FIELD: transport.
SUBSTANCE: proposed structure comprises long plate with one end articulated with the step. Said plate comprises bottom side and opposed top side. Long front load-bearing element is articulated by its one end with the plate bottom side. First moving connection element articulated with the plate bottom side to fold thereto and with front bearing element to unfold or fold the latter relative to said plate. Seat one end is articulated with the plate other end. Seat comprises bottom side and opposed top side. Long front load-bearing element is articulated by its one end with the plate bottom side. First moving connection element articulated with the plate bottom side to fold thereto and with front bearing element to unfold or fold the latter relative to said plate.
EFFECT: rolling at upright or sitting position.
16 cl, 5 dwg
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