JPS6143904Y2 - - Google Patents
Info
- Publication number
- JPS6143904Y2 JPS6143904Y2 JP1809080U JP1809080U JPS6143904Y2 JP S6143904 Y2 JPS6143904 Y2 JP S6143904Y2 JP 1809080 U JP1809080 U JP 1809080U JP 1809080 U JP1809080 U JP 1809080U JP S6143904 Y2 JPS6143904 Y2 JP S6143904Y2
- Authority
- JP
- Japan
- Prior art keywords
- hole
- ventilation
- sound
- air
- air cylinder
- 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.)
- Expired
Links
- 238000009423 ventilation Methods 0.000 claims description 35
- 239000011358 absorbing material Substances 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000013016 damping Methods 0.000 claims description 2
- 230000003584 silencer Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
Landscapes
- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
- Combined Devices Of Dampers And Springs (AREA)
- Fluid-Damping Devices (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1809080U JPS6143904Y2 (en]) | 1980-02-16 | 1980-02-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1809080U JPS6143904Y2 (en]) | 1980-02-16 | 1980-02-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56119867U JPS56119867U (en]) | 1981-09-12 |
| JPS6143904Y2 true JPS6143904Y2 (en]) | 1986-12-11 |
Family
ID=29614417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1809080U Expired JPS6143904Y2 (en]) | 1980-02-16 | 1980-02-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6143904Y2 (en]) |
-
1980
- 1980-02-16 JP JP1809080U patent/JPS6143904Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56119867U (en]) | 1981-09-12 |
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