the elements being rotary or moving along a closed circular path, e.g. rotary cutter, digging wheels

Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice > Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying elements, e.g. conveying pneumatically > dislodging essentially by driven elements > the elements being rotary or moving along a closed circular path, e.g. rotary cutter, digging wheels

Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice (by applying de-icing agents E01H10/00; obstruction removers on vehicles B60R19/00; sand, gravel or salt spreaders E01C19/20) > Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying elements, conveying pneumatically (E01H5/10, E01H5/12 take precedence) > dislodging essentially by driven elements, > the elements being rotary or moving along a closed circular path, e.g. rotary cutter, digging wheels