric Corp Multiple fault indicating system
US2987712A (en) * 1957-09-12 1961-06-06 Itt Fault alarm system
US3500469A (en) * 1966-02-11 1970-03-10 Protection Controls Inc Fault indicating system for a plurality of monitored devices
US3426217A (en) * 1966-05-26 1969-02-04 Us Army Breakwire signal conditioner
US3527987A (en) * 1967-10-23 1970-09-08 Gen Electric Monitor circuit for detecting the occurrence of one or more of a plurality of events in a system

Also Published As

Publication number Publication date
DE2118304A1 (de) 1971-11-04
FR2086173B1 (cs) 1975-01-17
GB1320489A (en) 1973-06-13
FR2086173A1 (cs) 1971-12-31
DE2118304B2 (de) 1973-02-01
US3676877A (en) 1972-07-11

Similar Documents

Publication Publication Date Title
AU465213B2 (en) Fire alarm signalling system
AU463927B2 (en) Ionisation fire alarm
CA938385A (en) Fire detection system
CA956008A (en) Integrated fully supervised fire alarm system
CA979097A (en) Alarm system
CA934842A (en) Fire alarming system
CA930283A (en) Safety systems
CA939778A (en) Fire alarming system
CA948800A (en) Security alarm system
CA937650A (en) Fire alarming system
CA918780A (en) Alarm system
CA952996A (en) Warning system
CA952209A (en) Fire alarm system
CA948292A (en) Alarm system
CA908808A (en) Safety alarm
CA933679A (en) Fire alarming system
AU455486B2 (en) Alarm system
ZA711336B (en) Fire alarming system
AU3473071A (en) Firefighting system
AU435450B2 (en) Fire alarming system
CA834958A (en) Alarm system
AU455262B2 (en) Improved alarm system
ZA714843B (en) Fire alarming system
ZA712036B (en) Fire alarming system
AU460308B2 (en) Fire protection system