JPS63183469U - - Google Patents
Info
- Publication number
- JPS63183469U JPS63183469U JP7431387U JP7431387U JPS63183469U JP S63183469 U JPS63183469 U JP S63183469U JP 7431387 U JP7431387 U JP 7431387U JP 7431387 U JP7431387 U JP 7431387U JP S63183469 U JPS63183469 U JP S63183469U
- Authority
- JP
- Japan
- Prior art keywords
- air duct
- sound source
- wave motion
- sensor
- disposed
- 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
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7431387U JPS63183469U (nl) | 1987-05-20 | 1987-05-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7431387U JPS63183469U (nl) | 1987-05-20 | 1987-05-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63183469U true JPS63183469U (nl) | 1988-11-25 |
Family
ID=30919416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7431387U Pending JPS63183469U (nl) | 1987-05-20 | 1987-05-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63183469U (nl) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6248911A (ja) * | 1985-08-28 | 1987-03-03 | Nippon Soken Inc | 能動的消音装置 |
-
1987
- 1987-05-20 JP JP7431387U patent/JPS63183469U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6248911A (ja) * | 1985-08-28 | 1987-03-03 | Nippon Soken Inc | 能動的消音装置 |