GB1430891A - Ionization fire sensors - Google Patents
Ionization fire sensorsInfo
- Publication number
- GB1430891A GB1430891A GB1684874A GB1684874A GB1430891A GB 1430891 A GB1430891 A GB 1430891A GB 1684874 A GB1684874 A GB 1684874A GB 1684874 A GB1684874 A GB 1684874A GB 1430891 A GB1430891 A GB 1430891A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- slit
- housing
- chamber
- air
- 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
Links
- 241000202252 Cerberus Species 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 abstract 1
- 230000005865 ionizing radiation Effects 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 239000012811 non-conductive material Substances 0.000 abstract 1
- 239000012857 radioactive material Substances 0.000 abstract 1
- 239000000779 smoke Substances 0.000 abstract 1
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)
- Investigating Or Analysing Materials By Optical Means (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH551973A CH551057A (de) | 1973-04-17 | 1973-04-17 | Ionisationsfeuermelder. |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1430891A true GB1430891A (en) | 1976-04-07 |
Family
ID=4294978
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1684874A Expired GB1430891A (en) | 1973-04-17 | 1974-04-17 | Ionization fire sensors |
Country Status (23)
Country | Link |
---|---|
US (1) | US3908957A (de) |
JP (1) | JPS49131798A (de) |
BE (1) | BE813068A (de) |
BR (1) | BR7403018D0 (de) |
CA (1) | CA998783A (de) |
CH (1) | CH551057A (de) |
CS (1) | CS216229B2 (de) |
DD (1) | DD111483A5 (de) |
DE (1) | DE2415479B2 (de) |
DK (1) | DK150415C (de) |
ES (1) | ES424918A1 (de) |
FI (1) | FI61768C (de) |
FR (1) | FR2226714B1 (de) |
GB (1) | GB1430891A (de) |
HU (1) | HU175210B (de) |
IL (1) | IL44507A (de) |
IT (1) | IT1006402B (de) |
NL (1) | NL177633C (de) |
NO (1) | NO139581C (de) |
PL (1) | PL90429B1 (de) |
SE (1) | SE396491B (de) |
YU (1) | YU35685B (de) |
ZA (1) | ZA742077B (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2117560A (en) * | 1982-03-09 | 1983-10-12 | Emile Hugon | Capacitive smoke detector |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2652970C3 (de) * | 1976-11-22 | 1979-09-06 | Hartwig Ing.(Grad.) 2409 Scharbeutz Beyersdorf | Ionisations-Brandmelder |
US4150373A (en) * | 1977-01-27 | 1979-04-17 | Ried Jr Louis | Ionization particle detector |
JPS6234399Y2 (de) * | 1980-03-31 | 1987-09-02 | ||
CH648943A5 (de) * | 1980-05-09 | 1985-04-15 | Cerberus Ag | Rauchmelder. |
US4439683A (en) * | 1981-02-11 | 1984-03-27 | General Signal Corporation | Ionization smoke detector |
US4488044A (en) * | 1981-11-20 | 1984-12-11 | Pittway Corporation | Ionization chamber for smoke detector and the like |
US4529976A (en) * | 1982-10-29 | 1985-07-16 | Frederick M. Jameson | Smoke detector with masking shield |
JPH044316Y2 (de) * | 1985-09-30 | 1992-02-07 | ||
FR2594953B1 (fr) * | 1986-02-25 | 1989-05-05 | Lewiner Jacques | Detecteur de fumee a chambre d'ionisation |
JPS63239592A (ja) * | 1987-03-27 | 1988-10-05 | ホーチキ株式会社 | 光電式煙感知器 |
EP0338218B1 (de) * | 1988-03-30 | 1993-09-15 | Cerberus Ag | Verfahren zur Brandfrüherkennung |
US5327119A (en) * | 1989-12-22 | 1994-07-05 | Hochiki Kabushiki Kaisha | Ionizing smoke sensor |
CH681932A5 (de) * | 1990-12-04 | 1993-06-15 | Cerberus Ag | |
AU667102B2 (en) * | 1992-05-14 | 1996-03-07 | Vision Systems Limited | Gas sampling point for smoke/pollution detection systems |
WO1993023735A1 (en) * | 1992-05-14 | 1993-11-25 | I.E.I. Pty. Ltd. | Gas sampling point for smoke/pollution detection systems |
US5856784A (en) * | 1997-04-23 | 1999-01-05 | Pittway Corporation | Low profile ionization chamber |
US6057774A (en) * | 1999-01-21 | 2000-05-02 | Brk Brands, Inc. | Smoke alarm with anti-dust screen |
GB0213854D0 (en) * | 2002-06-15 | 2002-07-24 | Aea Technology Plc | Radioactive sources |
