GB0110572D0 - Smoke alarm - Google Patents

Smoke alarm

Info

Publication number
GB0110572D0
GB0110572D0 GB0110572A GB0110572A GB0110572D0 GB 0110572 D0 GB0110572 D0 GB 0110572D0 GB 0110572 A GB0110572 A GB 0110572A GB 0110572 A GB0110572 A GB 0110572A GB 0110572 D0 GB0110572 D0 GB 0110572D0
Authority
GB
United Kingdom
Prior art keywords
smoke alarm
smoke
alarm
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
GB0110572A
Other versions
GB2367175A (en
GB2367175B (en
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.)
MCLAUGHLIN BRIAN F
Original Assignee
MCLAUGHLIN BRIAN F
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 MCLAUGHLIN BRIAN F filed Critical MCLAUGHLIN BRIAN F
Publication of GB0110572D0 publication Critical patent/GB0110572D0/en
Publication of GB2367175A publication Critical patent/GB2367175A/en
Application granted granted Critical
Publication of GB2367175B publication Critical patent/GB2367175B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
    • G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems
    • G08B13/1672—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems using sonic detecting means, e.g. a microphone operating in the audio frequency range
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
GB0110572A 2000-04-29 2001-04-30 Warning device Expired - Fee Related GB2367175B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0010375A GB0010375D0 (en) 2000-04-29 2000-04-29 Smoke alarm

Publications (3)

Publication Number Publication Date
GB0110572D0 true GB0110572D0 (en) 2001-06-20
GB2367175A GB2367175A (en) 2002-03-27
GB2367175B GB2367175B (en) 2005-01-12

Family

ID=9890687

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0010375A Ceased GB0010375D0 (en) 2000-04-29 2000-04-29 Smoke alarm
GB0110572A Expired - Fee Related GB2367175B (en) 2000-04-29 2001-04-30 Warning device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0010375A Ceased GB0010375D0 (en) 2000-04-29 2000-04-29 Smoke alarm

Country Status (1)

Country Link
GB (2) GB0010375D0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2388693A (en) * 2002-05-16 2003-11-19 Phillip John Williams Emergency exit indicator

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4207559A (en) * 1977-09-26 1980-06-10 Meyer Michael M Alarm system with acoustically coupled transmitters and receiver
US4189720A (en) * 1977-10-07 1980-02-19 Lott Thomas M Repeater for smoke and similar alarms
US4450436A (en) * 1979-09-07 1984-05-22 The Stoneleigh Trust Acoustic alarm repeater system
US4520503A (en) * 1983-10-14 1985-05-28 University Of New Mexico Tone discrimination circuit
US4897862A (en) * 1988-05-27 1990-01-30 Nec Corporation Acoustic alarm detection system for telephone activation
US4935952A (en) * 1988-07-13 1990-06-19 B-Warned, Inc. Alarm-responsive apparatus and method
GB8913552D0 (en) * 1989-06-13 1989-08-02 Emi Plc Thorn Smoke alarm systems
GB2266800B (en) * 1992-05-02 1996-02-28 Tarquin Andrew Stehle External audible fire and intruder warning alarm system

Also Published As

Publication number Publication date
GB0010375D0 (en) 2000-06-14
GB2367175A (en) 2002-03-27
GB2367175B (en) 2005-01-12

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20120430