BE803464A - Avertisseurs d'incendie - Google Patents

Avertisseurs d'incendie

Info

Publication number: BE803464A
Authority: BE; Belgium
Prior art keywords: fire warning; warning; fire
Prior art date: 1972-08-11

Application number

BE134448A

Other languages

English (en)

Original Assignee

Chubb Fire Security Ltd

Priority date (The priority date 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 date listed.)

1972-08-11

Filing date

1973-08-10

Publication date

1974-02-11

1972-08-11 Priority claimed from GB3763372A external-priority patent/GB1405615A/en

1973-08-10 Application filed by Chubb Fire Security Ltd filed Critical Chubb Fire Security Ltd

1974-02-11 Publication of BE803464A publication Critical patent/BE803464A/fr

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

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)

BE134448A 1972-08-11 1973-08-10 Avertisseurs d'incendie BE803464A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB3763372A GB1405615A (en)	1972-08-11	1972-08-11	Fire alarms

Publications (1)

Publication Number	Publication Date
BE803464A true BE803464A (fr)	1974-02-11

Family

ID=10397860

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE134448A BE803464A (fr)	1972-08-11	1973-08-10	Avertisseurs d'incendie

Country Status (4)

Country	Link
US (1)	US3846772A (fr)
BE (1)	BE803464A (fr)
CA (1)	CA1010969A (fr)
ZA (1)	ZA735343B (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE7604502L (sv) *	1976-04-15	1977-10-16	Ericsson Telefon Ab L M	Optisk branddetektor
US4131888A (en) *	1976-08-18	1978-12-26	American District Telegraph Company	Dual projected-beam smoke detector
JPS53144387A (en) *	1977-05-23	1978-12-15	Hochiki Co	Depreciation type detector
US4280495A (en) *	1978-11-24	1981-07-28	Sarns, Inc.	Air emboli detection
GB2044504B (en) *	1979-03-17	1983-04-20	Hochiki Co	Count discriminating fire detector
AU533232B2 (en) *	1979-06-27	1983-11-10	Hochiki Kabushiki Kaisha	Photoelectric detector
US4316184A (en) *	1979-07-27	1982-02-16	Pittway Corporation	Combination combustion-products detector
US4322723A (en) *	1980-09-08	1982-03-30	Combustion Engineering, Inc.	Fault detection in a flame scanner
US4471346A (en) *	1981-06-02	1984-09-11	Eberhard Faber, Inc.	Smoke detector
US5321494A (en) *	1992-03-23	1994-06-14	Eastman Kodak Company	Subtractive measurement method and apparatus for CRT output intensity measurement

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2794974A (en) *	1955-01-24	1957-06-04	Kidde & Co Walter	Compensation for turbulence and other efects in intruder detection systems
US3461443A (en) *	1966-11-07	1969-08-12	Alfred W Vasel	Smoke detector with means indicating the failure of the light source
US3566385A (en) *	1968-04-22	1971-02-23	Nat Res Dev	Fire detecting apparatus sensitive to refraction
US3723746A (en) *	1970-01-07	1973-03-27	Nat Res Dev	Fire detecting apparatus sensitive to refraction

1973
- 1973-08-06 ZA ZA735343A patent/ZA735343B/xx unknown
- 1973-08-06 US US00385708A patent/US3846772A/en not_active Expired - Lifetime
- 1973-08-08 CA CA178,298A patent/CA1010969A/en not_active Expired
- 1973-08-10 BE BE134448A patent/BE803464A/fr not_active IP Right Cessation

Also Published As

Publication number	Publication date
ZA735343B (en)	1974-09-25
CA1010969A (en)	1977-05-24
US3846772A (en)	1974-11-05

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Legal Events

Date	Code	Title	Description
1993-01-01	RE20	Patent expired	Owner name: CHUBB FIRE SECURITY LTD Effective date: 19930810

Date

Code

Title

Description

1993-01-01

RE20

Patent expired

Owner name: CHUBB FIRE SECURITY LTD

Effective date: 19930810