US9013316B2 (en) * | 2011-07-28 | 2015-04-21 | Finsecur | Smoke detector |
GB201219488D0 (en) | 2012-10-30 | 2012-12-12 | Univ Sussex | Apparatus for sensing ionic current and ionising radiation |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3319069A (en) * | 1964-08-27 | 1967-05-09 | American District Telegraph Co | Smoke detecting radiation sensitive fire alarm system |
CH475614A (de) * | 1968-06-18 | 1969-07-15 | Cerberus Ag Werke Fuer Elektro | Ionisationsfeuermelder |
GB1277091A (en) * | 1968-07-11 | 1972-06-07 | Nittan Co Ltd | Ionization type smoke detectors |
CH491449A (de) * | 1969-05-19 | 1970-05-31 | Cerberus Ag | Rauchdetektoranordnung mit mindestens einer Rauchmesskammer |
CH486082A (de) * | 1969-05-19 | 1970-02-15 | Cerberus Ag | Ionisationsfeuermelder |
CH508251A (de) * | 1970-07-23 | 1971-05-31 | Cerberus Ag | Ionisationsfeuermelder |
US3728706A (en) * | 1970-09-28 | 1973-04-17 | Gen Signal Corp | System for indicating aerosols in the atmosphere |
BE793205A (fr) * | 1971-12-30 | 1973-04-16 | Preussag Ag Feuerschutz | Avertisseur d'incendie a ionisation |
-
1973
- 1973-04-17 CH CH551973A patent/CH551057A/de not_active IP Right Cessation
-
1974
- 1974-03-27 IL IL44507A patent/IL44507A/en unknown
- 1974-03-29 YU YU891/74A patent/YU35685B/xx unknown
- 1974-03-29 DE DE2415479A patent/DE2415479B2/de active Granted
- 1974-03-29 BE BE142655A patent/BE813068A/xx not_active IP Right Cessation
- 1974-04-01 FR FR7411564A patent/FR2226714B1/fr not_active Expired
- 1974-04-02 ZA ZA00742077A patent/ZA742077B/xx unknown
- 1974-04-03 JP JP49037056A patent/JPS49131798A/ja active Pending
- 1974-04-03 ES ES424918A patent/ES424918A1/es not_active Expired
- 1974-04-04 US US457841A patent/US3908957A/en not_active Expired - Lifetime
- 1974-04-08 NL NLAANVRAGE7404783,A patent/NL177633C/xx not_active IP Right Cessation
- 1974-04-09 IT IT7421073A patent/IT1006402B/it active
- 1974-04-10 SE SE7404871A patent/SE396491B/xx not_active IP Right Cessation
- 1974-04-11 CA CA197,527A patent/CA998783A/en not_active Expired
- 1974-04-11 FI FI1124/74A patent/FI61768C/fi active
- 1974-04-12 CS CS742663A patent/CS216229B2/cs unknown
- 1974-04-15 DD DD177896A patent/DD111483A5/xx unknown
- 1974-04-16 NO NO741357A patent/NO139581C/no unknown
- 1974-04-16 BR BR3018/74A patent/BR7403018D0/pt unknown
- 1974-04-16 PL PL1974170389A patent/PL90429B1/pl unknown
- 1974-04-16 DK DK208174A patent/DK150415C/da not_active IP Right Cessation
- 1974-04-17 HU HU74CE995A patent/HU175210B/hu unknown
- 1974-04-17 GB GB1684874A patent/GB1430891A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2117560A (en) * | 1982-03-09 | 1983-10-12 | Emile Hugon | Capacitive smoke detector |
Also Published As
Publication number | Publication date |
---|---|
DK150415B (da) | 1987-02-23 |
NO139581B (no) | 1978-12-27 |
FI61768B (fi) | 1982-05-31 |
BE813068A (fr) | 1974-07-15 |
IL44507A0 (en) | 1974-06-30 |
CH551057A (de) | 1974-06-28 |
NO741357L (no) | 1974-10-18 |
CA998783A (en) | 1976-10-19 |
DK150415C (da) | 1987-07-13 |
SE396491B (sv) | 1977-09-19 |
NL7404783A (de) | 1974-10-21 |
IT1006402B (it) | 1976-09-30 |
YU35685B (en) | 1981-04-30 |
IL44507A (en) | 1977-07-31 |
DE2415479C3 (de) | 1987-12-03 |
FI61768C (fi) | 1982-09-10 |
FR2226714B1 (de) | 1979-03-16 |
US3908957A (en) | 1975-09-30 |
FR2226714A1 (de) | 1974-11-15 |
BR7403018D0 (pt) | 1974-11-19 |
HU175210B (hu) | 1980-06-28 |
JPS49131798A (de) | 1974-12-17 |
DE2415479B2 (de) | 1980-09-04 |
PL90429B1 (de) | 1977-01-31 |
NL177633C (nl) | 1985-10-16 |
CS216229B2 (en) | 1982-10-29 |
NL177633B (nl) | 1985-05-17 |
NO139581C (no) | 1979-04-04 |
AU6753274A (en) | 1975-10-09 |
ES424918A1 (es) | 1976-05-16 |
DD111483A5 (de) | 1975-02-12 |
ZA742077B (en) | 1975-04-30 |
YU89174A (en) | 1980-09-25 |
DE2415479A1 (de) | 1974-11-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |