Automatic dust-removing blackboard
The utility model discloses an automatic dust-removing blackboard, which comprises a movable roll-type writing surface layer arranged on outer shells of a driving drum and a driven drum, wherein the writing surface layer is in a continuous tape shape, a layer gasket is supported through a plate surf...
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| creator | YAN YUNLING |
| description | The utility model discloses an automatic dust-removing blackboard, which comprises a movable roll-type writing surface layer arranged on outer shells of a driving drum and a driven drum, wherein the writing surface layer is in a continuous tape shape, a layer gasket is supported through a plate surface, and is sleeved on the outer shells of the driving drum and the driven drum to circularly rotate, the rear layer surface of the writing surface layer is contacted and matched with the outer shells of the two drums, the front layer surface of the writing surface layer is provided with a dust remover which is matched with the front layer surface in a friction and contact mode according to the reverse moving direction, since adopting the dust remover which is matched with the front layer surface of the writing surface layer in a friction and contact mode according to the reverse moving direction, the blackboard can automatically circulate the writing surface layer, and carries out dust removing and track removing |
| format | Patent |
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| language | chi ; eng |
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| subjects | ACCESSORIES FOR WRITING OR DRAWING ARTICLES FOR WRITING OR DRAWING UPON BUREAU ACCESSORIES PERFORMING OPERATIONS TRANSPORTING WRITING OR DRAWING IMPLEMENTS |
| title | Automatic dust-removing blackboard |
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