DK137099C - - Google Patents
Info
- Publication number
- DK137099C DK137099C DK175474A DK175474A DK137099C DK 137099 C DK137099 C DK 137099C DK 175474 A DK175474 A DK 175474A DK 175474 A DK175474 A DK 175474A DK 137099 C DK137099 C DK 137099C
- 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
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)
- Fire Alarms (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Alarm Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH462173A CH570016A5 (en) | 1973-03-30 | 1973-03-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
DK137099B DK137099B (en) | 1978-01-16 |
DK137099C true DK137099C (en) | 1978-06-12 |
Family
ID=4279532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK175474AA DK137099B (en) | 1973-03-30 | 1974-03-29 | Fire alarm device. |
Country Status (17)
Country | Link |
---|---|
US (1) | US3872449A (en) |
JP (1) | JPS5619671B2 (en) |
AT (1) | AT340807B (en) |
BE (1) | BE812331A (en) |
CA (1) | CA1063260A (en) |
CH (1) | CH570016A5 (en) |
DE (1) | DE2408374B2 (en) |
DK (1) | DK137099B (en) |
ES (1) | ES425125A1 (en) |
FI (1) | FI55420C (en) |
FR (1) | FR2223766B1 (en) |
GB (1) | GB1430035A (en) |
IT (1) | IT1014554B (en) |
NL (1) | NL7403973A (en) |
NO (1) | NO136383C (en) |
SE (1) | SE389569B (en) |
ZA (1) | ZA741754B (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5512635B2 (en) * | 1972-07-26 | 1980-04-03 | ||
CH576175A5 (en) * | 1974-12-19 | 1976-05-31 | Cerberus Ag | |
JPS5737265Y2 (en) * | 1976-07-07 | 1982-08-17 | ||
US4131888A (en) * | 1976-08-18 | 1978-12-26 | American District Telegraph Company | Dual projected-beam smoke detector |
US4091363A (en) * | 1977-01-03 | 1978-05-23 | Pittway Corporation | Self-contained fire detector with interconnection circuitry |
FR2386874A1 (en) * | 1977-04-08 | 1978-11-03 | Gamma Electronic | IONIZATION SMOKE DETECTOR ASSOCIATED WITH AN ELECTRONIC VELOCIMETRIC MEASUREMENT CIRCUIT |
US4222046A (en) * | 1978-07-31 | 1980-09-09 | Honeywell Inc. | Abnormal condition responsive means with periodic high sensitivity |
US4250500A (en) * | 1979-10-22 | 1981-02-10 | Rca Corporation | Smoke detector |
CA1148279A (en) * | 1979-12-14 | 1983-06-14 | Andreas Scheidweiler | Ionization smoke detector with increased operational reliability |
DE3127324A1 (en) * | 1981-07-10 | 1983-01-27 | Siemens AG, 1000 Berlin und 8000 München | METHOD AND ARRANGEMENT FOR INCREASING THE SENSITIVITY AND EMERGENCY SAFETY IN A DANGER, IN PARTICULAR FIRE DETECTING SYSTEM |
US4539488A (en) * | 1981-11-30 | 1985-09-03 | Zenith Electronics Corporation | Pulse wave to parabola wave converter |
JPS60126798A (en) * | 1983-12-13 | 1985-07-06 | ニッタン株式会社 | Environmental abnormality detector |
US5019805A (en) * | 1989-02-03 | 1991-05-28 | Flash-Alert Inc. | Smoke detector with strobed visual alarm and remote alarm coupling |
US6188318B1 (en) | 1999-06-29 | 2001-02-13 | Pittway Corp. | Dual-technology intrusion detector with pet immunity |
CN102455288B (en) * | 2010-10-15 | 2014-10-15 | 西门子公司 | Apparatus for carrying out calibration on photoelectric signal path of sensor device through online signal level monitoring |
DE102014019172B4 (en) | 2014-12-17 | 2023-12-07 | Elmos Semiconductor Se | Device and method for distinguishing between solid objects, cooking fumes and smoke using a compensating optical measuring system |
DE102014019773B4 (en) | 2014-12-17 | 2023-12-07 | Elmos Semiconductor Se | Device and method for distinguishing between solid objects, cooking fumes and smoke using the display of a mobile telephone |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2735007A (en) * | 1956-02-14 | Time-base generator | ||
US2811711A (en) * | 1951-05-19 | 1957-10-29 | Electronics Corp America | Fire method and apparatus |
US3582676A (en) * | 1968-09-24 | 1971-06-01 | Bendix Corp | Pulse length normalizing and short pulse eliminating circuit |
US3531692A (en) * | 1969-03-03 | 1970-09-29 | Combustion Eng | Activity detector having increased accuracy of response |
JPS482587U (en) * | 1971-05-25 | 1973-01-12 |
-
1973
- 1973-03-30 CH CH462173A patent/CH570016A5/xx not_active IP Right Cessation
-
1974
- 1974-02-21 DE DE2408374A patent/DE2408374B2/en not_active Ceased
- 1974-02-21 AT AT144074A patent/AT340807B/en not_active IP Right Cessation
- 1974-03-08 US US449287A patent/US3872449A/en not_active Expired - Lifetime
- 1974-03-14 FR FR7408640A patent/FR2223766B1/fr not_active Expired
- 1974-03-14 BE BE142033A patent/BE812331A/en not_active IP Right Cessation
- 1974-03-18 ZA ZA00741754A patent/ZA741754B/en unknown
- 1974-03-25 NL NL7403973A patent/NL7403973A/xx unknown
- 1974-03-27 NO NO741081A patent/NO136383C/en unknown
- 1974-03-28 CA CA196,310A patent/CA1063260A/en not_active Expired
- 1974-03-28 JP JP3406574A patent/JPS5619671B2/ja not_active Expired
- 1974-03-28 FI FI960/74A patent/FI55420C/en active
- 1974-03-29 SE SE7404260A patent/SE389569B/en unknown
- 1974-03-29 DK DK175474AA patent/DK137099B/en not_active IP Right Cessation
- 1974-03-29 GB GB1412074A patent/GB1430035A/en not_active Expired
- 1974-03-30 ES ES425125A patent/ES425125A1/en not_active Expired
- 1974-04-08 IT IT20649/74A patent/IT1014554B/en active
Also Published As
Publication number | Publication date |
---|---|
US3872449A (en) | 1975-03-18 |
BE812331A (en) | 1974-07-01 |
AU6689674A (en) | 1975-09-25 |
DE2408374A1 (en) | 1974-10-17 |
AT340807B (en) | 1978-01-10 |
SE389569B (en) | 1976-11-08 |
DK137099B (en) | 1978-01-16 |
DE2408374B2 (en) | 1978-06-01 |
ZA741754B (en) | 1975-01-29 |
NL7403973A (en) | 1974-10-02 |
CA1063260A (en) | 1979-09-25 |
FR2223766B1 (en) | 1978-12-01 |
FI55420C (en) | 1979-07-10 |
NO741081L (en) | 1974-10-01 |
GB1430035A (en) | 1976-03-31 |
ES425125A1 (en) | 1976-06-16 |
NO136383B (en) | 1977-05-16 |
IT1014554B (en) | 1977-04-30 |
ATA144074A (en) | 1977-04-15 |
FR2223766A1 (en) | 1974-10-25 |
JPS49131099A (en) | 1974-12-16 |
NO136383C (en) | 1977-08-31 |
CH570016A5 (en) | 1975-11-28 |
FI55420B (en) | 1979-03-30 |
JPS5619671B2 (en) | 1981-05-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PBP | Patent lapsed |