JPS529998B1 - - Google Patents

Info

Publication number
JPS529998B1
JPS529998B1 JP44031475A JP3147569A JPS529998B1 JP S529998 B1 JPS529998 B1 JP S529998B1 JP 44031475 A JP44031475 A JP 44031475A JP 3147569 A JP3147569 A JP 3147569A JP S529998 B1 JPS529998 B1 JP S529998B1
Authority
JP
Japan
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.)
Pending
Application number
JP44031475A
Other languages
Japanese (ja)
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 filed Critical
Priority to JP44031475A priority Critical patent/JPS529998B1/ja
Priority to US10158A priority patent/US3676678A/en
Priority to GB1259437D priority patent/GB1259437A/en
Priority to NL7002577A priority patent/NL7002577A/xx
Priority to DE19702019791 priority patent/DE2019791B2/en
Publication of JPS529998B1 publication Critical patent/JPS529998B1/ja
Pending 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
    • 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
JP44031475A 1969-04-25 1969-04-25 Pending JPS529998B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP44031475A JPS529998B1 (en) 1969-04-25 1969-04-25
US10158A US3676678A (en) 1969-04-25 1970-02-10 Single chamber ionization smoke detector
GB1259437D GB1259437A (en) 1969-04-25 1970-02-24
NL7002577A NL7002577A (en) 1969-04-25 1970-02-24
DE19702019791 DE2019791B2 (en) 1969-04-25 1970-04-23 IONIZATION CHAMBER SMOKE DETECTOR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44031475A JPS529998B1 (en) 1969-04-25 1969-04-25

Publications (1)

Publication Number Publication Date
JPS529998B1 true JPS529998B1 (en) 1977-03-19

Family

ID=12332275

Family Applications (1)

Application Number Title Priority Date Filing Date
JP44031475A Pending JPS529998B1 (en) 1969-04-25 1969-04-25

Country Status (5)

Country Link
US (1) US3676678A (en)
JP (1) JPS529998B1 (en)
DE (1) DE2019791B2 (en)
GB (1) GB1259437A (en)
NL (1) NL7002577A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2711457C2 (en) * 1977-03-16 1985-06-27 Siemens AG, 1000 Berlin und 8000 München Ionization fire detector
DE2965448D1 (en) * 1978-09-29 1983-07-07 Chubb Fire Security Ltd Heat detector circuit
ZA786519B (en) * 1978-11-20 1980-02-27 Anglo Amer Corp South Africa Detector
US5189399A (en) * 1989-02-18 1993-02-23 Hartwig Beyersdorf Method of operating an ionization smoke alarm and ionization smoke alarm
DE3904979A1 (en) * 1989-02-18 1990-08-23 Beyersdorf Hartwig METHOD FOR OPERATING AN IONIZATION SMOKE DETECTOR AND IONIZATION SMOKE DETECTOR
EP0423489A1 (en) * 1989-09-15 1991-04-24 Cerberus Ag Smoke detection arrangement with monitoring
US6683319B1 (en) 2001-07-17 2004-01-27 Mitec Incorporated System and method for irradiation with improved dosage uniformity

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK101900C (en) * 1961-12-30 1965-06-08 Danske Securitas As Electrical alarm system, preferably for fire alarm.

Also Published As

Publication number Publication date
DE2019791B2 (en) 1972-03-30
GB1259437A (en) 1972-01-05
US3676678A (en) 1972-07-11
NL7002577A (en) 1970-10-27
DE2019791A1 (en) 1970-11-05

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