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In daily life, any males or females will naturally lose some hairs and danders on ground. When a chair is sliding here and there, some dirty stuffs as aforesaid will be stuck into wheel axles to damage the chair. Herein, we design a kind of wheels added with blades and these blades can automatically cut off dirty stuffs as aforesaid whenever they are stuck to a certain degree to ensure a longer life expectancy of wheels.
Far East University
Tainan City, Taiwan