GB1324286A - Ionisation fire alarm - Google Patents

Ionisation fire alarm

Info

Publication number
GB1324286A
GB1324286A GB3471271A GB3471271A GB1324286A GB 1324286 A GB1324286 A GB 1324286A GB 3471271 A GB3471271 A GB 3471271A GB 3471271 A GB3471271 A GB 3471271A GB 1324286 A GB1324286 A GB 1324286A
Authority
GB
United Kingdom
Prior art keywords
fire alarm
july
electrode
housing
radioactive material
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
GB3471271A
Inventor
T Lampart
M Kuhn
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.)
Cerberus AG
Original Assignee
Cerberus AG
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 Cerberus AG filed Critical Cerberus AG
Publication of GB1324286A publication Critical patent/GB1324286A/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
    • 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)
  • Fire-Detection Mechanisms (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

1324286 Discharge apparatus CERBERUS AG 23 July 1971 [23 July 1970] 34712/71 Heading H1D An ionization type sensor for a fire alarm comprises a housing in three separable parts; a first part 1 forming a socket connectible by contacts 6, 8 to the second part which contains a radioactive material 23 and electronic circuitry 24 and, by virtue of electrode 21, together with the third part 27, constitutes an ionization chamber. A reference ionization chamber is formed by cover 18 and electrode 21 and contains radioactive material 22. A switch 38 renders the sensor inoperable when the third part 27 is removed. Circuitry including transistors is built into the housing.
GB3471271A 1970-07-23 1971-07-23 Ionisation fire alarm Expired GB1324286A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1120370A CH508251A (en) 1970-07-23 1970-07-23 Ionization fire alarms

Publications (1)

Publication Number Publication Date
GB1324286A true GB1324286A (en) 1973-07-25

Family

ID=4371086

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3471271A Expired GB1324286A (en) 1970-07-23 1971-07-23 Ionisation fire alarm

Country Status (15)

Country Link
US (1) US3767917A (en)
JP (3) JPS526080B1 (en)
AU (1) AU463927B2 (en)
CH (1) CH508251A (en)
DE (1) DE2130889B2 (en)
DK (1) DK130857B (en)
FI (1) FI56287C (en)
FR (1) FR2103672A5 (en)
GB (1) GB1324286A (en)
HK (1) HK70078A (en)
NL (1) NL7108647A (en)
NO (1) NO126976B (en)
SE (2) SE375871B (en)
YU (1) YU35684B (en)
ZA (1) ZA714783B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117560A (en) * 1982-03-09 1983-10-12 Emile Hugon Capacitive smoke detector
GB2278719A (en) * 1993-05-17 1994-12-07 Kilsen Sa Ionisation smoke detector

