JPH02118400U - - Google Patents
Info
- Publication number
- JPH02118400U JPH02118400U JP2609289U JP2609289U JPH02118400U JP H02118400 U JPH02118400 U JP H02118400U JP 2609289 U JP2609289 U JP 2609289U JP 2609289 U JP2609289 U JP 2609289U JP H02118400 U JPH02118400 U JP H02118400U
- Authority
- JP
- Japan
- Prior art keywords
- hole
- air chamber
- piezoelectric diaphragm
- piezoelectric
- cover
- 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
- 238000009423 ventilation Methods 0.000 claims description 5
- 230000002265 prevention Effects 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Transducers For Ultrasonic Waves (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2609289U JPH0728800Y2 (ja) | 1989-03-09 | 1989-03-09 | 圧電形送話器 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2609289U JPH0728800Y2 (ja) | 1989-03-09 | 1989-03-09 | 圧電形送話器 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02118400U true JPH02118400U (en]) | 1990-09-21 |
| JPH0728800Y2 JPH0728800Y2 (ja) | 1995-06-28 |
Family
ID=31247403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2609289U Expired - Fee Related JPH0728800Y2 (ja) | 1989-03-09 | 1989-03-09 | 圧電形送話器 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0728800Y2 (en]) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004325169A (ja) * | 2003-04-23 | 2004-11-18 | Matsushita Electric Ind Co Ltd | 流体の流れ計測装置 |
-
1989
- 1989-03-09 JP JP2609289U patent/JPH0728800Y2/ja not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004325169A (ja) * | 2003-04-23 | 2004-11-18 | Matsushita Electric Ind Co Ltd | 流体の流れ計測装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0728800Y2 (ja) | 1995-06-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |