GB2019642B - Ionization smoke detector - Google Patents
Ionization smoke detectorInfo
- Publication number
- GB2019642B GB2019642B GB7845803A GB7845803A GB2019642B GB 2019642 B GB2019642 B GB 2019642B GB 7845803 A GB7845803 A GB 7845803A GB 7845803 A GB7845803 A GB 7845803A GB 2019642 B GB2019642 B GB 2019642B
- Authority
- GB
- United Kingdom
- Prior art keywords
- smoke detector
- ionization smoke
- ionization
- detector
- smoke
- 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
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J41/00—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas; Discharge tubes for evacuation by diffusion of ions
- H01J41/02—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas
- H01J41/08—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas with ionisation by means of radioactive substances, e.g. alphatrons
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Fire-Detection Mechanisms (AREA)
- Measurement Of Radiation (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA301,975A CA1109570A (en) | 1978-04-19 | 1978-04-19 | Dual ionization chamber |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2019642A GB2019642A (en) | 1979-10-31 |
GB2019642B true GB2019642B (en) | 1982-12-15 |
Family
ID=4111341
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7845803A Expired GB2019642B (en) | 1978-04-19 | 1978-11-23 | Ionization smoke detector |
Country Status (4)
Country | Link |
---|---|
CA (1) | CA1109570A (en) |
DE (1) | DE2851820A1 (en) |
GB (1) | GB2019642B (en) |
SE (1) | SE7812025L (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3041137C2 (en) * | 1980-10-31 | 1984-09-20 | Siemens AG, 1000 Berlin und 8000 München | Capacitive gas detector |
US20120146798A1 (en) * | 2009-07-08 | 2012-06-14 | Michael Dziekan | Method of utilizing ionization chambers to detect radiation and aerosolized radioactive particles |
-
1978
- 1978-04-19 CA CA301,975A patent/CA1109570A/en not_active Expired
- 1978-11-22 SE SE7812025A patent/SE7812025L/en not_active Application Discontinuation
- 1978-11-23 GB GB7845803A patent/GB2019642B/en not_active Expired
- 1978-11-30 DE DE19782851820 patent/DE2851820A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE2851820A1 (en) | 1979-10-31 |
SE7812025L (en) | 1979-10-20 |
CA1109570A (en) | 1981-09-22 |
GB2019642A (en) | 1979-10-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |