An apparatus and a method for automatically erasing a...

B - Operations – Transporting – 43 – L

Patent

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B43L 21/00 (2006.01)

Patent

CA 2368143

The invention discloses an apparatus and a method for automatically erasing a blackboard, and more particularly, to an improved apparatus and method for automatically erasing the blackboard wherein the automatic erasing apparatus horizontally reciprocates relative to a blackboard. In the invention, two wiper members are positioned at outer ends of the erasing means rotatably installed at both ends with respect to the carriage. The eccentric axes are vertically mounted on the variable plates. By the variable plates, the left erasing means and one wiper member are moved in the right direction or in the left direction to contact or not to contact the right erasing means and the other wiper member.

L'invention concerne un dispositif et un procédé d'effacement automatique d'un tableau noir et, plus particulièrement, un dispositif et un procédé améliorés d'effacement automatique du tableau noir, le dispositif d'effacement automatique effectuant un mouvement de va-et-vient horizontal par rapport au tableau noir. Dans le procédé selon l'invention, deux chiffons d'essuyage sont disposés aux extrémités extérieures du dispositif d'effacement monté rotatif aux deux extrémités du support. Les axes excentriques sont montés à la verticale sur les plaques réglables. Grâce aux plaques réglables, le dispositif d'effacement à gauche et un chiffon d'essuyage sont déplacés vers la droite ou vers la gauche pour entrer en contact ou non avec le dispositif d'effacement à droite et l'autre chiffon d'essuyage.

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