DK396174A - - Google Patents
Info
- Publication number
- DK396174A DK396174A DK396174A DK396174A DK396174A DK 396174 A DK396174 A DK 396174A DK 396174 A DK396174 A DK 396174A DK 396174 A DK396174 A DK 396174A DK 396174 A DK396174 A DK 396174A
- Authority
- DK
- Denmark
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA734995A ZA734995B (en) | 1973-07-23 | 1973-07-23 | Improvemente in or relating to fire detectors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DK396174A true DK396174A (de) | 1975-03-03 |
Family
ID=25566610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK396174A DK396174A (de) | 1973-07-23 | 1974-07-23 |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3980928A (de) |
| JP (1) | JPS5718240B2 (de) |
| CA (1) | CA1030634A (de) |
| CH (1) | CH585446A5 (de) |
| DE (1) | DE2435053B2 (de) |
| DK (1) | DK396174A (de) |
| FR (1) | FR2238506B1 (de) |
| GB (1) | GB1458098A (de) |
| IN (1) | IN139160B (de) |
| ZA (1) | ZA734995B (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5878B2 (ja) * | 1976-01-30 | 1983-01-05 | 松下電工株式会社 | イオン化式煙感知器 |
| US4091430A (en) * | 1976-11-11 | 1978-05-23 | Rca Corporation | Guard circuit for high impedance signal circuits |
| DE2711457C2 (de) * | 1977-03-16 | 1985-06-27 | Siemens AG, 1000 Berlin und 8000 München | Ionisationsbrandmelder |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3529201A (en) * | 1968-11-12 | 1970-09-15 | United States Steel Corp | Glow discharge suppressing insulator |
| DE2029485B2 (de) * | 1969-06-21 | 1971-11-25 | Nittan Co. Ltd., Tokio | Ionisations rauchfuehler |
| US3824422A (en) * | 1972-06-27 | 1974-07-16 | Anglo Amer Corp South Africa | Smoke detectors |
-
1973
- 1973-07-23 ZA ZA734995A patent/ZA734995B/xx unknown
-
1974
- 1974-07-19 CH CH1000974A patent/CH585446A5/xx not_active IP Right Cessation
- 1974-07-20 DE DE2435053A patent/DE2435053B2/de not_active Withdrawn
- 1974-07-22 US US05/490,781 patent/US3980928A/en not_active Expired - Lifetime
- 1974-07-22 CA CA205,251A patent/CA1030634A/en not_active Expired
- 1974-07-22 GB GB3242274A patent/GB1458098A/en not_active Expired
- 1974-07-23 DK DK396174A patent/DK396174A/da unknown
- 1974-07-23 JP JP8452474A patent/JPS5718240B2/ja not_active Expired
- 1974-07-23 FR FR7425524A patent/FR2238506B1/fr not_active Expired
- 1974-09-28 IN IN2188/CAL/74A patent/IN139160B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IN139160B (de) | 1976-05-15 |
| US3980928A (en) | 1976-09-14 |
| DE2435053B2 (de) | 1980-02-07 |
| ZA734995B (en) | 1974-10-30 |
| FR2238506B1 (de) | 1977-06-24 |
| GB1458098A (en) | 1976-12-08 |
| DE2435053A1 (de) | 1975-04-24 |
| AU7150774A (en) | 1976-01-22 |
| CH585446A5 (de) | 1977-02-28 |
| JPS5718240B2 (de) | 1982-04-15 |
| CA1030634A (en) | 1978-05-02 |
| FR2238506A1 (de) | 1975-02-21 |
| JPS5072598A (de) | 1975-06-16 |