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GB1179409A - Improvements in or relating to Smoke Detectors - Google Patents

Improvements in or relating to Smoke Detectors

Info

Publication number
GB1179409A
GB1179409A GB39985/67A GB3998567A GB1179409A GB 1179409 A GB1179409 A GB 1179409A GB 39985/67 A GB39985/67 A GB 39985/67A GB 3998567 A GB3998567 A GB 3998567A GB 1179409 A GB1179409 A GB 1179409A
Authority
GB
United Kingdom
Prior art keywords
relay
winding
line
capacitor
negative
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB39985/67A
Inventor
Colin Ashton Eaton
William Walter Cozens
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Walter Kidde Ltd
Original Assignee
Walter Kidde 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.)
Filing date
Publication date
Application filed by Walter Kidde Ltd filed Critical Walter Kidde Ltd
Priority to GB39985/67A priority Critical patent/GB1179409A/en
Priority to DE19671673329 priority patent/DE1673329A1/en
Priority to SE16175/67A priority patent/SE343969B/xx
Priority to FR129735A priority patent/FR1547849A/en
Priority to NO17070767A priority patent/NO122115B/no
Priority to DK591767AA priority patent/DK122549B/en
Priority to BE707196D priority patent/BE707196A/xx
Priority to NL6716159A priority patent/NL6716159A/xx
Priority to US690320A priority patent/US3504184A/en
Publication of GB1179409A publication Critical patent/GB1179409A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
    • 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
    • G08B17/107—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 for detecting light-scattering due to smoke
    • 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)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

1,179,409. Systems depending on two or more sources. WALTER KIDDE CO. Ltd. 27 Nov., 1967 [28 Nov., 1966; 31 Aug., 1967], No. 53226/66. Heading H2H. [Also in Division G1] A stabilized power supply circuit for a unit circuit Cr of a photo-electric smoke detector comprises a transformer with a mains inlet and 24 v. and 40 v. secondary windings SW1 and SW2. The winding SW1 is connected in parallel with a relay R 2 and lamps 12 through relay switches R 2 S 1 and R 2 S 2 , so that with the relay R 2 energized the lamps are connected to the winding SW 1 . The winding SW 2 is connected to a rectifier bridge B and the bridge output is connected with a smoothing capacitor C 1 , and the negative line with a Zener diode Z connected via a 5K resistor R 3 to the positive line. The junction of the diode Z and resistor R 3 is connected to the base of a transistor T 3 and to a capacitor C 2 leading to the negative line. The transistor collector leads to the positive line and also the emitter, a capacitor C 3 leading to the negative line. Relay switches R 2 S 3 , R 2 S 4 connect the negative and positive lines to the circuit Cr when the relay R 2 is energized. A mains failure will lead to the switches R 2 S 3 , R 2 S 4 connecting the supply to a standby battery unit By.
GB39985/67A 1966-11-28 1966-11-28 Improvements in or relating to Smoke Detectors Expired GB1179409A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
GB39985/67A GB1179409A (en) 1966-11-28 1966-11-28 Improvements in or relating to Smoke Detectors
DE19671673329 DE1673329A1 (en) 1966-11-28 1967-11-23 Smoke detector device
SE16175/67A SE343969B (en) 1966-11-28 1967-11-24
FR129735A FR1547849A (en) 1966-11-28 1967-11-27 Smoke detector device
NO17070767A NO122115B (en) 1966-11-28 1967-11-27
DK591767AA DK122549B (en) 1966-11-28 1967-11-27 Smoke detector with a visual function monitoring control.
BE707196D BE707196A (en) 1966-11-28 1967-11-28
NL6716159A NL6716159A (en) 1966-11-28 1967-11-28
US690320A US3504184A (en) 1966-11-28 1967-12-13 Radiation sensitive smoke detector using light conducting means

