CA1056931A - Smoke detector - Google Patents

Smoke detector

Info

Publication number
CA1056931A
CA1056931A CA207,336A CA207336A CA1056931A CA 1056931 A CA1056931 A CA 1056931A CA 207336 A CA207336 A CA 207336A CA 1056931 A CA1056931 A CA 1056931A
Authority
CA
Canada
Prior art keywords
pulse
flip
amplifier
light
output
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
CA207,336A
Other languages
English (en)
French (fr)
Other versions
CA207336S (en
Inventor
William J. Malinowski
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.)
Pyrotector Inc
Original Assignee
Pyrotector Inc
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
Priority claimed from US449362A external-priority patent/US3917956A/en
Application filed by Pyrotector Inc filed Critical Pyrotector Inc
Priority to CA295,627A priority Critical patent/CA1067175A/en
Application granted granted Critical
Publication of CA1056931A publication Critical patent/CA1056931A/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

Landscapes

  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
CA207,336A 1973-11-26 1974-08-19 Smoke detector Expired CA1056931A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA295,627A CA1067175A (en) 1973-11-26 1978-01-25 Smoke detector

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US41920673A 1973-11-26 1973-11-26
US449362A US3917956A (en) 1974-03-08 1974-03-08 Smoke detector

Publications (1)

Publication Number Publication Date
CA1056931A true CA1056931A (en) 1979-06-19

Family

ID=27024396

Family Applications (1)

Application Number Title Priority Date Filing Date
CA207,336A Expired CA1056931A (en) 1973-11-26 1974-08-19 Smoke detector

Country Status (11)

Country Link
JP (1) JPS50114275A (pt)
BR (1) BR7408707D0 (pt)
CA (1) CA1056931A (pt)
CH (2) CH599645A5 (pt)
CS (1) CS186786B2 (pt)
DE (2) DE2462876C2 (pt)
FR (1) FR2254024B3 (pt)
GB (1) GB1490866A (pt)
IL (1) IL45331A (pt)
IN (1) IN143206B (pt)
NL (1) NL7410079A (pt)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5354000A (en) * 1976-10-26 1978-05-16 Matsushita Electric Works Ltd Detection signal processing circuit of photoelectric type smoke detectors
US4125779A (en) * 1977-07-13 1978-11-14 Chloride, Incorporated Smoke detector
CH638331A5 (de) * 1979-02-22 1983-09-15 Cerberus Ag Rauchdetektor.
EP0014874B1 (de) * 1979-02-26 1983-06-08 Cerberus Ag Mit Strahlunsimpulsen arbeitender Brandmelder
BE881812A (nl) * 1979-12-17 1980-06-16 Cerberus Ag Meldingsstelsel
JPS5716956U (pt) * 1980-06-30 1982-01-28
JPS6014398B2 (ja) * 1981-03-18 1985-04-12 ホーチキ株式会社 光電式煙感知器
EP0145189B1 (en) * 1983-10-21 1990-08-08 COLE, Martin Terence Improvements relating to smoke detection apparatus
JPS6151U (ja) * 1985-05-17 1986-01-06 京セラ株式会社 光電式煙検出報知装置
JP7514863B2 (ja) * 2019-05-23 2024-07-11 ノースゲート テクノロジーズ インコーポレイテッド ガス再循環システムにおける煙除去システムおよび方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH417405A (de) * 1964-07-14 1966-07-15 Cerberus Ag Werk Fuer Elektron Vorrichtung zur Feststellung von Aerosolen in Luft
US3382762A (en) * 1967-02-21 1968-05-14 Alfred W. Vasel Smoke detecting device
US3555532A (en) 1968-10-29 1971-01-12 Graham Stuart Corp Vapor or particle detection device
GB1278205A (en) * 1970-02-11 1972-06-21 Shorrock Develpoments Ltd Smoke detecting device
CH520990A (de) * 1970-12-21 1972-03-31 Cerberus Ag Rauchdetektor

Also Published As

Publication number Publication date
NL7410079A (nl) 1975-05-28
IL45331A (en) 1977-12-30
IN143206B (pt) 1977-10-15
FR2254024B3 (pt) 1979-02-02
AU7330074A (en) 1976-03-18
CH599645A5 (pt) 1978-05-31
DE2448195A1 (de) 1975-05-28
CS186786B2 (en) 1978-12-29
IL45331A0 (en) 1974-10-22
BR7408707D0 (pt) 1975-08-26
DE2448195C2 (de) 1984-08-23
DE2462876C2 (de) 1983-06-09
CH580848A5 (pt) 1976-10-15
GB1490866A (en) 1977-11-02
JPS50114275A (pt) 1975-09-08
FR2254024A1 (pt) 1975-07-04

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