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GB2221331A - Smoke detector - Google Patents

Smoke detector Download PDF

Info

Publication number
GB2221331A
GB2221331A GB8817974A GB8817974A GB2221331A GB 2221331 A GB2221331 A GB 2221331A GB 8817974 A GB8817974 A GB 8817974A GB 8817974 A GB8817974 A GB 8817974A GB 2221331 A GB2221331 A GB 2221331A
Authority
GB
United Kingdom
Prior art keywords
smoke detector
detector according
housing
smoke
baseplate
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.)
Withdrawn
Application number
GB8817974A
Other versions
GB8817974D0 (en
Inventor
John Edward Kingston
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB8817974A priority Critical patent/GB2221331A/en
Publication of GB8817974D0 publication Critical patent/GB8817974D0/en
Priority to PCT/GB1989/000866 priority patent/WO1990001201A1/en
Priority to AU40595/89A priority patent/AU4059589A/en
Publication of GB2221331A publication Critical patent/GB2221331A/en
Withdrawn legal-status Critical Current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
    • 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)
  • Fire Alarms (AREA)

Abstract

The device comprises a squat cylindrical housing (1) which includes a base (2) and a cover (3). The base has a central aperture to receive an existing ceiling rose, or the base of one, and may be screw-threaded to engage the base of the ceiling rose. Screw fixing holes are also provided. The cover has smoke inlet apertures (18) in its top wall (15) and outlet apertures in its side wall (16), and includes a central aperture (23) for an electrical cable (25) for feeding a pendant light fitting which is suspended some distance below the housing (1).

Description

SMOKE DETECTOR Existing smoke detectors are available for attachment to a cei.ling, but it is a common complaint that they look out of place and do not fit in with the surrounding decor.
The smoke detector of the present invention is potentially far less noti.ceable in a domestic environment.
The invention provides a smoke detector comprising a housing adapted for attachment to a ceiling, the housi.ng including inlet means for electrical supply wiring and outlet means for an electrical cable for supplying electricity to a li.ght fitting.
In one embodiment the detector may include a squat cylindrical two part housing comprising a circular baseplate for attachment to the ceiling and a cover whi.ch screws onto the baseplate. The baseplate has an aperture for electrical supply wiring and spaced fixing holes by which it may be screwed to the ceiling. A terminal block may be carried by the baseplate for conveni.ence in making the vari.ous electrical supply connections. The smoke detector circuit may be mounted directly on the baseplate or on a separate board whi.ch is itself mounted from the baseplate. The detector circuit may be powered from the incoming mains supply vi.a an i.nbuilt ac/dc adaptor, or it may be powered by separate batteries contained within the housing.The cover contains a series of circumferentially spaced apertures around its cylindrical si.de wall to allow smoke in, and there is a central aperture in the cover through which an electrical supply cable can pass from the terminal block to a light fitting.
This detector could be used in place of a ceiling rose.
In another embodiment the detector may include a housing which is adapted to fit over an existing ceiling rose, or at least the base portion of one. The housing could be threaded to mate with a thread on the rose or it could have separate screw holes for independent fixing to the ceiling. The housing agai.n has the necessary electrical inlets and outlets, but in this case the inlet connections are made to the ceiling rose. The detector circuit may agai.n be powered from the mains or batteries, and the housi.ng agai.n includes smoke inlet apertures.
In both embodiments the detector may include means for attachment to the light fitting, e.g. an internally or externally screw threaded boss, but in the case of a lightweight fitting it could simply be suspended by the electrical cable.
In each case the device is both useful and decorative even when it is not functioning as a smoke detector.

Claims (16)

1. A smoke detector comprising a housing adapted for attachment to a ceiling, the housing including inlet means for electrical supply wi.ri.ng and outlet means for an electrical cable for supplyi.ng electrici.ty to a light fitting.
2. A smoke detector according to Claim 1, having a two part housing comprising a baseplate for attachment to the ceiling and a cover for attachment to the baseplate.
3. A smoke detector according to Claim 2, in which the baseplate has an aperture for the electrical supply wiri.ng and spaced fixing holes for use in attaching the detector to the ceiling.
4. A smoke detector according to Claim 2 or 3, i.n which the baseplate carri.es an electrical terminal block.
5. A smoke detector according to Claim 2, 3 or 4 which includes a smoke detector circuit t mounted directly on the baseplate.
6. A smoke detector according to Claim 2, 3 or 4 which includes a smoke deLector circuit mounted on a board which is in turn mounted from the baseplate.
7. A smoke detector according to any of Claims 2 to 6, in which the cover contains smoke inlet apertures.
8. A smoke detector according to Clai.m 7 as appended to Claim 4, in which there is a central aperture in the cover through which an electrical supply cable can pass from the terminal block to a light fitting.
9. A smoke detector according to Claim 1, in whi.ch the housing is adapted to fit over an existi.ng ceiling rose, or the base portion of an exi.sti.ng ceiling rose.
10. A smoke detector according to Claim 9, in which the housing is threaded to mate with a thread on the rose.
11. A smoke detector according to Clai.m 9, in which the housi.ng has screw holes for fixing the housing to the ceiling.
12. A smoke detector according to Claim 9. 10 or 11, in which the housing contains smoke inlet apertures.
13. A smoke detector according to any precedi.ng clai.m, which includes a smoke detector circuit powered from the incomi.ng mains supply via an ac/dc adaptor incorporated in the housing.
14. A smoke detector according to any preceding claim, which includes a smoke detector circuit powered by batteries contained within the housing.
15. A smoke detector according to any preceding claim, including means for attachment to the light fi.tti.ng
16. A smoke detector according to Claim 15, in which the means for attachment to a light fitting comprises a screw threaded boss.
GB8817974A 1988-07-28 1988-07-28 Smoke detector Withdrawn GB2221331A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB8817974A GB2221331A (en) 1988-07-28 1988-07-28 Smoke detector
PCT/GB1989/000866 WO1990001201A1 (en) 1988-07-28 1989-07-28 Warning device
AU40595/89A AU4059589A (en) 1988-07-28 1989-07-28 Warning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8817974A GB2221331A (en) 1988-07-28 1988-07-28 Smoke detector

Publications (2)

Publication Number Publication Date
GB8817974D0 GB8817974D0 (en) 1988-09-01
GB2221331A true GB2221331A (en) 1990-01-31

Family

ID=10641253

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8817974A Withdrawn GB2221331A (en) 1988-07-28 1988-07-28 Smoke detector

Country Status (3)

Country Link
AU (1) AU4059589A (en)
GB (1) GB2221331A (en)
WO (1) WO1990001201A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2267594A (en) * 1992-06-03 1993-12-08 Ian Peter Oliver Lighting apparatus
GB2290900A (en) * 1994-06-20 1996-01-10 Timothy James Shepherd Lighting smoke alarm
GB2330015A (en) * 1997-06-21 1999-04-07 Howard St John Milton Decorative cover for ceiling rose
WO1999033036A1 (en) * 1997-12-11 1999-07-01 Groenstedt Rickard A fire alarm
GB2337841A (en) * 1998-05-28 1999-12-01 Mark Henry Herrington Combined light bulb fitting and smoke alarm
GB2371666A (en) * 2001-01-25 2002-07-31 James Turner Fire alarm and light fitting
WO2004055750A1 (en) * 2002-12-18 2004-07-01 Gerard Industries Pty Ltd Detector assembly suited to smoke alarms
US7109874B2 (en) 2001-03-14 2006-09-19 Acbond Limited Smoke detectors

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102754136B (en) * 2009-10-05 2014-09-10 佳卫士有限公司 Smoke alarm

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4090178A (en) * 1976-08-09 1978-05-16 Norris Elwood G Combination smoke detector and lamp structure
GB2008871A (en) * 1977-11-21 1979-06-06 Esb Int Corp Auxiliary lighting systems associated with an alarm system
GB2155708A (en) * 1984-02-24 1985-09-25 Colin Robert Francis Electrical devices
US4694281A (en) * 1982-09-16 1987-09-15 Mcdermott Julian A Visual alarm apparatus
GB2189634A (en) * 1986-04-23 1987-10-28 Lawrence Benson Fire protection device
US4717910A (en) * 1985-11-12 1988-01-05 Scripps Keith A Detector and light assembly

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4199754A (en) * 1977-11-21 1980-04-22 Esb Incorporated Circuit for an emergency lighting and fire detector system
US4255746A (en) * 1977-11-21 1981-03-10 Esb Inc. Emergency lighting and fire detector system
US4529976A (en) * 1982-10-29 1985-07-16 Frederick M. Jameson Smoke detector with masking shield
DE3420188C2 (en) * 1984-05-30 1986-04-10 Franz 8733 Bad Bocklet Mahlmeister Hazard alarm
US4694285A (en) * 1985-11-12 1987-09-15 Scripps Keith A Combination electrical light, smoke and/or heat detector

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4090178A (en) * 1976-08-09 1978-05-16 Norris Elwood G Combination smoke detector and lamp structure
GB2008871A (en) * 1977-11-21 1979-06-06 Esb Int Corp Auxiliary lighting systems associated with an alarm system
US4694281A (en) * 1982-09-16 1987-09-15 Mcdermott Julian A Visual alarm apparatus
GB2155708A (en) * 1984-02-24 1985-09-25 Colin Robert Francis Electrical devices
US4717910A (en) * 1985-11-12 1988-01-05 Scripps Keith A Detector and light assembly
GB2189634A (en) * 1986-04-23 1987-10-28 Lawrence Benson Fire protection device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2267594A (en) * 1992-06-03 1993-12-08 Ian Peter Oliver Lighting apparatus
GB2290900A (en) * 1994-06-20 1996-01-10 Timothy James Shepherd Lighting smoke alarm
GB2330015A (en) * 1997-06-21 1999-04-07 Howard St John Milton Decorative cover for ceiling rose
WO1999033036A1 (en) * 1997-12-11 1999-07-01 Groenstedt Rickard A fire alarm
GB2337841A (en) * 1998-05-28 1999-12-01 Mark Henry Herrington Combined light bulb fitting and smoke alarm
GB2371666A (en) * 2001-01-25 2002-07-31 James Turner Fire alarm and light fitting
US7109874B2 (en) 2001-03-14 2006-09-19 Acbond Limited Smoke detectors
WO2004055750A1 (en) * 2002-12-18 2004-07-01 Gerard Industries Pty Ltd Detector assembly suited to smoke alarms
AU2003287769B2 (en) * 2002-12-18 2008-05-29 Clipsal Australia Pty Ltd Detector assembly suited to smoke alarms
CN100437652C (en) * 2002-12-18 2008-11-26 奇胜(澳大利亚)有限公司 Detector assembly suited to smoke alarms

Also Published As

Publication number Publication date
GB8817974D0 (en) 1988-09-01
AU4059589A (en) 1990-02-19
WO1990001201A1 (en) 1990-02-08

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)