Abstract: A device comprising a planar element with a first wheel supported about a first rotary axis, a handle support, and a folding joint connecting the handle support to the planar element pivotal about a first pivotal axis such that in an operating state the handle support is aligned to a planar element at an angle, is provided. At least one second wheel is supported about a second rotary axis, at the distal end of the planar element. The second wheel is pivotal about a second pivotal axis and coupled to the handle support via a mechanism which converts a pivotal motion of the handle support about the first pivotal axis into a pivotal axis of the second wheel about the second pivotal axis such that the second rotary motion of the second wheel shows in the idle state a greater angle to the planar element than in the operating state.

Abstract: A suitcase has a pair of wheels installed at one side of a body of the suitcase and a handlebar projecting from the body of the suitcase on a side opposite where the wheels are installed and a board movable between a rest position drawn near the suitcase body and an operative position projecting from the suitcase body to hold up a suitcase user with the wheels installed on the suitcase body being steering and there being a kinematic connection between the handlebar and the wheels to control the steering. The steering wheels are movable between a retracted position near the suitcase body and an operative position extended far from the suitcase body.