Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
2000-07-19
2001-12-18
Moore, Chris K. (Department: 1744)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
C015S326000, C015S347000, C015S393000
Reexamination Certificate
active
06330732
ABSTRACT:
FIELD OF THE INVENTION
The present invention is related to a dust collecting eraser, especially an improved dust collecting eraser that can rapidly collect the dust when users are erasing boards. Because of this, the environment around the board can stay clean.
DESCRIPTION OF THE INVENTION
The present invention is related to a dust collecting eraser, especially an improved dust collecting eraser that can rapidly collect the dust when users are erasing boards, so that the environment can stay clean.
Usually a blackboard or a whiteboard is set in the teaching place for teachers to write words, content of courses or to explain teaching materials. Some teachers write on the whiteboards with sign pens or whiteboard pens, but the material contained in the pens is a strong poisonous organic solvent, which evaporates easily and may harm one's health; others use chalk, and after writing words on the board for a period of time, they have to erase them with erasers. The dust of the chalk is pressed under the eraser and when the eraser moves, the dust drops and spreads all over. This fills the environment with chalk dust, and the dust may harm the teaching staffs and students, especially teachers and children. Teachers often write on the board with chalk, and when they erase the board, dust comes out and flies everywhere and it may harm ones health. The manufacturer of the eraser should make some improvement in this situation.
Therefore, many schools use chalk in class. Since the dust can severely harm ones health, a need for an improved eraser to fit in with environmental protection and health is present.
Thus, the present invention includes a dust collecting device for an eraser, which includes a box, which has an inside box to separate the inside space of the box into an inner and an outer space. An inhaler component and a ventilated dust bag are collocated. The dust bag is connected to a dust guide pipe work and forms a connective structure, so that users can operate the inhaler component at any time to absorb the dust into the dust bag. Thus, the dust is collected instead of floating and spreading in the air, so the environment can stay clean.
The second aspect of the present invention is related to the inner space of the inside box, in which is a ventilated dust bag. The dust bag is connected to a dust guide pipe work to form a connective structure, so that the dust bag can be easily taken apart from the embodiment.
In order to describe in detail the objects, characteristics and functions of the present invention, an example of an embodiment and figures relevant to the present invention are given as follows:
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Moore Chris K.
Rabin & Berdo P.C.
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