A flatbed truck with a foldable caster unit, comprising a load-bearing plate, a load-bearing support frame and a caster unit, and further comprising a caster unit rotation driving device. The caster unit rotation driving device comprises an operating handle, a connecting rod, a front linkage mechanism and a rear linkage mechanism, wherein the operating handle is pivotally connected with the load-bearing plate and is rotatable around a pivot axis of the operating handle. The operating handle is capable of linking with the front linkage mechanism and the rear linkage mechanism via the connecting rod to respectively drive the front caster unit and the rear caster unit to be rotated from the folded storage position to the unfolded rolling position, when the operating handle is rotated from a first position to a second position.

A retractable wheel assembly may include a fork that may be pivotally coupled to an object and a wheel that may be rotatably mounted on the fork. The retractable wheel assembly may further include a hollow housing that may be made up of an elongated housing portion pivotally coupled to the fork from a first end of the elongated housing portion and a curved housing portion integrally formed with an opposing second end of the elongated housing portion. The retractable wheel assembly may further include a weight disposed and moveable within the housing.

A multi-terrain cart, comprising a cart body, two front and two rear non-pivoting wheels, a swivel wheel positioned forwardly or rearwardly to the front and rear non-pivoting wheels, respectively, an actuator for applying a downward force to the swivel wheel which causes the swivel wheel to be set at an operative position and two of the non-pivoting wheels to be raised relative to an underlying ground surface, and means for setting an angle of the swivel wheel relative to a lengthwise extending centerline of the cart body to cause the cart to rotate about a center of rotation that is determined by the set angle of the swivel wheel.

The disclosure provides a wheel for an omnidirectional moving device which takes fewer man-hours for manufacturing, and a manufacturing method of the wheel for an omnidirectional moving device which takes fewer man-hours. The wheel includes an annular core body 36; a plurality of bearings 75 each including an inner ring 76 and an outer ring 77 relatively rotatable with respect to the inner ring, and the inner ring being fixed to an outer peripheral surface of the core body; and a plurality of rollers 37 each fixed to the outer ring and rotatably supported by the core body via the bearing. The inner ring is tightened and fitted to the core body.

This application describes systems, devices, computer readable media, and methods for the function and operation of robotic carts. A robotic cart may include a base component configured for the receipt of a payload, a battery unit, and a mobility apparatus. The robotic cart may include a handlebar component coupled with the base component. The handlebar unit may include a sensor unit configured to transmit a hand detection message when the handlebar unit is grasped by one or more hands and to transmit a force direction message indicating a two-dimensional direction associated with a directional force applied by one or more hands. The robotic cart may be configured to map the area around it and to autonomously move the robotic cart along a path to perform a task.

A multidirectional wheel assembly for facilitating a cart to be moved in any direction at any time. The assembly includes a cup that is coupled to a leg of a cart. A sphere is rotatably positioned in the cup and the sphere rolls along a support surface. The sphere is rotatable in a selectable direction in the cup to facilitate the cart to be urged in the selectable direction.

A mobile body that is human-powered includes three all-directional wheels with axles thereof displaced from each other by 120 degrees, a connection portion that connects two front wheels, a brake attached to a rear wheel, and a disconnection portion that disconnects the two front wheels from each other. The connection portion connects the two front wheels such that the two front wheels rotate in directions opposite to each other. The connection portion connects the front wheels with the rear wheel such that the two front wheels rotate in the same direction, while the front wheels rotate in a direction opposite to a rotational direction of the rear wheel.

A releasable wheel assembly includes a bracket having multiple bosses, each boss including a hole that receives an axle. A pair of wheels are mounted on the axle and a pair of locking caps fit over respective ends of the axle, the locking caps each including a clip for engaging the axle at a circumferential groove to prevent movement of the locking cap along the axle. The wheel assembly can be mounted to a carry bag or other storage unit by mounting the bracket to the storage unit, where the wheels and axle can be easily removed from the bracket.

A wheel assembly includes: a wheel set unit including a wheel bracket and a wheel; and a brake unit including a brake element disposed between the wheel bracket and the wheel, a threaded member sleeved movably on the brake element, and a screw extending threadably through the threaded member, extending through the brake element so as to prevent movement of the threaded member on the brake element, and pushable downwardly such that the brake unit moves downwardly to press resiliently against the wheel, so as to arrest rotation of the wheel. Only a single tool is needed to be accessed to a lower end of the screw so as to adjust a distance between the brake unit and the wheel.

A conductive caster wheel is adapted to be mounted on a cart The conductive caster wheel includes a caster hub adapted to be sleeved on a bearing of the cart, a wheel body sleeved on the caster hub, and a conductive plate disposed inside the caster hub and the wheel body. The conductive plate has an inner conductive section. and an outer conductive section. The inner conductive section is exposed from an inner surrounding surface of the caster hub, and is adapted to be electrically connected. to the bearing. The outer conductive section is electrically connected to the inner conductive section, is exposed from an outer surrounding surface of the wheel body, and is adapted to be in contact with a ground surface.