JPH055388Y2 - - Google Patents
Info
- Publication number
- JPH055388Y2 JPH055388Y2 JP13323288U JP13323288U JPH055388Y2 JP H055388 Y2 JPH055388 Y2 JP H055388Y2 JP 13323288 U JP13323288 U JP 13323288U JP 13323288 U JP13323288 U JP 13323288U JP H055388 Y2 JPH055388 Y2 JP H055388Y2
- Authority
- JP
- Japan
- Prior art keywords
- shutter
- noise
- blade
- low
- butterfly
- 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 - Lifetime
Links
- 239000012528 membrane Substances 0.000 claims description 6
- 238000007664 blowing Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 244000241796 Christia obcordata Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 210000003746 feather Anatomy 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Duct Arrangements (AREA)
- Air-Flow Control Members (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13323288U JPH055388Y2 (en]) | 1988-10-11 | 1988-10-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13323288U JPH055388Y2 (en]) | 1988-10-11 | 1988-10-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0255044U JPH0255044U (en]) | 1990-04-20 |
| JPH055388Y2 true JPH055388Y2 (en]) | 1993-02-12 |
Family
ID=31390905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13323288U Expired - Lifetime JPH055388Y2 (en]) | 1988-10-11 | 1988-10-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH055388Y2 (en]) |
-
1988
- 1988-10-11 JP JP13323288U patent/JPH055388Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0255044U (en]) | 1990-04-20 |
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