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB39985/67A GB1179409A (en) 1966-11-28 1966-11-28 Improvements in or relating to Smoke Detectors
GB5322666 1966-11-28
US69032067A 1967-12-13 1967-12-13

Publications (1)

Publication Number Publication Date
GB1179409A true GB1179409A (en) 1970-01-28

Family

ID=27259603

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39985/67A Expired GB1179409A (en) 1966-11-28 1966-11-28 Improvements in or relating to Smoke Detectors

Country Status (8)

Country Link
US (1) US3504184A (en)
BE (1) BE707196A (en)
DE (1) DE1673329A1 (en)
DK (1) DK122549B (en)
FR (1) FR1547849A (en)
GB (1) GB1179409A (en)
NL (1) NL6716159A (en)
SE (1) SE343969B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3584774A1 (en) * 2018-06-19 2019-12-25 Wagner Group GmbH Detector for scattered light and suction fire detecting system with a detector for scattered light
EP3985632B1 (en) 2020-10-17 2024-10-09 Honeywell International Inc. Modular aspirated smoke, gas, or air quality monitoring systems and devices

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2036476A5 (en) * 1969-03-13 1970-12-24 Guigues Frederic
US3678511A (en) * 1969-12-09 1972-07-18 Elmer M Benedict Alarm circuit
US3805066A (en) * 1972-08-14 1974-04-16 T Chijuma Smoke detecting device utilizing optical fibers
JPS4946484A (en) * 1972-09-05 1974-05-04
US3870417A (en) * 1973-07-17 1975-03-11 Whirlpool Co Sensor for dishwasher
US3936814A (en) * 1974-04-29 1976-02-03 Bernz-O-Matic Corporation Smoke detector and alarm
JPS5166891A (en) * 1974-12-06 1976-06-09 Nippon Steel Corp RENZOKUSHIKIBIRYOYUNODOSOKUTEISOCHI
US11293865B2 (en) 2016-11-11 2022-04-05 Carrier Corporation High sensitivity fiber optic based detection
DE102018125494A1 (en) * 2018-10-15 2020-04-16 Bombardier Transportation Gmbh Smoke detector for detecting smoke in sections, and vehicle having a smoke detector

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2256595A (en) * 1939-07-13 1941-09-23 Photoswitch Inc Photoelectric system
US2306588A (en) * 1940-01-23 1942-12-29 C O Two Fire Equipment Co Smoke detecting apparatus
US2291776A (en) * 1941-01-16 1942-08-04 Wager Robert Hudson Combined smoke observation device and photoelectric indicating means
US2410104A (en) * 1942-08-27 1946-10-29 Fed Telephone & Radio Corp Light directing device
US2892378A (en) * 1955-04-26 1959-06-30 Gen Electric Indicating turbidimeter
US3045223A (en) * 1959-07-08 1962-07-17 Chicago Aerial Ind Inc Device for detecting the presence of foreign material
US3168218A (en) * 1962-09-18 1965-02-02 Waukesha Foundry Co Metering device with opaqueness responsive shutoff

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3584774A1 (en) * 2018-06-19 2019-12-25 Wagner Group GmbH Detector for scattered light and suction fire detecting system with a detector for scattered light
WO2019243135A1 (en) * 2018-06-19 2019-12-26 Wagner Group Gmbh Scattered light detector and aspirating fire detection system with a scattered light detector
US11417187B2 (en) 2018-06-19 2022-08-16 Wagner Group Gmbh Scattered light detector and suction fire detection system having a scattered light detector
EP3985632B1 (en) 2020-10-17 2024-10-09 Honeywell International Inc. Modular aspirated smoke, gas, or air quality monitoring systems and devices

Also Published As

Publication number Publication date
SE343969B (en) 1972-03-20
BE707196A (en) 1968-04-01
FR1547849A (en) 1968-11-29
US3504184A (en) 1970-03-31
NL6716159A (en) 1968-05-29
DK122549B (en) 1972-03-13
DE1673329A1 (en) 1972-03-02

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