A luggage protection system including a luggage body. The luggage body has a bottom side, a front face, a handle face, at least one lateral face sharing an edge with each of the bottom side, the front face, and the handle face. The luggage protection system further includes a ground detection unit attached to the luggage body. The ground detection unit is configured to determine whether the ground adjacent to the luggage body is substantially level. The luggage protection system further includes a drive system configured to propel the luggage body. The luggage protection system further includes a communication system, wherein the communication system is configured to transmit a warning signal in response to the around detection unit determining the ground adjacent to the luggage body is not substantially level.

A luggage with transverse displacement wheels includes a luggage body (1) having a giving-away surface (16) located on the junction between the bottom panel (13) and back panel (11) thereof, a transverse displacement wheel (2) mounted to each side panel (15) of the luggage body (1). The transverse displacement wheel (2) includes a wheel holder (21) coupled to one respective side panel (15) near the giving-away surface (16) and a tire (22) pivotally mounted on the wheel holder (21). The wheel holder (21) is transversely slidable relative to the luggage body (1) and lockable to the luggage body (1) in one of a series of positions near or far from the front panel (12) to let a relatively smaller or larger part of the tire (22) protrude over the giving-away surface (16), facilitating storage or moving on stairs of an uneven road surface.

A luggage with rotary displacement wheels includes a luggage body (1) having a giving-away surface (16) located on the junction between the bottom panel (13) and back panel (11) thereof, a rotary displacement wheel (2) mounted to each side panel (15) of the luggage body (1). The rotary displacement wheel (2) includes a wheel holder (21) eccentrically pivoted to one respective side panel (15) near the giving-away surface (16) and a tire (22) pivotally mounted on the wheel holder (21). The wheel holder (21) is turnable relative to the luggage body (1) between a first position near the front panel (12) to let a relatively smaller part of the tire (22) protrude over the giving-away surface (16) and a second position far from the front panel (12) to let a relatively larger part of the tire (22) protrude over the giving-away surface (16).

A travel bag is provided. The travel bag comprising: a frame having at least three wheels attached thereto, each of the wheels being configured to be contact to a ground; a case being configured to have an empty space to receive objects and also being configured to be disposed on the frame; and a pivot axis being located on or above the frame, the pivot axis being defined by two contact points or a contact line connecting the case and the frame. The case disposed on the frame is allowed to pivot on the pivot axis to draw a trajectory of an arc or a circle. All of the wheels are configured to be maintained as being continuously contact to the ground, regardless of the case's pivoting around the pivot axis.

A device capable of manually raising or lowering a means for transporting a load to assist overcoming obstacles, including an arm automatically articulated about an articulation attached to the means for transporting the load between a first position retracted by the weight of the load and a second position deployed by the action of an elastic element, and a damping system capable of storing and releasing potential energy and of restoring it when the means for transporting the load is raised to overcome an obstacle and capable of absorbing shocks suffered by the transport means while overcoming a difference in level.

A luggage with rotary displacement wheels includes a luggage body (1) having a giving-away surface (16) located on the junction between the bottom panel (13) and back panel (11) thereof, a rotary displacement wheel (2) mounted to each side panel (15) of the luggage body (1). The rotary displacement wheel (2) includes a wheel holder (21) eccentrically pivoted to one respective side panel (15) near the giving-away surface (16) and a tire (22) pivotally mounted on the wheel holder (21). The wheel holder (21) is turnable relative to the luggage body (1) between a first position near the front panel (12) to let a relatively smaller part of the tire (22) protrude over the giving-away surface (16) and a second position far from the front panel (12) to let a relatively larger part of the tire (22) protrude over the giving-away surface (16).

A luggage with transverse displacement wheels includes a luggage body (1) having a giving-away surface (16) located on the junction between the bottom panel (13) and back panel (11) thereof, a transverse displacement wheel (2) mounted to each side panel (15) of the luggage body (1). The transverse displacement wheel (2) includes a wheel holder (21) coupled to one respective side panel (15) near the giving-away surface (16) and a tire (22) pivotally mounted on the wheel holder (21). The wheel holder (21) is transversely slidable relative to the luggage body (1) and lockable to the luggage body (1) in one of a series of positions near or far from the front panel (12) to let a relatively smaller or larger part of the tire (22) protrude over the giving-away surface (16), facilitating storage or moving on stairs of an uneven road surface.

Device for manually lifting a load such as a cart, suitcase and the like, making it easier to ascend and descend staircases and various obstacles. The device has a first part comprising a frame secured to wheels, and handles being fixed to the frame. A second part comprises a load support secured to the wheels and a load being mounted in a fixed manner on the load support, the second part being able to slide with respect to the first part by the action of a telescopic lever arm in order to ascend a step of a staircase in two phases, the telescopic lever arm being fixed to the handles by a first articulation, a second articulation connecting the telescopic lever arm to a transmission which is in turn connected by a third articulation to the load support of the second part.

Device for manually lifting a load with a lever for a cart, suitcase and the like, making it easier to ascend and descend staircases and various obstacles, said device comprising two parts:a first part comprising: a frame (1) secured to wheels (2), the wheels (2) and the handles (3) being fixed to the frame (1),a second part comprising: a load support (4) secured to wheels (5), the wheels (5) and a load (12) being mounted in a fixed manner on the load support (4), the second part being able to slide with respect to the first part by the action of a telescopic lever arm (10) in order to ascend a step of a staircase in two phases, the telescopic lever arm (10) being fixed to the handles (3) by an articulation (9), a second articulation (8) connecting the telescopic lever arm (10) to a transmission (6) which is in turn connected by a third articulation (7) to the load support (4) of the second part.

A suitcase is provided with: a main body adapted to store article therein; a lid formed at the main body to open and close the main body; a plurality of annular rotators each surrounding an outer periphery of the main body and rotatably attached to the main body; a handle fixed to the main body to pull the main body; and a grounding piece formed at the outer periphery of the main body to keep the main body standing.