A castor assembly includes a base, a wheel unit and a rotation shaft. The wheel unit is located under the base and includes a pivot member, an elastic member biased and exposed between the base and the pivot member, and two rollers mounted on the pivot member. The rotation shaft is mounted between the base and the wheel unit and extends through the elastic member. The rotation shaft has a periphery provided with an operation slot. A positioning pin extends through the pivot member and is slidable in the operation slot of the rotation shaft. Thus, the elastic member is exposed outward so that the user clearly sees the elastic member and knows the shock-absorbing function provided by the elastic member.

An injection-molded container or shell, in particular a suitcase shell made of plastic, A) is made of foamed plastic and has gas channels and/or B) is made using physically or chemically foamed plastic and/or a plastic mixed with hollow fillers and/or C) is integrally made with wheel mounting axles and/or extendable rod buffers and/or extendable rod cavities.

Provided is a luggage piece that can be coupled to a second luggage piece to be transported together as a joined unit, and a luggage system including such luggage pieces. The luggage piece includes a housing for storing items to be transported therein, and a retractable handle provided to the housing. A plurality of rollers coupled to the housing allow the luggage piece to be rolled, and include at least two in-line rollers having a generally-fixed rolling direction. The second luggage piece includes two or more adjustable rollers having a variable rolling direction. A plurality of tethers couple the luggage piece and the second luggage piece together to form a joined unit that can be steered through adjustment of the rolling direction of the adjustable rollers.

The present invention is a wheeled suitcase that includes a suitcase body, a base, an elongated track, a handle, and a retractable wheel, mounted along the track, being moveable between an active position at which the retractable wheel extends below the track or an inactive position at which said retractable wheel is substantially within the interior volume of the base, wherein the elongated track permits said retractable wheel to move to a desired position between the first end and the second end of the track when the retractable wheel is in an inactive position.

A shock absorbing caster system includes an inner-bearing, a flexible-hub, and outer-rim, and a cylindrical disc. The inner-bearing is configured as a roller-bearing and fixed to the flexible-hub. The inner-bearing is further surrounded by the outer-rim. The inner-bearing is fixed to the flexible-hub and to the outer-rim by a bonding process. The cylindrical disc is configured as a tire and further circumferentially affixed to the other-rim. The shock absorbing caster is useful for providing a caster wheel having a flexible hub with shock absorbing properties for use with luggage and other suitable applications.

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.

A smart self-driving system includes a body, such as a piece of luggage, supported by a plurality of wheel assemblies. At least one wheel assemblies includes a wheel rotating motor configured to rotate a wheel of the wheel assembly to move the luggage in a given direction. At least one wheel assemblies includes a wheel orientation sensor configured to measure the orientation of the wheel. At least one wheel assembly includes a wheel orientation motor configured to orient the wheel in the given direction. The smart self-driving system is configured to move in forward direction that is different than a head direction of the body.

A smart self-driving system includes a body, such as a piece of luggage, supported by a plurality of wheel assemblies. At least one wheel assemblies includes a wheel rotating motor configured to rotate a wheel of the wheel assembly to move the luggage in a given direction. At least one wheel assemblies includes a wheel orientation sensor configured to measure the orientation of the wheel. At least one wheel assembly includes a wheel orientation motor configured to orient the wheel in the given direction. The smart self-driving system is configured to move in forward direction that is different than a head direction of the body.

A movable container includes: a driving mechanism, a sensing device, and a control circuit. The driving mechanism is arranged to provide a momentum to the movable container. The sensing device is arranged to sense a motion feature in accordance with the momentum provided by the driving mechanism. The control circuit is coupled to the sensing device and the driving mechanism and arranged to calculate a calculated mass of the movable container in accordance with the motion feature sensed by the sensing device. The control circuit is coordinated with the driving mechanism and the sensing device via a user input.

Provided is a luggage piece that can be coupled to a second luggage piece to be transported together as a joined unit, and a luggage system including such luggage pieces. The luggage piece includes a housing for storing items to be transported therein, and a retractable handle provided to the housing. A plurality of rollers coupled to the housing allow the luggage piece to be rolled, and include at least two in-line rollers having a generally-fixed rolling direction. The second luggage piece includes two or more adjustable rollers having a variable rolling direction. A plurality of tethers couple the luggage piece and the second luggage piece together to form a joined unit that can be steered through adjustment of the rolling direction of the adjustable rollers.