AU577538B2 - Optical smoke detectors - Google Patents

Optical smoke detectors

Info

Publication number
AU577538B2
AU577538B2 AU31843/84A AU3184384A AU577538B2 AU 577538 B2 AU577538 B2 AU 577538B2 AU 31843/84 A AU31843/84 A AU 31843/84A AU 3184384 A AU3184384 A AU 3184384A AU 577538 B2 AU577538 B2 AU 577538B2
Authority
AU
Australia
Prior art keywords
smoke detectors
optical smoke
optical
detectors
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.)
Ceased
Application number
AU31843/84A
Other versions
AU3184384A (en
Inventor
Martin Terence Cole
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.)
Vision Systems Ltd
Original Assignee
Vision Systems 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 Vision Systems Ltd filed Critical Vision Systems Ltd
Priority to AU31843/84A priority Critical patent/AU577538B2/en
Priority to EP84305514A priority patent/EP0135362B1/en
Publication of AU3184384A publication Critical patent/AU3184384A/en
Application granted granted Critical
Publication of AU577538B2 publication Critical patent/AU577538B2/en
Assigned to VISION SYSTEMS LIMITED reassignment VISION SYSTEMS LIMITED Alteration of Name(s) in Register under S187 Assignors: COLE, MARTIN TERENCE
Anticipated expiration legal-status Critical
Ceased 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
    • G08B17/103—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
AU31843/84A 1983-08-12 1984-08-10 Optical smoke detectors Ceased AU577538B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU31843/84A AU577538B2 (en) 1983-08-12 1984-08-10 Optical smoke detectors
EP84305514A EP0135362B1 (en) 1983-08-12 1984-08-13 Optical smoke detectors

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPG0822 1983-08-12
AU31843/84A AU577538B2 (en) 1983-08-12 1984-08-10 Optical smoke detectors

Publications (2)

Publication Number Publication Date
AU3184384A AU3184384A (en) 1985-02-14
AU577538B2 true AU577538B2 (en) 1988-09-29

Family

ID=3719496

Family Applications (1)

Application Number Title Priority Date Filing Date
AU31843/84A Ceased AU577538B2 (en) 1983-08-12 1984-08-10 Optical smoke detectors

Country Status (1)

Country Link
AU (1) AU577538B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7508313B2 (en) 2000-02-10 2009-03-24 Siemens Aktiengesellschaft Smoke detectors particularly ducted smoke detectors
US7551277B2 (en) 2003-10-23 2009-06-23 Siemens Schweiz Ag Particle monitors and method(s) therefor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4089047A (en) * 1976-04-26 1978-05-09 Willy Luderitz Trifocal mirror-reflector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4089047A (en) * 1976-04-26 1978-05-09 Willy Luderitz Trifocal mirror-reflector

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7508313B2 (en) 2000-02-10 2009-03-24 Siemens Aktiengesellschaft Smoke detectors particularly ducted smoke detectors
US7551277B2 (en) 2003-10-23 2009-06-23 Siemens Schweiz Ag Particle monitors and method(s) therefor
US7724367B2 (en) 2003-10-23 2010-05-25 Siemens Schweiz Ag Particle monitors and method(s) therefor
US7738098B2 (en) 2003-10-23 2010-06-15 Siemens Schweiz Ag Particle monitors and method(s) therefor

Also Published As

Publication number Publication date
AU3184384A (en) 1985-02-14

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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired