JPS5420699A - Ultrasonic alert device - Google Patents
Ultrasonic alert deviceInfo
- Publication number
- JPS5420699A JPS5420699A JP8633777A JP8633777A JPS5420699A JP S5420699 A JPS5420699 A JP S5420699A JP 8633777 A JP8633777 A JP 8633777A JP 8633777 A JP8633777 A JP 8633777A JP S5420699 A JPS5420699 A JP S5420699A
- Authority
- JP
- Japan
- Prior art keywords
- alert device
- ultrasonic
- ultrasonic alert
- detecting
- circuit
- 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
Links
Landscapes
- Radar Systems Or Details Thereof (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Burglar Alarm Systems (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8633777A JPS5420699A (en) | 1977-07-15 | 1977-07-15 | Ultrasonic alert device |
GB545378A GB1600430A (en) | 1977-02-14 | 1978-02-10 | Ultrasonic type motion detector |
DE19782805873 DE2805873C3 (de) | 1977-02-14 | 1978-02-11 | Ultraschall-Überwachungsanlage für bewegte Objekte |
AU33235/78A AU509986B1 (en) | 1977-02-14 | 1978-02-13 | Ultrasonic motion detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8633777A JPS5420699A (en) | 1977-07-15 | 1977-07-15 | Ultrasonic alert device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5420699A true JPS5420699A (en) | 1979-02-16 |
JPS6223265B2 JPS6223265B2 (ja) | 1987-05-22 |
Family
ID=13884023
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8633777A Granted JPS5420699A (en) | 1977-02-14 | 1977-07-15 | Ultrasonic alert device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5420699A (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61267897A (ja) * | 1985-05-23 | 1986-11-27 | 大阪瓦斯株式会社 | エレベータのかご内の異状発生検出装置 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5034199A (ja) * | 1973-06-21 | 1975-04-02 |
-
1977
- 1977-07-15 JP JP8633777A patent/JPS5420699A/ja active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5034199A (ja) * | 1973-06-21 | 1975-04-02 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61267897A (ja) * | 1985-05-23 | 1986-11-27 | 大阪瓦斯株式会社 | エレベータのかご内の異状発生検出装置 |
JPH0560156B2 (ja) * | 1985-05-23 | 1993-09-01 | Osaka Gas Co Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS6223265B2 (ja) | 1987-05-22 |
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