BE726514A - - Google Patents
Info
- Publication number
- BE726514A BE726514A BE726514DA BE726514A BE 726514 A BE726514 A BE 726514A BE 726514D A BE726514D A BE 726514DA BE 726514 A BE726514 A BE 726514A
- Authority
- BE
- Belgium
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
- G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/26—Electrical actuation by proximity of an intruder causing variation in capacitance or inductance of a circuit
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fire-Detection Mechanisms (AREA)
- Alarm Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US71195268A | 1968-03-11 | 1968-03-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE726514A true BE726514A (es) | 1969-07-07 |
Family
ID=24860179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE726514D BE726514A (es) | 1968-03-11 | 1969-01-06 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3634839A (es) |
| BE (1) | BE726514A (es) |
| CA (1) | CA926493A (es) |
| DE (1) | DE1907587B2 (es) |
| FR (1) | FR1600293A (es) |
| GB (1) | GB1258666A (es) |
| NL (1) | NL6902159A (es) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3764853A (en) * | 1971-12-27 | 1973-10-09 | R Beachley | Means for dual level ground fault protection of a.c. circuits |
| JPS5737916B2 (es) * | 1972-07-14 | 1982-08-12 | ||
| US3988713A (en) * | 1974-06-19 | 1976-10-26 | Sundstrand Data Control, Inc. | Aircraft ground proximity warning instrument |
| JPS52142999A (en) * | 1976-05-24 | 1977-11-29 | Nohmi Bosai Kogyo Co Ltd | Fire alarm facility |
| US4131888A (en) * | 1976-08-18 | 1978-12-26 | American District Telegraph Company | Dual projected-beam smoke detector |
| JPS5760147Y2 (es) * | 1977-07-04 | 1982-12-22 | ||
| US4218716A (en) * | 1977-10-14 | 1980-08-19 | General Electric Company | Programmable fault detecting relay for a transformer |
| US4325145A (en) * | 1978-04-06 | 1982-04-13 | Corbett Marshall J | Thermal detection system |
| DE3107830A1 (de) * | 1981-02-25 | 1982-09-09 | Auergesellschaft Gmbh, 1000 Berlin | Verfahren und anordnung zur erhaltung des alarmzustandes eines gaswarngeraetes |
| EP0571843B1 (en) * | 1992-05-25 | 1999-08-04 | Nohmi Bosai Ltd. | Fire detector |
| US6107925A (en) * | 1993-06-14 | 2000-08-22 | Edwards Systems Technology, Inc. | Method for dynamically adjusting criteria for detecting fire through smoke concentration |
| CN1209896A (zh) * | 1996-01-29 | 1999-03-03 | 恩格尔哈德传感器技术公司 | 动态地调整火灾探测判据的方法 |
| DE19850579C2 (de) * | 1998-11-03 | 2001-09-13 | Honeywell Sa | Verfahren zum Betreiben eines Meßumformers |
| AU2003268142A1 (en) * | 2002-08-23 | 2004-03-11 | General Electric Company | Rapidly responding, false detection immune alarm signal producing smoke detector |
| CA2560982C (en) | 2004-05-25 | 2014-11-18 | Nortel Networks Limited | Connectivity fault notification |
| GB2516801A (en) | 2012-05-24 | 2015-02-04 | Douglas H Lundy | Threat detection system and method |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2678433A (en) * | 1950-07-20 | 1954-05-11 | American District Telegraph Co | Fire alarm system |
| US2767393A (en) * | 1953-08-03 | 1956-10-16 | Kidde & Co Walter | Approach alarm system with unwanted signal elimination |
| US2821668A (en) * | 1954-09-03 | 1958-01-28 | Westinghouse Electric Corp | Time delay relay means |
| US2794974A (en) * | 1955-01-24 | 1957-06-04 | Kidde & Co Walter | Compensation for turbulence and other efects in intruder detection systems |
| US2877453A (en) * | 1956-01-17 | 1959-03-10 | Jr Alfred L Mendenhall | Smoke detecting device |
| US2824297A (en) * | 1956-03-27 | 1958-02-18 | Conrad S Josias | Automatic scale-changing apparatus |
| US2982943A (en) * | 1956-06-04 | 1961-05-02 | Dresser Ind | Signal failure indication and system control |
| US3120758A (en) * | 1960-06-01 | 1964-02-11 | Michael J Craddock | Electrical testing equipment |
| US3331065A (en) * | 1962-05-31 | 1967-07-11 | Sylvania Electric Prod | Signal processing circuit for intrusion alarm system |
| US3339195A (en) * | 1963-12-06 | 1967-08-29 | Owens Illinois Inc | Light responsive circuit for inhibiting false signals in article delivery and inspection devices |
-
1968
- 1968-03-11 US US711952A patent/US3634839A/en not_active Expired - Lifetime
- 1968-10-21 CA CA033056A patent/CA926493A/en not_active Expired
- 1968-12-31 FR FR1600293D patent/FR1600293A/fr not_active Expired
-
1969
- 1969-01-06 BE BE726514D patent/BE726514A/xx not_active IP Right Cessation
- 1969-02-11 NL NL6902159A patent/NL6902159A/xx unknown
- 1969-02-11 GB GB1258666D patent/GB1258666A/en not_active Expired
- 1969-02-14 DE DE19691907587 patent/DE1907587B2/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| NL6902159A (es) | 1969-09-15 |
| GB1258666A (es) | 1971-12-30 |
| US3634839A (en) | 1972-01-11 |
| DE1907587B2 (de) | 1972-02-17 |
| DE1907587A1 (de) | 1969-12-04 |
| FR1600293A (es) | 1970-07-20 |
| CA926493A (en) | 1973-05-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE | Patent lapsed |
Owner name: AMERICAN DISTRICT TELEGFRAPH CY Effective date: 19860131 |