EP0111012A4 - Ionization type of smoke sensor. - Google Patents

Ionization type of smoke sensor.

Info

Publication number
EP0111012A4
EP0111012A4 EP19830901734 EP83901734A EP0111012A4 EP 0111012 A4 EP0111012 A4 EP 0111012A4 EP 19830901734 EP19830901734 EP 19830901734 EP 83901734 A EP83901734 A EP 83901734A EP 0111012 A4 EP0111012 A4 EP 0111012A4
Authority
EP
European Patent Office
Prior art keywords
smoke sensor
ionization type
ionization
type
smoke
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.)
Granted
Application number
EP19830901734
Other languages
German (de)
French (fr)
Other versions
EP0111012A1 (en
EP0111012B1 (en
Inventor
Toru Nohmi Bosai Kogyo 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.)
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
Application filed by Nohmi Bosai Kogyo Co Ltd filed Critical Nohmi Bosai Kogyo Co Ltd
Publication of EP0111012A1 publication Critical patent/EP0111012A1/en
Publication of EP0111012A4 publication Critical patent/EP0111012A4/en
Application granted granted Critical
Publication of EP0111012B1 publication Critical patent/EP0111012B1/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
    • 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)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
EP83901734A 1982-06-07 1983-06-07 Ionization type of smoke sensor Expired EP0111012B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1982083510U JPS58186463U (en) 1982-06-07 1982-06-07 ionization smoke detector
JP83510/82U 1982-06-07

Publications (3)

Publication Number Publication Date
EP0111012A1 EP0111012A1 (en) 1984-06-20
EP0111012A4 true EP0111012A4 (en) 1984-12-11
EP0111012B1 EP0111012B1 (en) 1989-08-09

Family

ID=13804477

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83901734A Expired EP0111012B1 (en) 1982-06-07 1983-06-07 Ionization type of smoke sensor

Country Status (5)

Country Link
US (1) US4594512A (en)
EP (1) EP0111012B1 (en)
JP (1) JPS58186463U (en)
DE (1) DE3380374D1 (en)
WO (1) WO1983004449A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6044194U (en) * 1983-09-05 1985-03-28 能美防災工業株式会社 Heat-resistant case for ionization smoke detector
US4761557A (en) * 1985-08-24 1988-08-02 Kohmi Bosai Kogyo Co., Ltd. Ionization-type smoke detector
CA1267735A (en) * 1986-01-17 1990-04-10 Nohmi Bosai Kogyo Co., Ltd. Ionization type-smoke detector
FR2594953B1 (en) * 1986-02-25 1989-05-05 Lewiner Jacques SMOKE DETECTOR WITH IONIZATION CHAMBER
DE3921377A1 (en) * 1989-06-29 1991-01-03 Inotech Ag Wohlen DEVICE AND METHOD FOR MEASURING ELECTRONES
US5485144A (en) * 1993-05-07 1996-01-16 Pittway Corporation Compensated ionization sensor
US20030180591A1 (en) * 2001-03-29 2003-09-25 Steven Danyluk Contact potential difference ionization battery

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935466A (en) * 1968-09-26 1976-01-27 Hochiki Kabushiki Kaisha Smoke detector adapted to a smoke sensing apparatus
GB2010578A (en) * 1977-11-18 1979-06-27 Radiochemical Centre Ltd Smoke detectors
GB2013393A (en) * 1977-11-18 1979-08-08 Radiochemical Centre Ltd Smoke Detectors
USRE30323E (en) * 1968-09-26 1980-07-01 Hochiki Kabushiki Kaisha Smoke detector adapted to a smoke sensing apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1115860A (en) * 1977-11-18 1982-01-05 Dennis W.S. Smout Smoke detectors
CA1116319A (en) * 1977-11-18 1982-01-12 Jack Bryant Smoke detectors
JPS5821031Y2 (en) * 1978-03-15 1983-05-02 ホーチキ株式会社 Smoke detectors
JPS5759965Y2 (en) * 1978-04-25 1982-12-21

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935466A (en) * 1968-09-26 1976-01-27 Hochiki Kabushiki Kaisha Smoke detector adapted to a smoke sensing apparatus
USRE30323E (en) * 1968-09-26 1980-07-01 Hochiki Kabushiki Kaisha Smoke detector adapted to a smoke sensing apparatus
GB2010578A (en) * 1977-11-18 1979-06-27 Radiochemical Centre Ltd Smoke detectors
GB2013393A (en) * 1977-11-18 1979-08-08 Radiochemical Centre Ltd Smoke Detectors

Also Published As

Publication number Publication date
DE3380374D1 (en) 1989-09-14
WO1983004449A1 (en) 1983-12-22
JPH029430Y2 (en) 1990-03-08
JPS58186463U (en) 1983-12-10
US4594512A (en) 1986-06-10
EP0111012A1 (en) 1984-06-20
EP0111012B1 (en) 1989-08-09

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