JPH0255691B2 - - Google Patents
Info
- Publication number
- JPH0255691B2 JPH0255691B2 JP26193186A JP26193186A JPH0255691B2 JP H0255691 B2 JPH0255691 B2 JP H0255691B2 JP 26193186 A JP26193186 A JP 26193186A JP 26193186 A JP26193186 A JP 26193186A JP H0255691 B2 JPH0255691 B2 JP H0255691B2
- Authority
- JP
- Japan
- Prior art keywords
- damper
- drive mechanism
- ventilation fan
- screw rod
- rooftop ventilation
- 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 32
- 230000007246 mechanism Effects 0.000 claims description 29
- 230000003028 elevating effect Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000004071 soot Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26193186A JPS63118548A (ja) | 1986-11-05 | 1986-11-05 | 屋上換気扇 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26193186A JPS63118548A (ja) | 1986-11-05 | 1986-11-05 | 屋上換気扇 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63118548A JPS63118548A (ja) | 1988-05-23 |
| JPH0255691B2 true JPH0255691B2 (ar) | 1990-11-28 |
Family
ID=17368690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26193186A Granted JPS63118548A (ja) | 1986-11-05 | 1986-11-05 | 屋上換気扇 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63118548A (ar) |
-
1986
- 1986-11-05 JP JP26193186A patent/JPS63118548A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63118548A (ja) | 1988-05-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |