JPS5439182A - Optical smoke detector with trouble detection function - Google Patents

Optical smoke detector with trouble detection function

Info

Publication number: JPS5439182A
Authority: JP; Japan
Prior art keywords: detection function; smoke detector; trouble detection; optical smoke; trouble
Prior art date: 1977-09-02
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

JP10552077A

Other languages

Japanese (ja)

Other versions

JPS5921511B2 (en

Inventor

Hiroshi Tagashira

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.)

Nittan Co Ltd

Original Assignee

Nittan Co 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.)

1977-09-02

Filing date

1977-09-02

Publication date

1979-03-26

1977-09-02 Application filed by Nittan Co Ltd filed Critical Nittan Co Ltd

1977-09-02 Priority to JP52105520A priority Critical patent/JPS5921511B2/en

1979-03-26 Publication of JPS5439182A publication Critical patent/JPS5439182A/en

1984-05-21 Publication of JPS5921511B2 publication Critical patent/JPS5921511B2/en

Status Expired legal-status Critical Current

Links

238000001514 detection method Methods 0.000 title 1
230000003287 optical effect Effects 0.000 title 1
239000000779 smoke Substances 0.000 title 1

Landscapes

Investigating Or Analysing Materials By Optical Means (AREA)
Fire-Detection Mechanisms (AREA)
Alarm Systems (AREA)

JP52105520A 1977-09-02 1977-09-02 Optical smoke detector with failure detection function Expired JPS5921511B2 (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
JP52105520A JPS5921511B2 (en)	1977-09-02	1977-09-02	Optical smoke detector with failure detection function

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
JP52105520A JPS5921511B2 (en)	1977-09-02	1977-09-02	Optical smoke detector with failure detection function

Publications (2)

Publication Number	Publication Date
JPS5439182A true JPS5439182A (en)	1979-03-26
JPS5921511B2 JPS5921511B2 (en)	1984-05-21

Family

ID=14409867

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
JP52105520A Expired JPS5921511B2 (en)	1977-09-02	1977-09-02	Optical smoke detector with failure detection function

Country Status (1)

Country	Link
JP (1)	JPS5921511B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5399154A (en) *	1977-02-07	1978-08-30	Rieber & Son As	Forming element and sealing ring combined
JPS6030089U (en) *	1983-07-30	1985-02-28	松下電工株式会社	photoelectric smoke detector

Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS4423947Y1 (en) *	1967-01-18	1969-10-09

1977
- 1977-09-02 JP JP52105520A patent/JPS5921511B2/en not_active Expired

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS4423947Y1 (en) *	1967-01-18	1969-10-09

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5399154A (en) *	1977-02-07	1978-08-30	Rieber & Son As	Forming element and sealing ring combined
JPS6030089U (en) *	1983-07-30	1985-02-28	松下電工株式会社	photoelectric smoke detector

Also Published As

Publication number	Publication date
JPS5921511B2 (en)	1984-05-21

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