Families Citing this family (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2314567B2 (en) * 1973-03-23 1978-10-12 Siemens Ag, 1000 Berlin Und 8000 Muenchen Fire alarm
CH551057A (en) * 1973-04-17 1974-06-28 Cerberus Ag IONIZATION ALARM.
US3935465A (en) * 1973-04-24 1976-01-27 Geba-Gesellschaft Fuer Elektronische Brandmeldeanlagen Mbh Ionization analyzing air pollution, smoke and fire alarm device
US3909815A (en) * 1973-06-01 1975-09-30 Gamma Electronic Detector for fumes and combustion gases
US3900795A (en) * 1973-08-15 1975-08-19 Honeywell Inc Installation and test tool for ionization smoke detector
US3934145A (en) * 1973-10-25 1976-01-20 Emhart Corporation Ionization smoke detector and alarm system
US4074341A (en) * 1973-12-07 1978-02-14 Cerberus Ag Interlocked separable fire sensor construction
CA1042564A (en) * 1974-04-18 1978-11-14 Kanji Ishii Ionization type smoke sensor
US4081684A (en) * 1974-07-02 1978-03-28 Wieder Horst K Combustion product detector
US3961195A (en) * 1974-08-26 1976-06-01 Timothy John Newington Fire detector having means for heating the support member of an electrode to prevent formation of moisture thereon
SE7609408L (en) * 1975-09-05 1977-03-06 Elektornische Brandmeldeanlage DEVICE FOR DETERMINING A FOREMAL ON A SUBSTRATE
DE2539655B1 (en) * 1975-09-05 1977-02-10 Geba Gmbh & Co Detectors, in particular fire detectors
US4075487A (en) * 1976-05-14 1978-02-21 Patent Development & Management Company Ionization chamber assembly
US4053777A (en) * 1976-07-07 1977-10-11 Geba, Gesellschaft Fuer Elektronische Brandmeldeanlagen Mbh & Co. Accident- and tampering-proof attachment means of an object to a stationary support
CH600563A5 (en) * 1976-11-29 1978-06-15 Cerberus Ag
JPS53100295A (en) * 1977-02-14 1978-09-01 Omron Tateisi Electronics Co Ionization type smoke detector
US4238679A (en) * 1978-12-07 1980-12-09 Conrac Corporation Dual-chamber ionization smoke detector assembly
US4286159A (en) * 1979-04-10 1981-08-25 Hochiki Corporation Detector coupling mechanism
US4258261A (en) * 1979-05-07 1981-03-24 Pittway Corporation Electrode assembly for combustion products detector
CH639859A5 (en) * 1979-10-05 1983-12-15 Cerberus Ag DEVICE FOR REMOVING A FIRE DETECTOR FROM A BASE.
FR2473201A1 (en) * 1980-01-02 1981-07-10 Gamma Electronic CAPACITIVE SMOKE DETECTOR WITH LOW IONIZATION SOURCE
JPS6234399Y2 (en) * 1980-03-31 1987-09-02
US4396840A (en) * 1980-10-01 1983-08-02 Matsushita Electric Works, Ltd. Ionization type smoke sensing device
US4582996A (en) * 1982-04-08 1986-04-15 Cerberus Ag Electrode insulating member for ionization fire alarm
DE3341781A1 (en) * 1983-11-18 1985-05-30 Siemens AG, 1000 Berlin und 8000 München AUTOMATIC FIRE DETECTOR AND METHOD FOR PRODUCING AUTOMATIC FIRE DETECTORS
JPH0426946Y2 (en) * 1986-02-13 1992-06-29
FR2594953B1 (en) * 1986-02-25 1989-05-05 Lewiner Jacques SMOKE DETECTOR WITH IONIZATION CHAMBER
US4937562A (en) * 1987-12-26 1990-06-26 Hochiki Corp. Moisture-proof ionization smoke detector
US5021677A (en) * 1989-05-02 1991-06-04 Nohmi Bosai Kabushiki Kaisha Light-scattering-type smoke detector
JPH0390693U (en) * 1989-12-26 1991-09-17
JP3104102B2 (en) * 1992-04-25 2000-10-30 能美防災株式会社 Ionized smoke detector
JP3188983B2 (en) * 1992-04-25 2001-07-16 能美防災株式会社 Sensor base
EP0569712B1 (en) * 1992-04-25 1998-03-04 Nohmi Bosai Ltd. Fire detector
US5565852A (en) * 1992-11-30 1996-10-15 Sentrol, Inc. Smoke detector with digital display
DE9416314U1 (en) 1994-10-10 1994-12-01 Fritz Fuss Gmbh & Co, 72458 Albstadt smoke detector
WO1996021208A1 (en) * 1995-01-04 1996-07-11 Caradon Gent Limited Improvements in and relating to smoke detectors
JP3210868B2 (en) * 1996-10-11 2001-09-25 ニッタン株式会社 Ionized smoke detector
US6292105B1 (en) * 1998-12-23 2001-09-18 The Johns Hopkins University Thermal ionization detector
US6976883B2 (en) * 2003-05-20 2005-12-20 Walter Kidde Portable Equipment, Inc. Adaptor apparatus and method for interchanging smoke alarms
US7336165B2 (en) * 2005-01-18 2008-02-26 Fuchs Andrew M Retrofitting detectors into legacy detector systems
AU2011202975B2 (en) * 2011-06-21 2016-11-24 Commscope Technologies Llc Apparatus for Transmission Testing of a Telecommunications Jack
US9055664B1 (en) * 2013-03-12 2015-06-09 Larry J. Huff Tool for removing a smoke detector cover
EP3171347B1 (en) * 2014-07-14 2020-06-10 Fenwal Controls Of Japan, Ltd. Photoelectric smoke sensor
DE102014019773B4 (en) 2014-12-17 2023-12-07 Elmos Semiconductor Se Device and method for distinguishing between solid objects, cooking fumes and smoke using the display of a mobile telephone
DE102014019172B4 (en) 2014-12-17 2023-12-07 Elmos Semiconductor Se Device and method for distinguishing between solid objects, cooking fumes and smoke using a compensating optical measuring system
WO2017033499A1 (en) 2015-08-25 2017-03-02 日本フェンオール株式会社 Photoelectric smoke sensor
US10826231B2 (en) * 2016-05-03 2020-11-03 Autronica Fire & Security As Fire detector mounting assembly and method
CN111201686B (en) 2017-07-05 2022-06-07 哈勃股份有限公司 Weatherproof electrical enclosure with reinforcement
US11887450B2 (en) 2018-05-09 2024-01-30 Carrier Corporation Smoke chamber for multiwave multiangle smoke detector
US10878682B1 (en) * 2019-08-13 2020-12-29 Ronald Tucker Smoke detector
US20230009165A1 (en) * 2021-07-07 2023-01-12 Sidewalk Labs LLC Wireless occupancy sensors and methods for using the same

