US Patent 10189655 Transporting apparatus

A transporting apparatus comprises a track (2) and at least one movable element (3) movable along said track (2), said movable element (3) comprising a supporting body (14), said track (2) comprising a first guiding surface (11a) and a further first guiding surface (lib) facing towards said supporting body (14), a second guiding surface (12a) and a further second guiding surface (12b) facing away from said supporting body (14), and a third guiding surface (13a) arranged transversally to said first guiding surface (11a) and said second guiding surface (12a) and a further third guiding surface (13b) arranged transversally to said further first guiding surface (lib) and said further second guiding surface (12b), wherein said movable element (3) comprises a first couple of rollers (15) slidably coupled to said first guiding surface (11a), a further first couple of rollers (16) slidably coupled to said further first guiding surface (lib), a second couple of rollers (17) slidably coupled to said second guiding surface (12a), a further second couple of rollers (18) slidably coupled to said further second guiding surface (12b), a third couple of rollers (19) slidably coupled to said third guiding surface (13a) and a further third couple of rollers (20) slidably coupled to said further third guiding surface (13b).