JPS629886Y2 - - Google Patents
Info
- Publication number
- JPS629886Y2 JPS629886Y2 JP5463280U JP5463280U JPS629886Y2 JP S629886 Y2 JPS629886 Y2 JP S629886Y2 JP 5463280 U JP5463280 U JP 5463280U JP 5463280 U JP5463280 U JP 5463280U JP S629886 Y2 JPS629886 Y2 JP S629886Y2
- Authority
- JP
- Japan
- Prior art keywords
- lantern
- intake
- filter
- shaped filter
- dust mask
- 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
- 239000000428 dust Substances 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 8
- 238000005192 partition Methods 0.000 description 6
- 238000009423 ventilation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Landscapes
- Respiratory Apparatuses And Protective Means (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5463280U JPS629886Y2 (en]) | 1980-04-23 | 1980-04-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5463280U JPS629886Y2 (en]) | 1980-04-23 | 1980-04-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56155851U JPS56155851U (en]) | 1981-11-20 |
| JPS629886Y2 true JPS629886Y2 (en]) | 1987-03-07 |
Family
ID=29649353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5463280U Expired JPS629886Y2 (en]) | 1980-04-23 | 1980-04-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS629886Y2 (en]) |
-
1980
- 1980-04-23 JP JP5463280U patent/JPS629886Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56155851U (en]) | 1981-11-20 |