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3271756A (en) * 1960-03-22 1966-09-06 Harold J Burke Method and apparatus for detecting a hazardous condition
JPS446089Y1 (en) * 1966-03-30 1969-03-05
JPS4414767Y1 (en) * 1967-07-14 1969-06-24
US3560737A (en) * 1967-08-02 1971-02-02 Honeywell Inc Combustion products detector using a radioactive source and detector
JPS4833989U (en) * 1971-09-02 1973-04-24

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117560A (en) * 1982-03-09 1983-10-12 Emile Hugon Capacitive smoke detector
GB2278719A (en) * 1993-05-17 1994-12-07 Kilsen Sa Ionisation smoke detector
GB2278719B (en) * 1993-05-17 1997-03-26 Kilsen Sa Ionic smoke detector

Also Published As

Publication number Publication date
AU463927B2 (en) 1975-08-07
NL7108647A (en) 1972-01-25
JPS5082998A (en) 1975-07-04
FI56287C (en) 1979-12-10
JPS526080B1 (en) 1977-02-18
CH508251A (en) 1971-05-31
YU35684B (en) 1981-04-30
FI56287B (en) 1979-08-31
DK130857C (en) 1975-09-22
DK130857B (en) 1975-04-21
US3767917A (en) 1973-10-23
DE2130889B2 (en) 1973-04-19
AU3152871A (en) 1973-01-25
FR2103672A5 (en) 1972-04-14
ZA714783B (en) 1972-04-26
NO126976B (en) 1973-04-16
JPS5082999A (en) 1975-07-04
SE369794B (en) 1974-09-16
SE375871B (en) 1975-04-28
JPS5543545B2 (en) 1980-11-06
DE2130889A1 (en) 1972-02-03
YU180271A (en) 1980-09-25
HK70078A (en) 1978-12-08

Similar Documents

Publication Publication Date Title
GB1324286A (en) Ionisation fire alarm
ES433134A1 (en) Handbag alarm system
ZA762698B (en) Embedded housing for ore crusher
BE813068A (en) IONIZATION FIRE ALARM
JPS56156492A (en) Scroll type compressor
GB1217792A (en) Ionisation fire alarm
ES197895U (en) Ionization fire warnings. (Machine-translation by Google Translate, not legally binding)
CA998134A (en) Defeat resistant burglar alarm contact
SE333696B (en)
ES449385A1 (en) Fitting of a fluid temperature switch in a wall
JPS5243474A (en) Differential pressure measuring device
GB1277091A (en) Ionization type smoke detectors
GB1154663A (en) Improvements relating to Electrical Detection Apparatus and Method.
GB1176127A (en) Electrical Burglar Alarm Systems
JPS5382290A (en) Display device with alarm display
GB917044A (en) Area radiation monitor
GB1492193A (en) Fire detectors
CS192562B2 (en) Ionization smoke alarm box
ES381761A1 (en) Ionization smoke detector
HK58777A (en) Fire sensing system including an ionization chamber
GB1467592A (en) Ionization fire alarm
JPS51134662A (en) Electronic clock
GB1183936A (en) Improvements in or relating to Alarm Apparatus
GB1341435A (en) Pressure-operated electrical switch apparatus
FR2362454A1 (en) IONIZATION FIRE ALARM

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee