BLACKBOARD ERASER
PROBLEM TO BE SOLVED: To provide a blackboard eraser capable of sufficiently cleaning the surface of a blackboard (56) by fully satisfactorily removing chalk powders from the surface of the blackboard (56) without scattering the chalk powders around and without damaging the surface of the blackboard...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a blackboard eraser capable of sufficiently cleaning the surface of a blackboard (56) by fully satisfactorily removing chalk powders from the surface of the blackboard (56) without scattering the chalk powders around and without damaging the surface of the blackboard (56). SOLUTION: A structure is attached for vibrating an erasing member (34) for erasing the surface of the blackboard (56), in addition to arrangement of a sucking means (47) for sucking the air through the opening of a case (4) in which the erasing member (34) is arranged. COPYRIGHT: (C)2011,JPO&INPIT |
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