JPH0517027Y2 - - Google Patents
Info
- Publication number
- JPH0517027Y2 JPH0517027Y2 JP10115486U JP10115486U JPH0517027Y2 JP H0517027 Y2 JPH0517027 Y2 JP H0517027Y2 JP 10115486 U JP10115486 U JP 10115486U JP 10115486 U JP10115486 U JP 10115486U JP H0517027 Y2 JPH0517027 Y2 JP H0517027Y2
- Authority
- JP
- Japan
- Prior art keywords
- blackboard
- blackboard wiping
- chamber
- brush
- manual
- 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
- 238000004140 cleaning Methods 0.000 claims description 25
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 21
- 238000005192 partition Methods 0.000 claims description 9
- 230000000630 rising effect Effects 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 239000000843 powder Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Landscapes
- Drawing Aids And Blackboards (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10115486U JPH0517027Y2 (cs) | 1986-06-30 | 1986-06-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10115486U JPH0517027Y2 (cs) | 1986-06-30 | 1986-06-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS637597U JPS637597U (cs) | 1988-01-19 |
| JPH0517027Y2 true JPH0517027Y2 (cs) | 1993-05-07 |
Family
ID=30971640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10115486U Expired - Lifetime JPH0517027Y2 (cs) | 1986-06-30 | 1986-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0517027Y2 (cs) |
-
1986
- 1986-06-30 JP JP10115486U patent/JPH0517027Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS637597U (cs) | 1988-01-19 |
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