Dust-proof blackboard eraser
The utility model provides a dust-proof blackboard eraser. The lower part of the eraser is a hair brush. Wherein, a concave sponge is connected with the periphery of the blackboard eraser. When the blackboard eraser is used to remove the letters, the concave sponge around can hold back the chalk dus...
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| Format: | Patent |
| Sprache: | eng |
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| Online-Zugang: | Volltext bestellen |
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| Zusammenfassung: | The utility model provides a dust-proof blackboard eraser. The lower part of the eraser is a hair brush. Wherein, a concave sponge is connected with the periphery of the blackboard eraser. When the blackboard eraser is used to remove the letters, the concave sponge around can hold back the chalk dust removed and avoid flying towards the periphery. The utility model has the advantages of simple structure and good dust-proof effect. |
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