JPS6228294U - - Google Patents

Info

Publication number
JPS6228294U
JPS6228294U JP11821385U JP11821385U JPS6228294U JP S6228294 U JPS6228294 U JP S6228294U JP 11821385 U JP11821385 U JP 11821385U JP 11821385 U JP11821385 U JP 11821385U JP S6228294 U JPS6228294 U JP S6228294U
Authority
JP
Japan
Prior art keywords
light
filter
type smoke
light receiver
attenuation
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
JP11821385U
Other languages
English (en)
Japanese (ja)
Other versions
JPH044318Y2 (enrdf_load_stackoverflow
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 filed Critical
Priority to JP1985118213U priority Critical patent/JPH044318Y2/ja
Publication of JPS6228294U publication Critical patent/JPS6228294U/ja
Application granted granted Critical
Publication of JPH044318Y2 publication Critical patent/JPH044318Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Fire-Detection Mechanisms (AREA)
JP1985118213U 1985-08-02 1985-08-02 Expired JPH044318Y2 (enrdf_load_stackoverflow)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1985118213U JPH044318Y2 (enrdf_load_stackoverflow) 1985-08-02 1985-08-02

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985118213U JPH044318Y2 (enrdf_load_stackoverflow) 1985-08-02 1985-08-02

Publications (2)

Publication Number Publication Date
JPS6228294U true JPS6228294U (enrdf_load_stackoverflow) 1987-02-20
JPH044318Y2 JPH044318Y2 (enrdf_load_stackoverflow) 1992-02-07

Family

ID=31004455

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985118213U Expired JPH044318Y2 (enrdf_load_stackoverflow) 1985-08-02 1985-08-02

Country Status (1)

Country Link
JP (1) JPH044318Y2 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0365570U (enrdf_load_stackoverflow) * 1989-10-30 1991-06-26
JP2013073591A (ja) * 2011-09-29 2013-04-22 Nohmi Bosai Ltd 光電式分離型煙感知器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52133768A (en) * 1976-04-30 1977-11-09 Mitsubishi Electric Corp Light wmi ssion quantity control type photo coupler
JPS53113587A (en) * 1977-03-14 1978-10-04 Nec Corp Operation testing method of smoke detector
JPS56135149U (enrdf_load_stackoverflow) * 1980-03-14 1981-10-13

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52133768A (en) * 1976-04-30 1977-11-09 Mitsubishi Electric Corp Light wmi ssion quantity control type photo coupler
JPS53113587A (en) * 1977-03-14 1978-10-04 Nec Corp Operation testing method of smoke detector
JPS56135149U (enrdf_load_stackoverflow) * 1980-03-14 1981-10-13

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0365570U (enrdf_load_stackoverflow) * 1989-10-30 1991-06-26
JP2013073591A (ja) * 2011-09-29 2013-04-22 Nohmi Bosai Ltd 光電式分離型煙感知器

Also Published As

Publication number Publication date
JPH044318Y2 (enrdf_load_stackoverflow) 1992-02-07

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