JPS643990U - - Google Patents
Info
- Publication number
- JPS643990U JPS643990U JP1987095340U JP9534087U JPS643990U JP S643990 U JPS643990 U JP S643990U JP 1987095340 U JP1987095340 U JP 1987095340U JP 9534087 U JP9534087 U JP 9534087U JP S643990 U JPS643990 U JP S643990U
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- piezoelectric element
- case
- rolling member
- rolling
- 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
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical group [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 2
- 229910052753 mercury Inorganic materials 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims 6
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Burglar Alarm Systems (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987095340U JPS643990U (en]) | 1987-06-23 | 1987-06-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987095340U JPS643990U (en]) | 1987-06-23 | 1987-06-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS643990U true JPS643990U (en]) | 1989-01-11 |
Family
ID=31320001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987095340U Pending JPS643990U (en]) | 1987-06-23 | 1987-06-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS643990U (en]) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61292568A (ja) * | 1985-06-17 | 1986-12-23 | エセツクス テクノロジ−ズ コ−ポレ−シヨン | 警報始動用センサ |
-
1987
- 1987-06-23 JP JP1987095340U patent/JPS643990U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61292568A (ja) * | 1985-06-17 | 1986-12-23 | エセツクス テクノロジ−ズ コ−ポレ−シヨン | 警報始動用センサ |