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.

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.

A releasable wheel assembly is presented. The releasable wheel assembly includes a base plate and a bracket coupled to the base plate. The bracket includes multiple bosses and each boss includes a hole. An axle passing through the hole of each boss. The axle includes a circumferential groove adjacent to each end of the axle. Additionally, a brace is coupled to the base plate and the axle.

A device comprising a plurality of hollow units (11), each unit comprising a circumferential wall (12) having a first end region (5) and a second end region (13), wherein the first end region is narrower than the second end region and the plurality of units are in an interconnected arrangement, such that the first end region of a first unit (14) of the plurality of units is received within the second end region of a second unit (15) of the plurality of units, and a flexible elongate member (3) extends longitudinally through the interconnected units, whereby the circumferential walls of the interconnected first and second units abut each other and the interconnected units are secured together.

The present invention discloses a resistance force control structure of driven pulley device, which is pivot mounted on a wheel of a driven pulley device, and primarily uses damping oil or a magnetic force to achieve a resistance effect. The magnetic force portion can also be added to a gear structure to present another configuration of a resistance force control structure to achieve change in magnetic force to increase the stabilizing effect of a wheeled frame. Moreover, an adjustable mechanism enables the user to control changes in the height of the damping oil level or magnetic force strength to control the rotational speed of a wheel.

An embodiment is developed for a cylindrically shaped, elliptical rolling robot that has the ability to morph its outer surface as it rolls. The morphing actuation alters lengths of the major and minor axes, resulting in a torque imbalance that rolls the robot along faster or brakes its motion. A control scheme is implemented, whereby angular position and horizontal velocity are used as feedback to trigger and define morphing actuation. A goal of the control scheme is to cause the robot to follow a given velocity profile comprised of steps and ramps. Equations of motion for the rolling robot are formulated, which include rolling resistance torque caused by deformation of the outer surface tread. A computer program solves the equations of motion, and resulting plots show that by automatically morphing its shape in a periodic fashion, the rolling robot is able to commence from an initial position, achieve constant average velocity and slow itself.

A wheel includes a primary ring having a stepped core part and a tire formed of a urethane material as an outer surface thereof, and an auxiliary ring provided on a circumferentially-central portion of the primary ring, on which the tire is provided, in an insertion manner. The primary ring is formed of a plastic material, and the auxiliary ring is formed of a metallic material that is different from the material of the primary ring.

A swing type wheel locking device includes a wheel axle and a pivoting part. A wheel body has an outer wheel face and an axle hole fitted on the periphery of the wheel axle at a position close to the axle end part. A plurality of positioning concave parts are arrayed in a circle on the outer wheel surface. A swing type wheel locking component is pivoted on the wheel axle and has a pivoting end and a swing section. The pivoting end is pivoted on the pivoting part, so that the swing section can be forced to swing, and by choosing different swing angles, it can be shifted between a locked position and released position. When a clamping convex part of the swing section is at a locked position, it is locked right inside the corresponding positioning concave part. Thus, the wheel body is locked against rotation.

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 hybrid wheel including a functional rim, a center disc, and a wheel face insert, wherein the wheel rim and the center disc are made of a specified material, and wherein the wheel face insert is made of a dissimilar material. The wheel face insert can be secured to the center disc by at least one of screws, pins, rivets, or structural adhesive, and/or the wheel face insert can be secured to the functional rim by at least one of screws, pins, rivets, or structural adhesive.