IMPROVEMENTS IN OR RELATING TO CASTOR WHEELS

摘要

A castor wheel arrangement comprises a roll (7) turnable about a horizontal first axis (H1), a bracket (8) mounting the roll (7) for turning about the axis (H1) and turnable about a second axis (P) substantially perpendicular to the first axis (H1), a hinge lower leaf (10) or a rocking member mounting the bracket (8) for turning about the second axis (P) and turnable about a horizontal third axis (H2) substantially perpendicular to the second axis (P), and a hinge upper leaf (13) or a supporting cap mounting the hinge lower leaf (10) or the rocking member, as the case may be, for turning about the third axis (H2) and fixed to a frame (1) of a trolley.