JPS4953494A - - Google Patents
Info
- Publication number
- JPS4953494A JPS4953494A JP48072699A JP7269973A JPS4953494A JP S4953494 A JPS4953494 A JP S4953494A JP 48072699 A JP48072699 A JP 48072699A JP 7269973 A JP7269973 A JP 7269973A JP S4953494 A JPS4953494 A JP S4953494A
- Authority
- JP
- Japan
- 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
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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
- G01N27/64—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
- G01N27/66—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber and measuring current or voltage
Landscapes
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Emergency Management (AREA)
- Toxicology (AREA)
- Business, Economics & Management (AREA)
- Electrochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fire-Detection Mechanisms (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA724440A ZA724440B (en) | 1972-06-27 | 1972-06-27 | Smoke detectors |
| ZA728084 | 1972-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4953494A true JPS4953494A (en]) | 1974-05-24 |
Family
ID=27131055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP48072699A Pending JPS4953494A (en]) | 1972-06-27 | 1973-06-27 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3824422A (en]) |
| JP (1) | JPS4953494A (en]) |
| AU (1) | AU475495B2 (en]) |
| CA (1) | CA990865A (en]) |
| CH (1) | CH566060A5 (en]) |
| DE (1) | DE2332424C3 (en]) |
| FR (1) | FR2191731A5 (en]) |
| GB (1) | GB1379535A (en]) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS633253A (ja) * | 1986-06-24 | 1988-01-08 | Nemoto Tokushu Kagaku Kk | エアロゾル濃度計測装置 |
| JPH02111896U (en]) * | 1989-02-20 | 1990-09-06 |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA734995B (en) * | 1973-07-23 | 1974-10-30 | Anglo Amer Corp South Africa | Improvemente in or relating to fire detectors |
| JPS5552558Y2 (en]) * | 1975-02-10 | 1980-12-05 | ||
| US4245174A (en) | 1978-04-24 | 1981-01-13 | Isotec Industries Limited | Dual ionization chamber |
| US6040523A (en) * | 1996-12-11 | 2000-03-21 | Raytheon Company | Snap-fit design of an airborne missile systems seeker/detector section using engineering plastics |
| US6057774A (en) * | 1999-01-21 | 2000-05-02 | Brk Brands, Inc. | Smoke alarm with anti-dust screen |
| DE102008032145B4 (de) * | 2008-07-08 | 2012-12-06 | Techem Energy Services Gmbh | Warnmelder mit einer zur Umgebung offenen Detektionskammer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3769917A (en) * | 1971-12-20 | 1973-11-06 | Pullman Inc | Freight bracing apparatus |
-
1973
- 1973-06-25 US US00373317A patent/US3824422A/en not_active Expired - Lifetime
- 1973-06-26 DE DE2332424A patent/DE2332424C3/de not_active Expired
- 1973-06-26 CA CA174,945A patent/CA990865A/en not_active Expired
- 1973-06-26 AU AU57364/73A patent/AU475495B2/en not_active Expired
- 1973-06-27 CH CH934873A patent/CH566060A5/xx not_active IP Right Cessation
- 1973-06-27 FR FR7323496A patent/FR2191731A5/fr not_active Expired
- 1973-06-27 JP JP48072699A patent/JPS4953494A/ja active Pending
- 1973-06-27 GB GB3046473A patent/GB1379535A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS633253A (ja) * | 1986-06-24 | 1988-01-08 | Nemoto Tokushu Kagaku Kk | エアロゾル濃度計測装置 |
| JPH02111896U (en]) * | 1989-02-20 | 1990-09-06 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2332424B2 (de) | 1977-10-27 |
| AU475495B2 (en) | 1976-08-26 |
| DE2332424C3 (de) | 1978-06-22 |
| FR2191731A5 (en]) | 1974-02-01 |
| CH566060A5 (en]) | 1975-08-29 |
| DE2332424A1 (de) | 1974-01-31 |
| US3824422A (en) | 1974-07-16 |
| AU5736473A (en) | 1975-01-09 |
| GB1379535A (en) | 1975-01-02 |
| CA990865A (en) | 1976-06-08 |