TRANSPORT FACILITY Russian patent published in 2011 - IPC A61G5/06 

FIELD: transport.

SUBSTANCE: folding carriage comprises the frame consisting of right and left semiframes, front small turning and rear drive bicycle-type wheels. Rear cross-like are arranged on fixed brackets. Front cross-like are arranged on movable brackets. In moving on staircase, cross-like brackets are linked with drive wheels by chain transmission. Transformation mechanism arranged at carriage bottom art lifts drive wheels and lowers movable brackets in changing the carriage into motion on staircase, and comprises control levers 3, movable brackets, tie rods 21 and position retainers 16.

EFFECT: ease of operation.

5 cl, 10 dwg