JPH0175740U - - Google Patents
Info
- Publication number
- JPH0175740U JPH0175740U JP1987171456U JP17145687U JPH0175740U JP H0175740 U JPH0175740 U JP H0175740U JP 1987171456 U JP1987171456 U JP 1987171456U JP 17145687 U JP17145687 U JP 17145687U JP H0175740 U JPH0175740 U JP H0175740U
- Authority
- JP
- Japan
- Prior art keywords
- metal
- diameter cylindrical
- cylindrical body
- diameter
- sound deadening
- 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
- 239000002184 metal Substances 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 claims 2
- 239000000463 material Substances 0.000 claims 1
- 239000007769 metal material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000011491 glass wool Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Duct Arrangements (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987171456U JPH0175740U (enExample) | 1987-11-10 | 1987-11-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987171456U JPH0175740U (enExample) | 1987-11-10 | 1987-11-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0175740U true JPH0175740U (enExample) | 1989-05-23 |
Family
ID=31463303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987171456U Pending JPH0175740U (enExample) | 1987-11-10 | 1987-11-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0175740U (enExample) |
-
1987
- 1987-11-10 JP JP1987171456U patent/JPH0175740U/ja active Pending