DK141948C - - Google Patents
Info
- Publication number
- DK141948C DK141948C DK182774A DK182774A DK141948C DK 141948 C DK141948 C DK 141948C DK 182774 A DK182774 A DK 182774A DK 182774 A DK182774 A DK 182774A DK 141948 C DK141948 C DK 141948C
- 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)
- Fire Alarms (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH474173 | 1973-04-03 | ||
| CH474173A CH554033A (en) | 1973-04-03 | 1973-04-03 | IOMIZATION FIRE DETECTION DEVICE. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK141948B DK141948B (en) | 1980-07-21 |
| DK141948C true DK141948C (en) | 1980-12-01 |
Family
ID=4281699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK182774AA DK141948B (en) | 1973-04-03 | 1974-04-02 | Fire alarm apparatus with radioactive source for producing ions. |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS503300A (en) |
| CH (1) | CH554033A (en) |
| DE (1) | DE2412557C3 (en) |
| DK (1) | DK141948B (en) |
| FI (1) | FI57496C (en) |
| FR (1) | FR2224819B1 (en) |
| GB (1) | GB1432531A (en) |
| NO (1) | NO137666C (en) |
| SE (1) | SE389570B (en) |
| ZA (1) | ZA741787B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE874157A (en) * | 1979-02-14 | 1979-05-29 | Inst Nat Radio Elements | ION DETECTOR |
| US4488044A (en) * | 1981-11-20 | 1984-12-11 | Pittway Corporation | Ionization chamber for smoke detector and the like |
| AT378431B (en) * | 1983-06-30 | 1985-08-12 | Siemens Ag Oesterreich | SAMPLE CHAMBER OF CONVENTIONAL SIZE FOR INSTALLATION OF AN IONIZATION SMOKE DETECTOR INSERT |
| JPS60135757A (en) * | 1983-12-23 | 1985-07-19 | Hochiki Corp | Gas sensor |
| NO158391C (en) * | 1985-02-08 | 1988-08-31 | Flaekt Ab | FIRE WARNING SYSTEM FOR LIVING ROOM. |
| EP0405473A3 (en) * | 1989-06-28 | 1991-05-02 | Pittway Corporation | Low profile detector with multi-sided source |
| JP2520357B2 (en) * | 1993-01-29 | 1996-07-31 | 三洋電機株式会社 | Automatic hair washer |
| JP3714926B2 (en) * | 2002-08-22 | 2005-11-09 | ホーチキ株式会社 | Sampling tube smoke detector |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL224264A (en) * | 1957-10-24 | |||
| CH486082A (en) * | 1969-05-19 | 1970-02-15 | Cerberus Ag | Ionization fire alarms |
-
1973
- 1973-04-03 CH CH474173A patent/CH554033A/en not_active IP Right Cessation
-
1974
- 1974-03-15 DE DE2412557A patent/DE2412557C3/en not_active Expired
- 1974-03-18 FR FR7409097A patent/FR2224819B1/fr not_active Expired
- 1974-03-19 ZA ZA00741787A patent/ZA741787B/en unknown
- 1974-04-02 JP JP49036692A patent/JPS503300A/ja active Pending
- 1974-04-02 NO NO741189A patent/NO137666C/en unknown
- 1974-04-02 DK DK182774AA patent/DK141948B/en not_active IP Right Cessation
- 1974-04-02 FI FI1013/74A patent/FI57496C/en active
- 1974-04-02 SE SE7404420A patent/SE389570B/en unknown
- 1974-04-03 GB GB1484074A patent/GB1432531A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| SE389570B (en) | 1976-11-08 |
| JPS503300A (en) | 1975-01-14 |
| GB1432531A (en) | 1976-04-22 |
| AU6701374A (en) | 1975-09-25 |
| FI57496B (en) | 1980-04-30 |
| NO741189L (en) | 1974-10-04 |
| NO137666B (en) | 1977-12-19 |
| CH554033A (en) | 1974-09-13 |
| DE2412557C3 (en) | 1982-02-18 |
| FR2224819A1 (en) | 1974-10-31 |
| FI57496C (en) | 1980-08-11 |
| DK141948B (en) | 1980-07-21 |
| ZA741787B (en) | 1975-03-26 |
| DE2412557B2 (en) | 1981-06-19 |
| DE2412557A1 (en) | 1974-10-24 |
| NO137666C (en) | 1978-04-12 |
| FR2224819B1 (en) | 1980-01-04 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PBP | Patent lapsed |