IT992949B - SMOKE DETECTOR - Google Patents

SMOKE DETECTOR

Info

Publication number
IT992949B
IT992949B IT27853/73A IT2785373A IT992949B IT 992949 B IT992949 B IT 992949B IT 27853/73 A IT27853/73 A IT 27853/73A IT 2785373 A IT2785373 A IT 2785373A IT 992949 B IT992949 B IT 992949B
Authority
IT
Italy
Prior art keywords
smoke detector
smoke
detector
Prior art date
Application number
IT27853/73A
Other languages
Italian (it)
Original Assignee
Pyrotector Europ Gmbh
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 Pyrotector Europ Gmbh filed Critical Pyrotector Europ Gmbh
Application granted granted Critical
Publication of IT992949B publication Critical patent/IT992949B/en

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
    • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
    • G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke
    • 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)
  • Investigating Or Analysing Materials By Optical Means (AREA)
IT27853/73A 1972-08-21 1973-08-14 SMOKE DETECTOR IT992949B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00282335A US3799670A (en) 1972-08-21 1972-08-21 Smoke detector

Publications (1)

Publication Number Publication Date
IT992949B true IT992949B (en) 1975-09-30

Family

ID=23081041

Family Applications (1)

Application Number Title Priority Date Filing Date
IT27853/73A IT992949B (en) 1972-08-21 1973-08-14 SMOKE DETECTOR

Country Status (12)

Country Link
US (1) US3799670A (en)
JP (1) JPS4947098A (en)
AR (1) AR196020A1 (en)
BR (1) BR7304695D0 (en)
CS (1) CS186220B2 (en)
DD (1) DD105128A5 (en)
DE (1) DE2338080C2 (en)
ES (1) ES416667A1 (en)
FR (1) FR2197467A5 (en)
GB (1) GB1433821A (en)
IT (1) IT992949B (en)
NL (1) NL7309455A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3985453A (en) * 1974-07-19 1976-10-12 Matsushita Electric Works, Ltd. Light scattering type smoke detector
US4129383A (en) * 1976-02-10 1978-12-12 Chloride Incorporated Smoke detector and housing assembly therefore
JPS5926860U (en) * 1982-08-12 1984-02-20 東芝電池株式会社 battery storage case
DE3608393A1 (en) * 1986-03-13 1987-09-17 Preussag Ag Feuerschutz Optical smoke alarm
EP0641430A4 (en) * 1992-05-14 1995-09-13 Iei Pty Ltd Gas sampling point for smoke/pollution detection systems.
US5665924A (en) * 1992-05-14 1997-09-09 I.E.I. Pty. Ltd. Gas sampling point for smoke/pollution detection system
AU667102B2 (en) * 1992-05-14 1996-03-07 Vision Systems Limited Gas sampling point for smoke/pollution detection systems
DE4328671B4 (en) * 1992-08-28 2005-02-17 Hochiki K.K. Scattered light smoke
US5719557A (en) * 1994-05-19 1998-02-17 Digital Security Controls Ltd. Photoelectric smoke detector
US5581241A (en) * 1994-08-12 1996-12-03 Voice Products Inc. Ultra-sensitive smoke detector
GB2309076B (en) * 1996-01-10 1999-08-11 Kidde Fire Protection Ltd Particle separation and detection apparatus
EP1368593B1 (en) * 2001-03-10 2005-06-08 Acbond Limited Improvements in and relating to smoke detectors
US7733486B2 (en) * 2007-06-27 2010-06-08 Venturedyne, Ltd. Environmental sensor including a baffle
EP3270362B1 (en) 2017-02-07 2019-01-02 Siemens Schweiz AG Fire alarm with a measurement chamber and a switch holder for joint assembly of a fire sensor of the measuring chamber and at least one further sensor for detecting a measured variable in the environment outside the fire detector
EP3803818A1 (en) 2018-05-29 2021-04-14 Autronica Fire & Security AS Hazard detector socket
CN108721803B (en) * 2018-07-16 2023-11-17 北方工程设计研究院有限公司 Fire-fighting wall-passing platform for ultra-high large shielding darkroom

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1598941A1 (en) * 1951-01-28 1971-02-25 Pyrotector Gmbh Light-tight housing for light-optical detection devices
US3312826A (en) * 1962-11-19 1967-04-04 Sam M Finkle Photoelectric smoke detector with ventilation induced by light source
US3409885A (en) * 1964-03-26 1968-11-05 Guardian Industries Smoke detection apparatus
CH417405A (en) * 1964-07-14 1966-07-15 Cerberus Ag Werk Fuer Elektron Device for the detection of aerosols in air
US3460124A (en) * 1966-06-06 1969-08-05 Interstate Eng Corp Smoke detector
US3555532A (en) * 1968-10-29 1971-01-12 Graham Stuart Corp Vapor or particle detection device
US3708675A (en) * 1969-09-19 1973-01-02 Furukawa Electric Co Ltd Smoke detector in which air entrance and egress are located in oppositely disposed surfaces which are shaped to cause an air velocity differential

Also Published As

Publication number Publication date
US3799670A (en) 1974-03-26
DE2338080C2 (en) 1984-11-29
DD105128A5 (en) 1974-04-12
FR2197467A5 (en) 1974-03-22
BR7304695D0 (en) 1974-08-22
AU5580273A (en) 1974-11-21
JPS4947098A (en) 1974-05-07
NL7309455A (en) 1974-02-25
DE2338080A1 (en) 1974-03-07
CS186220B2 (en) 1978-11-30
GB1433821A (en) 1976-04-28
AR196020A1 (en) 1973-11-23
ES416667A1 (en) 1976-02-01

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