JPS5229796A - Smoke detector - Google Patents
Smoke detectorInfo
- 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
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4946989A (en) * | 1972-09-11 | 1974-05-07 |
-
1975
- 1975-09-01 JP JP10630475A patent/JPS5229796A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4946989A (en) * | 1972-09-11 | 1974-05-07 |
Cited By (7)
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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