JPS61104130U - - Google Patents
Info
- Publication number
- JPS61104130U JPS61104130U JP18848984U JP18848984U JPS61104130U JP S61104130 U JPS61104130 U JP S61104130U JP 18848984 U JP18848984 U JP 18848984U JP 18848984 U JP18848984 U JP 18848984U JP S61104130 U JPS61104130 U JP S61104130U
- Authority
- JP
- Japan
- Prior art keywords
- frames
- treads
- opening
- air flow
- flow passage
- 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.)
- Granted
Links
- 239000000428 dust Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Respiratory Apparatuses And Protective Means (AREA)
- Ventilation (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984188489U JPH0440120Y2 (nl) | 1984-12-11 | 1984-12-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984188489U JPH0440120Y2 (nl) | 1984-12-11 | 1984-12-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61104130U true JPS61104130U (nl) | 1986-07-02 |
| JPH0440120Y2 JPH0440120Y2 (nl) | 1992-09-21 |
Family
ID=30745952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984188489U Expired JPH0440120Y2 (nl) | 1984-12-11 | 1984-12-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0440120Y2 (nl) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4939255A (nl) * | 1972-08-23 | 1974-04-12 |
-
1984
- 1984-12-11 JP JP1984188489U patent/JPH0440120Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4939255A (nl) * | 1972-08-23 | 1974-04-12 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0440120Y2 (nl) | 1992-09-21 |