Embodiments of the present disclosure are directed to a cart frame and modular, motorized cart. In some examples, the cart frame may comprise a wheel assembly, handles, and a kickstand. A modular article (e.g., litter, stretcher, game basket, etc.) may be attached to the top portion of the cart frame via at least one fastener (e.g., buttons, snaps, hooks, buckles, quick-detach mounts, etc.). The handles may be foldable and extendable. The kickstands may also be foldable and extendable. The handles, in some embodiments, may serve a dual purpose by folding to a certain length to function as a kickstand. In other examples, the cart may comprise an engine that may be gas-powered or electric. A battery may be affixed to the cart frame that powers the electric engine. Other objects may also be attached to the cart frame and/or modular article, such as a winch, tow bar, light, bumper, etc.

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 utility handcart includes a container body, a coupling tube, a handle arm, a collapsing wheel support, an axle, and wheels. The container body is defined by a base panel and sidewalls, The coupling tube is coupled to a bottom of the base panel and includes a hitch receiver on each end of the coupling tube. A first hitch receiver is accessible at a front of the container body, and a second hitch receiver is accessible at a rear of the container body. The handle arm is engaged within a corresponding handle arm passage disposed along one of the sidewalls of the container. The collapsing wheel support is coupled to the container body. The axle is coupled to the collapsing wheel support. The wheels are attached to the collapsing wheel support via the axle.

To provide a moving apparatus including cylindrical rotating bodies each having a surface section that functions as a driving wheel or a working member. A moving apparatus includes three or more cylindrical rotating bodies, and a plurality of coupling members, each of which couples two of the cylindrical rotating bodies together such that an angle between the cylindrical rotating bodies is smaller than 180°, where each of the three or more cylindrical rotating bodies includes a motor, and an exterior body configured to be rotated by the motor, where the three or more cylindrical rotating bodies are configured to form a closed polygonal shape to hold an elongated member R including a rope, whereby the moving apparatus is movable along the elongated member.

A method of operating a payload-carrying vehicle having two laterally disposed wheels positioned along a central axis is described. The method includes measuring a force applied by a user to the hand truck, where the measured force comprising a direction and a magnitude, and providing torque to each wheel to cause each wheel to rotate in a respective direction as a function of the measured magnitude and direction. The amount of torque provided to each wheel in response to the force from the user is such that the magnitude of measured force applied by the user is not greater than a predetermined threshold value.

To provide a moving apparatus including cylindrical rotating bodies each having a surface section that functions as a driving wheel or a working member. A moving apparatus includes three or more cylindrical rotating bodies, and a plurality of coupling members, each of which couples two of the cylindrical rotating bodies together such that an angle between the cylindrical rotating bodies is smaller than 180, where each of the three or more cylindrical rotating bodies includes a motor, and an exterior body configured to be rotated by the motor, where the three or more cylindrical rotating bodies are configured to form a closed polygonal shape to hold an elongated member R including a rope, whereby the moving apparatus is movable along the elongated member.

A galley cart compartment is disclosed. In embodiments, the galley cart compartment includes an interior compartment or space having left and right sidewalls and a cabin floor. The interior compartment can receive and securely store a galley cart (e.g., trolley) insertable into, and removable from, the interior compartment along an axis of entry (e.g., parallel to the depth of the interior compartment). The galley cart has left and right sides and an underside to which casters are pivotably or rotatably attached, each caster has left and right wheels separated by a wheel gap. Tracks extend along the cabin floor parallel to the axis of entry, a left and right track positioned to engage respectively with the left-side and right-side casters. Each track includes a guide rail that projects into the wheel gap, preventing the caster wheels from rotating when the galley cart is removed from the interior compartment.

A dolly for transporting products thereon, the dolly comprising a top with a product support surface and an opposing underside, a plurality of casters provided on the underside, two of the casters being swivel casters configured to rotate relative to the product support surface; biasing means configured to bias a wheel of each swivel caster towards a first equilibrium position. A plurality of reinforcing ribs provided on the underside; wherein at least one of the reinforcing ribs is a curved reinforcing rib, and; the at least one curved reinforcing rib extends from a first caster mounting area to a second caster mounting area. Further including, a dolly carrier pallet comprising a pallet provided with a dolly receiving layer, wherein the dolly receiving layer is provided with generally rectangular wheel receiving recesses for receiving swivel casters and is provided with generally rectangular wheel receiving recesses for receiving fixed casters.