JPS5229796A - Smoke detector - Google Patents

Smoke detector

Info

Publication number
JPS5229796A
JPS5229796A JP10630475A JP10630475A JPS5229796A JP S5229796 A JPS5229796 A JP S5229796A JP 10630475 A JP10630475 A JP 10630475A JP 10630475 A JP10630475 A JP 10630475A JP S5229796 A JPS5229796 A JP S5229796A
Authority
JP
Japan
Prior art keywords
smoke detector
pulses
checking
time
warning
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.)
Pending
Application number
JP10630475A
Other languages
Japanese (ja)
Inventor
Yoshiharu Suzuki
Atsushi Yamada
Kensaburo Tanemura
Kazunari Morisue
Kuniharu Tatezuki
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP10630475A priority Critical patent/JPS5229796A/en
Publication of JPS5229796A publication Critical patent/JPS5229796A/en
Pending legal-status Critical Current

Links

Landscapes

  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

PURPOSE: To provide an inspection pulse generator of periods shorter than those for warning pulses in an oscillator for generation of warning pulses in order to let check pulses be generated at the time of checking, thereby reducing the checking time for smoke detectors.
COPYRIGHT: (C)1977,JPO&Japio
JP10630475A 1975-09-01 1975-09-01 Smoke detector Pending JPS5229796A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10630475A JPS5229796A (en) 1975-09-01 1975-09-01 Smoke detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10630475A JPS5229796A (en) 1975-09-01 1975-09-01 Smoke detector

Publications (1)

Publication Number Publication Date
JPS5229796A true JPS5229796A (en) 1977-03-05

Family

ID=14430262

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10630475A Pending JPS5229796A (en) 1975-09-01 1975-09-01 Smoke detector

Country Status (1)

Country Link
JP (1) JPS5229796A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54166391U (en) * 1978-05-12 1979-11-22
JPS5657943A (en) * 1979-10-15 1981-05-20 Matsushita Electric Works Ltd Smoke sensing system
JPS56172188U (en) * 1980-05-22 1981-12-19
JPH02221495A (en) * 1989-02-21 1990-09-04 Mitsui Toatsu Chem Inc Paper strength enhancer for z-axis and interlayer paper strength, method for enhancing, freeness improver and paper making
JPH02221494A (en) * 1989-02-21 1990-09-04 Mitsui Toatsu Chem Inc Paper strength enhancer for z-axis and interlayer paper strength, method for enhancing, freeness improver and paper making

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4946989A (en) * 1972-09-11 1974-05-07

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4946989A (en) * 1972-09-11 1974-05-07

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54166391U (en) * 1978-05-12 1979-11-22
JPS6217917Y2 (en) * 1978-05-12 1987-05-08
JPS5657943A (en) * 1979-10-15 1981-05-20 Matsushita Electric Works Ltd Smoke sensing system
JPS56172188U (en) * 1980-05-22 1981-12-19
JPH0116234Y2 (en) * 1980-05-22 1989-05-12
JPH02221495A (en) * 1989-02-21 1990-09-04 Mitsui Toatsu Chem Inc Paper strength enhancer for z-axis and interlayer paper strength, method for enhancing, freeness improver and paper making
JPH02221494A (en) * 1989-02-21 1990-09-04 Mitsui Toatsu Chem Inc Paper strength enhancer for z-axis and interlayer paper strength, method for enhancing, freeness improver and paper making

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