JPS5271998A - Smoke sensitive fire alarm - Google Patents

Smoke sensitive fire alarm

Info

Publication number
JPS5271998A
JPS5271998A JP51146685A JP14668576A JPS5271998A JP S5271998 A JPS5271998 A JP S5271998A JP 51146685 A JP51146685 A JP 51146685A JP 14668576 A JP14668576 A JP 14668576A JP S5271998 A JPS5271998 A JP S5271998A
Authority
JP
Japan
Prior art keywords
fire alarm
sensitive fire
smoke sensitive
smoke
alarm
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.)
Pending
Application number
JP51146685A
Other languages
English (en)
Inventor
Deiru Raasen Rarii
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.)
PATENT DEV AND MANAGEMENT Co
Original Assignee
PATENT DEV AND MANAGEMENT Co
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 PATENT DEV AND MANAGEMENT Co filed Critical PATENT DEV AND MANAGEMENT Co
Publication of JPS5271998A publication Critical patent/JPS5271998A/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
    • G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
    • G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries
    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G08B29/181—Prevention or correction of operating errors due to failing power supply

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Computer Security & Cryptography (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Fire Alarms (AREA)
JP51146685A 1975-12-08 1976-12-08 Smoke sensitive fire alarm Pending JPS5271998A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/638,843 US4083037A (en) 1975-12-08 1975-12-08 Detection circuit

Publications (1)

Publication Number Publication Date
JPS5271998A true JPS5271998A (en) 1977-06-15

Family

ID=24561685

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51146685A Pending JPS5271998A (en) 1975-12-08 1976-12-08 Smoke sensitive fire alarm

Country Status (6)

Country Link
US (1) US4083037A (ja)
JP (1) JPS5271998A (ja)
AU (1) AU1994376A (ja)
CA (1) CA1061016A (ja)
DE (2) DE2653803A1 (ja)
GB (2) GB1567779A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6237395U (ja) * 1985-08-24 1987-03-05
CN111968337A (zh) * 2020-08-31 2020-11-20 广东爱得威建设(集团)股份有限公司 用于消防的烟雾报警装置

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2707409C2 (de) * 1977-02-21 1985-02-21 Hartwig Dipl.-Ing. 2409 Scharbeutz Beyersdorf Ionisationsbrandmelder
US4238788A (en) * 1978-01-03 1980-12-09 Teledyne Industries, Inc. System for detecting a combustion process
US4205306A (en) * 1978-01-09 1980-05-27 Dicon Systems Limited Battery operated smoke detector electronics
EP0003662A3 (en) * 1978-02-03 1979-09-05 Hochiki Corporation Single station type fire alarm system and a multivibrator used in the detection circuitry
US4246572A (en) * 1978-03-27 1981-01-20 Patent Development & Management Company Detection circuit with hysteresis
US4264901A (en) * 1978-07-17 1981-04-28 Petersen Lee O Moisture detecting and alarm device
US4251811A (en) * 1979-12-26 1981-02-17 Rca Corporation Battery test system, as for smoke detector alarm
GB2138570B (en) * 1983-04-19 1987-10-28 Emi Ltd Smoke detector
US4929924A (en) * 1989-01-27 1990-05-29 General Signal Corporation Electronic alarm horn
AU708345B2 (en) * 1996-04-04 1999-08-05 Gilbert Alain Lindsay Garrick Fire detector silenceable low battery pre-alarm
AUPN912096A0 (en) * 1996-04-04 1996-05-02 Garrick, Corinne Marie Jeanette Fire detector silenceable low battery pre-alarm
US6326880B1 (en) 1998-09-30 2001-12-04 Pittway Corporation Detector with control switch
DE10340396B4 (de) * 2003-09-02 2007-04-05 Siemens Ag Gefahrenmelder mit Batterieüberwachung
US7742753B2 (en) * 2005-12-28 2010-06-22 Motorola, Inc. Method and apparatus for operating a mobile communication device coupled with an external power supply for charging a battery of the mobile communication device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3505663A (en) * 1965-12-20 1970-04-07 Gen Motors Corp Power source condition indicator
US3594751A (en) * 1968-02-29 1971-07-20 Brk Electronics Detection of products of combustion
US3718919A (en) * 1969-06-16 1973-02-27 Nittan Co Ltd Ionization smoke detector
US3603811A (en) * 1969-12-09 1971-09-07 American Optical Corp Two-terminal bipolar self-powered low current limiter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6237395U (ja) * 1985-08-24 1987-03-05
CN111968337A (zh) * 2020-08-31 2020-11-20 广东爱得威建设(集团)股份有限公司 用于消防的烟雾报警装置

Also Published As

Publication number Publication date
GB1567779A (en) 1980-05-21
DE2659900A1 (de) 1978-01-12
GB1567780A (en) 1980-05-21
DE2653803A1 (de) 1977-07-28
AU1994376A (en) 1978-06-01
US4083037A (en) 1978-04-04
CA1061016A (en) 1979-08-21

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