Device to clean surfaces has wiper with dirt remover attached to triangular holding plate with right-angled corner in front and back edge behind, whereby back free corners have projections jutting over back edge of holding plate

摘要

Device (1) has holding plate (3) and wiper (2) encompassing detachable flat dirt remover (4) attached to it. Holding plate has basic outline of a equilateral triangle, with essentially an almost right-angled corner (13) in front in the main direction of wiping (H) and a back edge (18) extending obliquely to the main direction of wiping. Both back free corners (17) of holding plate are equipped with projections (14) pointing backwards which jut over the back edge of the holding plate.