DK138714B - Ionization fire alarm means. - Google Patents

Ionization fire alarm means.

Info

Publication number
DK138714B
DK138714B DK393473AA DK393473A DK138714B DK 138714 B DK138714 B DK 138714B DK 393473A A DK393473A A DK 393473AA DK 393473 A DK393473 A DK 393473A DK 138714 B DK138714 B DK 138714B
Authority
DK
Denmark
Prior art keywords
fire alarm
alarm means
ionization fire
ionization
fire
Prior art date
Application number
DK393473AA
Other languages
Danish (da)
Other versions
DK138714C (en
Inventor
Andreas Scheidweiler
Hans-Peter Thalmann
Original Assignee
Cerberus Ag
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 Cerberus Ag filed Critical Cerberus Ag
Publication of DK138714B publication Critical patent/DK138714B/en
Application granted granted Critical
Publication of DK138714C publication Critical patent/DK138714C/da

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
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/04—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using a single signalling line, e.g. in a closed loop

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Fire Alarms (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Printing Plates And Materials Therefor (AREA)
DK393473AA 1972-07-17 1973-07-16 Ionization fire alarm means. DK138714B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1065572 1972-07-17

Publications (2)

Publication Number Publication Date
DK138714B true DK138714B (en) 1978-10-16
DK138714C DK138714C (en) 1979-03-19

Family

ID=4365446

Family Applications (1)

Application Number Title Priority Date Filing Date
DK393473AA DK138714B (en) 1972-07-17 1973-07-16 Ionization fire alarm means.

Country Status (19)

Country Link
US (1) US3909813A (en)
JP (1) JPS4970691A (en)
AT (1) AT339777B (en)
AU (1) AU474603B2 (en)
BE (1) BE801719A (en)
BR (1) BR7305317D0 (en)
CA (1) CA1018680A (en)
CH (1) CH547532A (en)
DE (1) DE2328872C3 (en)
DK (1) DK138714B (en)
ES (1) ES415905A1 (en)
FI (1) FI59498C (en)
FR (1) FR2193224B1 (en)
GB (1) GB1412164A (en)
HK (1) HK57380A (en)
IT (1) IT988800B (en)
NO (1) NO136269C (en)
SE (1) SE392357B (en)
ZA (1) ZA734853B (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5617815Y2 (en) * 1974-07-10 1981-04-24
JPS5150786A (en) * 1974-10-29 1976-05-04 Mitsubishi Electric Corp IONKASHIKIKE MURITANCHIKI
JPS52142999A (en) * 1976-05-24 1977-11-29 Nohmi Bosai Kogyo Co Ltd Fire alarm facility
DE2707409C2 (en) * 1977-02-21 1985-02-21 Hartwig Dipl.-Ing. 2409 Scharbeutz Beyersdorf Ionization fire detector
US4207558A (en) * 1978-04-03 1980-06-10 Pittway Corporation Interconnection circuit for a plurality of alarm units
USRE30620E (en) * 1978-07-03 1981-05-19 P. R. Mallory & Co. Inc. High output smoke and heat detector alarm system utilizing a piezoelectric transducer and a voltage doubling means
CH629905A5 (en) 1978-07-17 1982-05-14 Cerberus Ag GAS AND / OR FIRE DETECTING SYSTEM.
JPS5555752U (en) * 1978-10-12 1980-04-15
US4223303A (en) * 1978-12-11 1980-09-16 General Electric Company Alarm devices for interconnected multi-device systems
US4401978A (en) * 1979-02-21 1983-08-30 The Gamewell Corporation Combination detector
EP0039761A3 (en) * 1980-05-09 1981-11-25 Cerberus Ag Fire annunciating arrangement and method
JPH079680B2 (en) * 1985-04-01 1995-02-01 ホーチキ株式会社 Analog fire alarm
CH669859A5 (en) * 1986-06-03 1989-04-14 Cerberus Ag
DE58905587D1 (en) * 1988-03-30 1993-10-21 Cerberus Ag Early fire detection procedures.
JPH0259461U (en) * 1988-10-21 1990-05-01
US6753786B1 (en) 2000-08-11 2004-06-22 Walter Kidde Portable Equipment, Inc. Microprocessor-based combination smoke and carbon monoxide detector having intelligent hush feature
US7068177B2 (en) * 2002-09-19 2006-06-27 Honeywell International, Inc. Multi-sensor device and methods for fire detection
US20080030352A1 (en) * 2006-02-27 2008-02-07 Thorn Security Limited Methods and systems for gas detection
CA2926453C (en) 2013-10-07 2023-02-21 Google Inc. Visual and auditory user notification methods for smart-home hazard detector
US9685061B2 (en) 2015-05-20 2017-06-20 Google Inc. Event prioritization and user interfacing for hazard detection in multi-room smart-home environment

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3665441A (en) * 1970-09-14 1972-05-23 Gen Signal Corp Method and apparatus for detecting aerosols

Also Published As

Publication number Publication date
FI59498C (en) 1981-08-10
AU5798673A (en) 1975-01-16
DE2328872B2 (en) 1980-05-14
IT988800B (en) 1975-04-30
CH547532A (en) 1974-03-29
ZA734853B (en) 1974-06-26
JPS4970691A (en) 1974-07-09
BE801719A (en) 1973-10-15
CA1018680A (en) 1977-10-04
HK57380A (en) 1980-10-16
GB1412164A (en) 1975-10-29
DE2328872A1 (en) 1974-01-31
BR7305317D0 (en) 1974-08-22
ATA456073A (en) 1977-02-15
SE392357B (en) 1977-03-21
NO136269C (en) 1977-08-17
AU474603B2 (en) 1976-07-29
ES415905A1 (en) 1976-02-01
DE2328872C3 (en) 1981-01-08
FI59498B (en) 1981-04-30
NO136269B (en) 1977-05-02
DK138714C (en) 1979-03-19
FR2193224A1 (en) 1974-02-15
FR2193224B1 (en) 1978-12-29
US3909813A (en) 1975-09-30
AT339777B (en) 1977-11-10

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Legal Events

Date Code Title Description
PBP Patent lapsed