GB1250296A - - Google Patents

Info

Publication number
GB1250296A
GB1250296A GB1250296DA GB1250296A GB 1250296 A GB1250296 A GB 1250296A GB 1250296D A GB1250296D A GB 1250296DA GB 1250296 A GB1250296 A GB 1250296A
Authority
GB
United Kingdom
Prior art keywords
electrode
chamber
ionization
shaped
circuit
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
Other languages
English (en)
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
Publication of GB1250296A publication Critical patent/GB1250296A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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

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)
GB1250296D 1969-05-19 1970-05-19 Expired GB1250296A (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH760669A CH486082A (de) 1969-05-19 1969-05-19 Ionisationsfeuermelder

Publications (1)

Publication Number Publication Date
GB1250296A true GB1250296A (enExample) 1971-10-20

Family

ID=4327756

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1250296D Expired GB1250296A (enExample) 1969-05-19 1970-05-19

Country Status (10)

Country Link
US (1) US3710110A (enExample)
CH (1) CH486082A (enExample)
DE (1) DE2023954C3 (enExample)
FR (1) FR2047853A5 (enExample)
GB (1) GB1250296A (enExample)
HK (1) HK11577A (enExample)
NL (1) NL168975C (enExample)
NO (1) NO125512B (enExample)
SE (1) SE346173B (enExample)
YU (1) YU32508B (enExample)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH554033A (de) * 1973-04-03 1974-09-13 Cerberus Ag Iomisations-feuermelde-einrichtung.
CH551057A (de) * 1973-04-17 1974-06-28 Cerberus Ag Ionisationsfeuermelder.
US3832552A (en) * 1973-06-22 1974-08-27 Honeywell Inc Dual chamber ionization smoke detector
US3849685A (en) * 1973-06-22 1974-11-19 Honeywell Inc Ionization chamber with recessed radioactive body
JPS5552558Y2 (enExample) * 1975-02-10 1980-12-05
BE831296A (fr) * 1975-07-11 1975-11-03 Detecteur ionique
CH600563A5 (enExample) * 1976-11-29 1978-06-15 Cerberus Ag
US4185197A (en) * 1978-01-13 1980-01-22 General Electric Company Arrangement for inhibiting the effect of extraneous electric fields on an improved ionization smoke detector
US4327289A (en) * 1978-12-26 1982-04-27 Solomon Elias E Ionization detector calibration
US4286159A (en) * 1979-04-10 1981-08-25 Hochiki Corporation Detector coupling mechanism
AT378431B (de) * 1983-06-30 1985-08-12 Siemens Ag Oesterreich Probenkammer herkoemmlicher groesse zum einbau eines ionisations-rauchmelder-einsatzes
GB8529436D0 (en) * 1985-11-29 1986-01-08 Gent Ltd Fire detector
US4754199A (en) * 1987-03-04 1988-06-28 Parker William P Self contained gas discharge display device
US4963792A (en) * 1987-03-04 1990-10-16 Parker William P Self contained gas discharge device
US4937562A (en) * 1987-12-26 1990-06-26 Hochiki Corp. Moisture-proof ionization smoke detector
JPH01102991U (enExample) * 1987-12-26 1989-07-12
DE4402518C2 (de) * 1994-01-28 1997-10-23 Preussag Ag Minimax Ionisationsrauchmelder
US6675005B2 (en) 1999-03-25 2004-01-06 Zenith Electronics Corporation Printed single balanced downconverter mixer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3231778A (en) * 1963-06-20 1966-01-25 Sylvania Electric Prod Signal barrier
LU48167A1 (enExample) * 1965-03-11 1966-09-12 Applic Electroniques Ets

Also Published As

Publication number Publication date
CH486082A (de) 1970-02-15
SE346173B (enExample) 1972-06-26
US3710110A (en) 1973-01-09
HK11577A (en) 1977-03-11
NL168975C (nl) 1982-05-17
NL168975B (nl) 1981-12-16
NO125512B (enExample) 1972-09-18
DE2023954C3 (de) 1979-09-20
YU119570A (en) 1974-06-30
FR2047853A5 (enExample) 1971-03-12
DE2023954A1 (de) 1970-11-26
NL7007045A (enExample) 1970-11-23
DE2023954B2 (de) 1979-01-25
YU32508B (en) 1974-12-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee