A multi-wheel system that minimizes wheel interactions with discontinuous and uneven surfaces. The multi-wheel system comprises wheels of varying diameters connecting to a rotating arm configured to raise and lower the wheels in response to obstacles along the rolling surface.

An axle-free wheel comprising: an outer rim member having a ground interface on an external surface thereof and an outer ball race or rolling race on an inner surface thereof; an inner rim member having an inner ball or rolling race on an outer surface thereof.

A wheeled luggage case comprises (a) a storage chamber, (b) a cover defining an opening on at least one side of the storage chamber for providing ready access therein and at least two labyrinth axle-free wheels operatively connected to the chamber for towing the case along a ground surface. The labyrinth axle-free wheel comprises an internal rim, an external rim provided with a ground interface, rollers being rotatably disposed within a roller spacer between the internal and external rims in a uniform circumferential manner by means of a spacer and external covers. A labyrinth type dust passage in the wheel is defined by the rims and the external plates mechanically connected to the internal rim.

Protective systems for a luggage piece may include a deformable body and a cover. The cover may be configured to overlie and to be coupled with the deformable body. The cover may be more rigid than the deformable body. The deformable body may include an interior shape at least partially complementary to a recess formed in an exterior surface of the luggage piece. The deformable body may be joined to the luggage piece when positioned at least partially in the recess. External impacts exerted on the cover may be transmitted across the cover such that the forces associated with such external impacts may be exerted on the deformable body across a larger surface area than a surface area of the cover receiving the external impacts and may be at least partially absorbed by the deformable body.

A hollow wheel assembly of a luggage includes a wheel mount, two wheel members, and a hollow shaft. The wheel mount has a shaft sleeve, in which the hollow shaft is received. The wheel members are connected to opposite ends of the hollow shaft for free rotation. The hollow shaft has a vision passage, and the wheel members have a plurality of vision bores, whereby one may see through the wheel members via the vision bores and the vision passages when the wheel members are rotating.

An axle-free wheel comprising: an outer rim member having a ground interface on an external surface thereof and an outer ball race or rolling race on an inner surface thereof; an inner rim member having an inner ball or rolling race on an outer surface thereof.

The present invention relates to a roller component having a suspension and a roller mounting rack. One end of the roller mounting rack has a cavity and is disposed inside the suspension in a sleeved manner. An articulated shaft is located inside the cavity. Two ends of the articulated shaft respectively pass through corresponding inner wall of the cavity and are connected to the suspension to make the roller mounting rack connected to the suspension in an articulated manner; a spring in a pre-compressed state is embedded in the cavity, and sleeved on the articulated shaft; the other end of the roller mounting rack is intended to mount a roller. The present invention plays a buffering and cushioning role to the roller and can raise the contact area and adhesive force of the roller with the ground surface and make the roller cling to the ground and move steadily.

A trolley case capable of displaying weight in a static state allows the bracket fixing shaft not to offset in a radial direction through the configurations of a directional bearing and shaft liner, and allows a weighing transducer to sense the weight of a case body accurately by installing the weighing transducer on the directional bearing and fixing the weighing transducer to the upper end face of the bracket fixing shaft, thereby not causing a weight displaying value to change, realizing a static display, and thus giving users the convenience of use.

A wheel assembly includes a wheel axle, an inner wheel, and an outer wheel. The inner wheel is mounted on the wheel axle. The inner wheel is rotatable about the wheel axle. The inner wheel is rotatably retained in the outer wheel. The inner and outer wheels include a gap therebetween, and the outer wheel is rotatable eccentrically about the wheel axle.

A wheel adapter to convert a storage container to a wheeled storage container is provided. The wheel adapter comprises a mounting bracket attachable to the storage container. The mounting bracket comprises a first leg configured to engage a bottom surface of the storage container, and a second leg configured to engage a side surface of the storage container. The second leg comprises a wheel coupling. The wheel adapter also includes a wheel rotatably connected to the wheel coupling. The wheel is constructed and arranged for rotation about an axis to provide rolling support of the storage container on the ground.