GB1566624A - Optical fire-detector - Google Patents
Optical fire-detector Download PDFInfo
- Publication number
- GB1566624A GB1566624A GB35588/77A GB3558877A GB1566624A GB 1566624 A GB1566624 A GB 1566624A GB 35588/77 A GB35588/77 A GB 35588/77A GB 3558877 A GB3558877 A GB 3558877A GB 1566624 A GB1566624 A GB 1566624A
- Authority
- GB
- United Kingdom
- Prior art keywords
- radiation
- detector
- fire
- phase
- summation
- 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
- 230000003287 optical effect Effects 0.000 title claims description 18
- 230000005855 radiation Effects 0.000 claims abstract description 71
- 239000000779 smoke Substances 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims description 7
- 238000005286 illumination Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 241001137251 Corvidae Species 0.000 claims description 2
- 230000003321 amplification Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 230000010363 phase shift Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 2
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
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)
- Investigating Or Analysing Materials By Optical Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7609670-0A SE395554B (sv) | 1976-09-01 | 1976-09-01 | Optisk branddetektor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1566624A true GB1566624A (en) | 1980-05-08 |
Family
ID=20328778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB35588/77A Expired GB1566624A (en) | 1976-09-01 | 1977-08-24 | Optical fire-detector |
Country Status (13)
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2051640B2 (de) * | 1970-10-21 | 1972-05-31 | Preußag AG, Feuerschutz, 2060 Bad Oldesloe | Verfahren zur flammenmeldung und flammenmelder zur durchfuehrung des verfahrens |
| GB1405615A (en) * | 1972-08-11 | 1975-09-10 | Chubb Fire Security Ltd | Fire alarms |
| SE7604502L (sv) * | 1976-04-15 | 1977-10-16 | Ericsson Telefon Ab L M | Optisk branddetektor |
-
1976
- 1976-09-01 SE SE7609670-0A patent/SE395554B/xx unknown
-
1977
- 1977-08-11 DE DE19772736224 patent/DE2736224A1/de active Granted
- 1977-08-15 CH CH994877A patent/CH621425A5/de not_active IP Right Cessation
- 1977-08-18 FI FI772470A patent/FI63125C/sv not_active IP Right Cessation
- 1977-08-22 CA CA285,212A patent/CA1102429A/en not_active Expired
- 1977-08-24 GB GB35588/77A patent/GB1566624A/en not_active Expired
- 1977-08-29 BE BE180500A patent/BE858192A/xx not_active IP Right Cessation
- 1977-08-31 NO NO773020A patent/NO140519C/no unknown
- 1977-08-31 DK DK386877A patent/DK148226C/da not_active IP Right Cessation
- 1977-08-31 FR FR7726485A patent/FR2363840A2/fr active Granted
- 1977-08-31 AU AU28384/77A patent/AU510627B2/en not_active Expired
- 1977-09-01 IT IT7727177A patent/IT1088004B/it active
- 1977-09-01 NL NL7709640A patent/NL7709640A/xx not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| FI772470A7 (fi) | 1978-03-02 |
| FI63125B (fi) | 1982-12-31 |
| CA1102429A (en) | 1981-06-02 |
| AU2838477A (en) | 1979-03-08 |
| CH621425A5 (en) | 1981-01-30 |
| DK148226B (da) | 1985-05-06 |
| DE2736224A1 (de) | 1978-03-09 |
| FI63125C (fi) | 1983-04-11 |
| SE395554B (sv) | 1977-08-15 |
| NO140519C (no) | 1979-09-12 |
| DE2736224C2 (enrdf_load_stackoverflow) | 1991-02-21 |
| AU510627B2 (en) | 1980-07-03 |
| NO140519B (no) | 1979-06-05 |
| DK148226C (da) | 1985-12-30 |
| NO773020L (no) | 1978-03-02 |
| FR2363840B2 (enrdf_load_stackoverflow) | 1983-02-04 |
| NL7709640A (nl) | 1978-03-03 |
| DK386877A (da) | 1978-03-02 |
| BE858192A (fr) | 1977-12-16 |
| FR2363840A2 (fr) | 1978-03-31 |
| IT1088004B (it) | 1985-06-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |