GB9819638D0 - Projected beam-type smoke detector and receiving unit - Google Patents

Projected beam-type smoke detector and receiving unit

Info

Publication number
GB9819638D0
GB9819638D0 GBGB9819638.9A GB9819638A GB9819638D0 GB 9819638 D0 GB9819638 D0 GB 9819638D0 GB 9819638 A GB9819638 A GB 9819638A GB 9819638 D0 GB9819638 D0 GB 9819638D0
Authority
GB
United Kingdom
Prior art keywords
receiving unit
smoke detector
type smoke
projected beam
projected
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Withdrawn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
GBGB9819638.9A
Other versions
GB2326474A (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.)
Hochiki Corp
Original Assignee
Hochiki Corp
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
Priority claimed from JP23086494A external-priority patent/JP3195881B2/en
Priority claimed from JP6230863A external-priority patent/JPH0896266A/en
Application filed by Hochiki Corp filed Critical Hochiki Corp
Priority claimed from GB9519445A external-priority patent/GB2293877B/en
Publication of GB9819638D0 publication Critical patent/GB9819638D0/en
Publication of GB2326474A publication Critical patent/GB2326474A/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Withdrawn legal-status Critical Current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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire Alarms (AREA)
  • Fire-Detection Mechanisms (AREA)
GB9819638A 1994-09-27 1995-09-22 Projected beam type smoke detector and receiving unit Withdrawn GB2326474A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP23086494A JP3195881B2 (en) 1994-09-27 1994-09-27 Photoelectrically separated smoke detector and receiver
JP6230863A JPH0896266A (en) 1994-09-27 1994-09-27 Photoelectric separation type smoke sensor and receiver
GB9519445A GB2293877B (en) 1994-09-27 1995-09-22 Projected beam-type smoke detector and receiving unit

Publications (2)

Publication Number Publication Date
GB9819638D0 true GB9819638D0 (en) 1998-11-04
GB2326474A GB2326474A (en) 1998-12-23

Family

ID=27267918

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9819638A Withdrawn GB2326474A (en) 1994-09-27 1995-09-22 Projected beam type smoke detector and receiving unit

Country Status (1)

Country Link
GB (1) GB2326474A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59172094A (en) * 1983-03-21 1984-09-28 能美防災株式会社 Optoelectric smoke sensor with smoke detecting function tester

Also Published As

Publication number Publication date
GB2326474A (en) 1998-12-23

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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)