GB1278925A - Ionization smoke detector - Google Patents

Ionization smoke detector

Info

Publication number
GB1278925A
GB1278925A GB4791370A GB4791370A GB1278925A GB 1278925 A GB1278925 A GB 1278925A GB 4791370 A GB4791370 A GB 4791370A GB 4791370 A GB4791370 A GB 4791370A GB 1278925 A GB1278925 A GB 1278925A
Authority
GB
United Kingdom
Prior art keywords
ionization
current
smoke detector
oct
source
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
GB4791370A
Other languages
English (en)
Inventor
Akihiro Kobayashi
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 GB1278925A publication Critical patent/GB1278925A/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)
GB4791370A 1969-10-09 1970-10-08 Ionization smoke detector Expired GB1278925A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8033769 1969-10-09

Publications (1)

Publication Number Publication Date
GB1278925A true GB1278925A (en) 1972-06-21

Family

ID=13715432

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4791370A Expired GB1278925A (en) 1969-10-09 1970-10-08 Ionization smoke detector

Country Status (5)

Country Link
CA (1) CA928872A (enrdf_load_stackoverflow)
DE (1) DE2049717C3 (enrdf_load_stackoverflow)
FR (1) FR2065109A5 (enrdf_load_stackoverflow)
GB (1) GB1278925A (enrdf_load_stackoverflow)
SE (1) SE356624B (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH586941A5 (enrdf_load_stackoverflow) * 1975-07-25 1977-04-15 Cerberus Ag

Also Published As

Publication number Publication date
CA928872A (en) 1973-06-19
DE2049717B2 (de) 1975-05-15
DE2049717C3 (de) 1975-12-18
DE2049717A1 (de) 1971-04-29
SE356624B (enrdf_load_stackoverflow) 1973-05-28
FR2065109A5 (enrdf_load_stackoverflow) 1971-07-23

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee