GB1269911A - Smoke detector - Google Patents

Smoke detector

Info

Publication number
GB1269911A
GB1269911A GB8573/70A GB857370A GB1269911A GB 1269911 A GB1269911 A GB 1269911A GB 8573/70 A GB8573/70 A GB 8573/70A GB 857370 A GB857370 A GB 857370A GB 1269911 A GB1269911 A GB 1269911A
Authority
GB
United Kingdom
Prior art keywords
decrease
loading
junction
pan
electrode
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
GB8573/70A
Other languages
English (en)
Inventor
Koju Sasaki
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.)
Nittan Co Ltd
Original Assignee
Nittan Co 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 Nittan Co Ltd filed Critical Nittan Co Ltd
Publication of GB1269911A publication Critical patent/GB1269911A/en
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

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)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Emergency Alarm Devices (AREA)
GB8573/70A 1969-04-04 1970-02-23 Smoke detector Expired GB1269911A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44025730A JPS5147039B1 (ja) 1969-04-04 1969-04-04

Publications (1)

Publication Number Publication Date
GB1269911A true GB1269911A (en) 1972-04-06

Family

ID=12173907

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8573/70A Expired GB1269911A (en) 1969-04-04 1970-02-23 Smoke detector

Country Status (11)

Country Link
JP (1) JPS5147039B1 (ja)
AT (1) AT297544B (ja)
BE (1) BE732651A (ja)
CH (1) CH498457A (ja)
DE (1) DE2004584B2 (ja)
ES (1) ES375686A1 (ja)
FR (1) FR2042047A5 (ja)
GB (1) GB1269911A (ja)
IL (1) IL33654A (ja)
NL (1) NL144410B (ja)
SE (1) SE350634B (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5189399A (en) * 1989-02-18 1993-02-23 Hartwig Beyersdorf Method of operating an ionization smoke alarm and ionization smoke alarm
DE3904979A1 (de) * 1989-02-18 1990-08-23 Beyersdorf Hartwig Verfahren zum betrieb eines ionisationsrauchmelders und ionisationsrauchmelder
CN111951514A (zh) * 2020-08-03 2020-11-17 深圳职业技术学院 一种基于图像识别的烟雾检测装置

Also Published As

Publication number Publication date
NL144410B (nl) 1974-12-16
IL33654A (en) 1973-08-29
DE2004584A1 (de) 1970-11-26
ES375686A1 (es) 1972-05-16
JPS5147039B1 (ja) 1976-12-13
DE2004584B2 (de) 1971-12-23
IL33654A0 (en) 1970-03-22
SE350634B (ja) 1972-10-30
CH498457A (de) 1970-10-31
BE732651A (ja) 1969-10-16
NL7001934A (ja) 1970-10-06
FR2042047A5 (ja) 1971-02-05
AT297544B (de) 1972-03-27

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