FR2191731A5 - - Google Patents

Info

Publication number
FR2191731A5
FR2191731A5 FR7323496A FR7323496A FR2191731A5 FR 2191731 A5 FR2191731 A5 FR 2191731A5 FR 7323496 A FR7323496 A FR 7323496A FR 7323496 A FR7323496 A FR 7323496A FR 2191731 A5 FR2191731 A5 FR 2191731A5
Authority
FR
France
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
FR7323496A
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.)
Anglo American Corp of South Africa Ltd
Original Assignee
Anglo American Corp of South Africa 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
Priority claimed from ZA724440A external-priority patent/ZA724440B/xx
Application filed by Anglo American Corp of South Africa Ltd filed Critical Anglo American Corp of South Africa Ltd
Application granted granted Critical
Publication of FR2191731A5 publication Critical patent/FR2191731A5/fr
Expired legal-status Critical Current

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
    • G08B17/113—Constructional details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
    • G01N27/64—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
    • G01N27/66—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber and measuring current or voltage

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
FR7323496A 1972-06-27 1973-06-27 Expired FR2191731A5 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA724440A ZA724440B (en) 1972-06-27 1972-06-27 Smoke detectors
ZA728084 1972-11-15

Publications (1)

Publication Number Publication Date
FR2191731A5 true FR2191731A5 (fr) 1974-02-01

Family

ID=27131055

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7323496A Expired FR2191731A5 (fr) 1972-06-27 1973-06-27

Country Status (8)

Country Link
US (1) US3824422A (fr)
JP (1) JPS4953494A (fr)
AU (1) AU475495B2 (fr)
CA (1) CA990865A (fr)
CH (1) CH566060A5 (fr)
DE (1) DE2332424C3 (fr)
FR (1) FR2191731A5 (fr)
GB (1) GB1379535A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA734995B (en) * 1973-07-23 1974-10-30 Anglo Amer Corp South Africa Improvemente in or relating to fire detectors
JPS5552558Y2 (fr) * 1975-02-10 1980-12-05
JPS633253A (ja) * 1986-06-24 1988-01-08 Nemoto Tokushu Kagaku Kk エアロゾル濃度計測装置
JP2536630Y2 (ja) * 1989-02-20 1997-05-21 能美防災 株式会社 光電式煙感知器
US6040523A (en) * 1996-12-11 2000-03-21 Raytheon Company Snap-fit design of an airborne missile systems seeker/detector section using engineering plastics
US6057774A (en) * 1999-01-21 2000-05-02 Brk Brands, Inc. Smoke alarm with anti-dust screen
DE102008032145B4 (de) * 2008-07-08 2012-12-06 Techem Energy Services Gmbh Warnmelder mit einer zur Umgebung offenen Detektionskammer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3769917A (en) * 1971-12-20 1973-11-06 Pullman Inc Freight bracing apparatus

Also Published As

Publication number Publication date
DE2332424C3 (de) 1978-06-22
CH566060A5 (fr) 1975-08-29
JPS4953494A (fr) 1974-05-24
GB1379535A (en) 1975-01-02
DE2332424A1 (de) 1974-01-31
AU5736473A (en) 1975-01-09
DE2332424B2 (de) 1977-10-27
AU475495B2 (en) 1976-08-26
CA990865A (en) 1976-06-08
US3824422A (en) 1974-07-16

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Legal Events

Date Code Title Description
ST Notification of lapse