JPH0319892Y2 - - Google Patents
Info
- Publication number
- JPH0319892Y2 JPH0319892Y2 JP7697382U JP7697382U JPH0319892Y2 JP H0319892 Y2 JPH0319892 Y2 JP H0319892Y2 JP 7697382 U JP7697382 U JP 7697382U JP 7697382 U JP7697382 U JP 7697382U JP H0319892 Y2 JPH0319892 Y2 JP H0319892Y2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust valve
- mask
- exhaust
- valve seat
- cover
- 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 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000010006 flight Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Landscapes
- Respiratory Apparatuses And Protective Means (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7697382U JPS58179153U (ja) | 1982-05-27 | 1982-05-27 | マスク用排気弁装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7697382U JPS58179153U (ja) | 1982-05-27 | 1982-05-27 | マスク用排気弁装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58179153U JPS58179153U (ja) | 1983-11-30 |
| JPH0319892Y2 true JPH0319892Y2 (zh) | 1991-04-26 |
Family
ID=30086253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7697382U Granted JPS58179153U (ja) | 1982-05-27 | 1982-05-27 | マスク用排気弁装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58179153U (zh) |
-
1982
- 1982-05-27 JP JP7697382U patent/JPS58179153U/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58179153U (ja) | 1983-11-30 |
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