| 发明名称 |
Blackboard wiper has cleaning cloth band which is driven over set of brushes to remove and trap dust in housing |
| 摘要 |
<p>The cloth band (30) moves over rollers (40) at each end of an intermediate part (60) and the reverse face is in contact with the brush (20). The cloth is tensioned by springs (51) on the shaft (50) in slotted holes (15) and the accumulated chalk dust is extracted through a spigot (113).</p> |
| 申请公布号 |
DE202004014482(U1) |
申请公布日期 |
2004.11.25 |
| 申请号 |
DE20042014482U |
申请日期 |
2004.09.15 |
| 申请人 |
LAI, SHYI HU;LAI, SHYI HWANG |
发明人 |
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| 分类号 |
B43L19/00;B43L21/00;B43L21/02;(IPC1-7):B43L21/00 |
主分类号 |
B43L19/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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