A folding dolly system, a base unit of a folding dolly system, and methods of forming and using a folding dolly system are presented. A folding dolly system comprises a plurality of interconnectable base units connected to form a substantially planar holding surface, each base unit comprising a first edge with a number of knuckles configured to form a joint, a second edge with a number of knuckles configured to form a joint, and a surface forming a portion of the holding surface.

A pulling cart with four wheels can be folded into a folded configuration. The wheels are mounted on wheel assemblies which can be in an open or a folded position. The cart has a front panel hinged to a rear panel. The front panel has a front carrier for mounting two wheel assemblies and a pair of slide rails extendable to the second panel. A rear carrier having two wheel assemblies is fixedly mounted to the end portion of the slide rails to move between the front and rear panels. When the cart is used for pulling, all wheel assemblies are in the open position. Each carrier has two arm-receiving holes. Each wheel assembly has a pair of arcuate arms which can rest on the carrier to support the wheel in the open position or move through the arm-receiving hole into the folded position for folding the cart.

The luggage with extendable dolly is a luggage item. The luggage with extendable dolly comprises a suitcase with rolling telescopic platform. The luggage with extendable dolly forms a cart used to transport additional luggage items. The rolling telescopic platform is collapsible such that the suitcase can store the rolling telescopic platform within the exterior surfaces of the suitcase.

Compressible carts and methods for using the same are provided. The compressible carts include a rigid frame having a front wall, a rear wall, a right sidewall, a left sidewall, and a bottom wall. The right sidewall comprising a first right panel rotatably coupled to a second right panel. The compressible carts may also include a first lock assembly integrated with the first right panel and the second right panel. The first lock assembly having a first condition for locking the first right panel to the second right panel, and a second condition for unlocking the first right panel from the second right panel.

The present application discloses a foldable trolley having a trolley frame, the trolley frame comprising: a front left strut assembly, a front right strut assembly, a rear left strut assembly, and a rear right strut assembly, each of which strut assemblies is provided with a top connector and a bottom connector movable axially relative to each other; a front end folding assembly configured to be coupled respectively to the top connectors and the bottom connectors of the front left strut assembly and the front right strut assembly and to be foldable in a widthwise direction of the trolley frame; a rear end folding assembly; a left side folding assembly; a right side folding assembly; and a chassis assembly configured to be foldable both in the widthwise and lengthwise directions of the trolley frame.

The present invention provides a foldable baby carriage frame comprising a handle assembly, a front leg assembly, a front leg support assembly, a rear leg assembly, a rear foot connecting assembly, a horizontal support rod and a torsion spring. The torsion spring is provided at the connection between the front leg support assembly and the rear leg connection assembly, and the torsion spring controls the opening and closing of the front leg support assembly and the rear leg connection assembly by the rotation. When downward force is applied to the rear leg assembly, the rear leg assembly pivots downward with the torsion spring as the pivot point, so that the front leg support assembly and the rear leg connecting assembly realizes the effect of automatic folding. After the downward force is released, the front leg support assembly and the rear leg connecting assembly return to the state when the baby carriage is in use.

Compressible carts and methods for using the same are provided. The compressible carts include a rigid frame having a front wall, a rear wall, a right sidewall, a left sidewall, a bottom wall, a rotatable base panel, a rigid cover panel, a handle, and a plurality of wheel assemblies. The compressible carts may also include on each sidewall one or more fastening mechanisms, such as slideable members cooperatively engaging tracks or fastening connectors, and are movable between an open position to allow the sidewall to fold inwardly, to a closed position to selectively lock the panels of the sidewall. The plurality of wheel assemblies may include a plurality of rotatable swivel wheels mounted underneath the bottom wall, or a plurality of wheels rotatably coupled to a plurality of spokes, where each spoke is coupled to a revolving spindle.

A pulling cart with four wheels can be folded into a folded configuration. The wheels are mounted on wheel assemblies which can be in an open or a folded position. The cart has a front panel hinged to a rear panel. The front panel has a front carrier for mounting two wheel assemblies and a pair of slide rails extendable to the second panel. A rear carrier having two wheel assemblies is fixedly mounted to the end portion of the slide rails to move between the front and rear panels. When the cart is used for pulling, all wheel assemblies are in the open position. Each carrier has two arm-receiving holes. Each wheel assembly has a pair of arcuate arms which can rest on the carrier to support the wheel in the open position or move through the arm-receiving hole into the folded position for folding the cart.

A tactical transport cart manually navigable over both topographic and hydrographic terrains has a frame, a payload support on the frame, a hard point of attachment or connection on the frame or the payload support, a pair of wheels or other terrain-engaging transport propulsion members attached to the frame, a handle structure attached to the frame, at least one motor connected in driving relation to the transport propulsion members, a battery for providing motive power to the motor, and a control device connected between the battery and the motor for controlling supply of motive power to the motor. The frame, transport propulsion members and handle structure are cooperatively dimensioned and configured for movement of the cart over ground surfaces of topographic terrains and for partially and fully submerged movement over water-covered surfaces of hydrographic terrains.

A foldable stroller frame and a foldable stroller are provided. The foldable stroller frame may include, a front wheel bracket, and a rear wheel bracket rotatably connected to the front wheel bracket. An upper end of the rear wheel bracket is rotatably connected to a side handrail, and a rear end thereof is rotatably connected to a rear supporting bar. The side handrail and the rear supporting bar are rotatably connected to a push bar from different shafts. The rear wheel bracket is provided with a slidable sleeve to which a front wheel bracket link and a side handrail link are rotatably connected, respectively. An end of the front wheel bracket link that is not connected to the slidable sleeve is rotatably connected to the front wheel bracket, and an end of the side handrail link that is not connected to the slidable sleeve is rotatably connected to the side handrail.