GB1543764A - Fire sensor devices - Google Patents

Fire sensor devices

Info

Publication number
GB1543764A
GB1543764A GB1464876A GB1464876A GB1543764A GB 1543764 A GB1543764 A GB 1543764A GB 1464876 A GB1464876 A GB 1464876A GB 1464876 A GB1464876 A GB 1464876A GB 1543764 A GB1543764 A GB 1543764A
Authority
GB
United Kingdom
Prior art keywords
sensor devices
fire sensor
fire
devices
sensor
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
GB1464876A
Other languages
English (en)
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.)
Nohmi Bosai Ltd
Original Assignee
Nohmi Bosai Kogyo 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
Priority claimed from JP1973130045U external-priority patent/JPS5725351Y2/ja
Priority claimed from JP1974061692U external-priority patent/JPS5756304Y2/ja
Priority claimed from JP4890675U external-priority patent/JPS5727111Y2/ja
Application filed by Nohmi Bosai Kogyo Co Ltd filed Critical Nohmi Bosai Kogyo Co Ltd
Publication of GB1543764A publication Critical patent/GB1543764A/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

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
GB1464876A 1973-11-09 1976-04-09 Fire sensor devices Expired GB1543764A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP1973130045U JPS5725351Y2 (pm) 1973-11-09 1973-11-09
JP1974061692U JPS5756304Y2 (pm) 1974-05-29 1974-05-29
JP4890675U JPS5727111Y2 (pm) 1975-04-11 1975-04-11

Publications (1)

Publication Number Publication Date
GB1543764A true GB1543764A (en) 1979-04-04

Family

ID=27293456

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1464876A Expired GB1543764A (en) 1973-11-09 1976-04-09 Fire sensor devices

Country Status (4)

Country Link
CH (1) CH583946A5 (pm)
DE (1) DE2615412A1 (pm)
FR (1) FR2307319A2 (pm)
GB (1) GB1543764A (pm)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4401978A (en) * 1979-02-21 1983-08-30 The Gamewell Corporation Combination detector
US4316184A (en) * 1979-07-27 1982-02-16 Pittway Corporation Combination combustion-products detector
EP0039761A3 (de) * 1980-05-09 1981-11-25 Cerberus Ag Verfahren zur Brandmeldung und Brandmeldeanlage
DE102014019773B4 (de) 2014-12-17 2023-12-07 Elmos Semiconductor Se Vorrichtung und Verfahren zur Unterscheidung von festen Objekten, Kochdunst und Rauch mittels des Displays eines Mobiltelefons
DE102014019172B4 (de) 2014-12-17 2023-12-07 Elmos Semiconductor Se Vorrichtung und Verfahren zur Unterscheidung von festen Objekten, Kochdunst und Rauch mit einem kompensierenden optischen Messsystem

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3430220A (en) * 1965-09-15 1969-02-25 Clairex Electronics Inc Fire detector
US3611335A (en) * 1968-11-13 1971-10-05 Bbk Electronics Inc Multiple combustion sensing device with false alarm prevention

Also Published As

Publication number Publication date
CH583946A5 (pm) 1977-01-14
FR2307319A2 (fr) 1976-11-05
DE2615412A1 (de) 1976-10-21

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Legal Events

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