Aspects of the invention are directed to a cart that includes a structural element, a compressor assembly, and a pressure regulator. The structural element may be a tubular frame member, a handle, or a deck. The structural element defines an internal storage volume within it. The compressor assembly is able to deliver compressed air to the internal storage volume. The pressure regulator assembly is able to deliver compressed air from the internal storage volume at a regulated pressure. Advantageously, embodiments in accordance with aspects of the invention provide cart designs that are capable of both transporting heavy loads and serving as sources of compressed air. A user utilizing one of these carts therefore does not need to bother with transporting a separate air compressor to a worksite. Instead, air compressor functionality is conveniently built into the cart and the user's workload is thereby reduced.

Aspects of the invention are directed to a cart that includes a structural element, a compressor assembly, and a pressure regulator. The structural element may be a tubular frame member, a handle, or a deck. The structural element defines an internal storage volume within it. The compressor assembly is able to deliver compressed air to the internal storage volume. The pressure regulator assembly is able to deliver compressed air from the internal storage volume at a regulated pressure. Advantageously, embodiments in accordance with aspects of the invention provide cart designs that are capable of both transporting heavy loads and serving as sources of compressed air. A user utilizing one of these carts therefore does not need to bother with transporting a separate air compressor to a worksite. Instead, air compressor functionality is conveniently built into the cart and the user's workload is thereby reduced.

A beverage keg dolly (BKD) system/method providing for transportation of a beverage keg (BK) in tight quarters is disclosed. The system/method integrates a dolly frame spine (DFS), axial wheel assembly (AWA), radial wheel assembly (RWA), keg alignment handle (KAH), keg engagement hook (KEH), beverage keg cradle (BKC), and vertical rotation handle (VRH). BK transportation uses the KAH to engage/cradle the KEH to a BK within the BKC. Once cradled by the BKC, the BK is lifted off the ground and supported by the AWA via depression of the VRH. The BK axially rotates about the AWA by the VRH until the BK center of gravity transitions a vertical equipoise plane (VEP) extending from the AWA. The weight of the BK is then supported by the AWA and the RWA. Transportation and/or circular rotation of the BK may then be affected by rotation/movement of the VRH.

A beverage keg dolly (BKD) system/method providing for transportation of a beverage keg (BK) in tight quarters is disclosed. The system/method integrates a dolly frame spine (DFS), axial wheel assembly (AWA), radial wheel assembly (RWA), keg alignment handle (KAH), keg engagement hook (KEH), beverage keg cradle (BKC), and vertical rotation handle (VRH). BK transportation uses the KAH to engage/cradle the KEH to a BK within the BKC. Once cradled by the BKC, the BK is lifted off the ground and supported by the AWA via depression of the VRH. The BK axially rotates about the AWA by the VRH until the BK center of gravity transitions a vertical equipoise plane (VEP) extending from the AWA. The weight of the BK is then supported by the AWA and the RWA. Transportation and/or circular rotation of the BK may then be affected by rotation/movement of the VRH.

A wheel pack assembly includes a pack portion wearable by a user and a wheeled portion removably coupled to the pack portion. The pack portion includes a support frame coupled to a rear surface thereof. The support frame includes articulating arms and stabilizing elements. The wheel portion includes a frame and a first wheel set coupled to the frame and disposed at a location spaced apart from a rear end of the wheeled portion. The frame includes a first portion and a second portion that are joined together at a bend and such that the second portion defines a transport bed of the assembly.

A wheel pack assembly includes a pack portion wearable by a user and a wheeled portion removably coupled to the pack portion. The pack portion includes a support frame coupled to a rear surface thereof. The support frame includes articulating arms and stabilizing elements. The wheel portion includes a frame and a first wheel set coupled to the frame and disposed at a location spaced apart from a rear end of the wheeled portion. The frame includes a first portion and a second portion that are joined together at a bend and such that the second portion defines a transport bed of the assembly.

A wheel dolly for raising a vehicle wheel off the floor is disclosed. The dolly has at least two wheel straddle bars, each straddle bar having a non-swing caster assembly. A swing caster assembly is connected to each straddle bar. The assembly includes a stationary frame supporting a swing axle, a swing frame that rotates about the swing axle, and a swing caster connected to swing frame. The swing caster defines a swivel plane. A lift bar connects the two wheel straddle bars. The dolly can transition between two configurations: a lowered configuration, wherein the swivel plane is not parallel to the floor, and a raised configuration, wherein the swivel plane is substantially parallel to the floor.

A wheel dolly for raising a vehicle wheel off the floor is disclosed. The dolly has at least two wheel straddle bars, each straddle bar having a non-swing caster assembly. A swing caster assembly is connected to each straddle bar. The assembly includes a stationary frame supporting a swing axle, a swing frame that rotates about the swing axle, and a swing caster connected to swing frame. The swing caster defines a swivel plane. A lift bar connects the two wheel straddle bars. The dolly can transition between two configurations: a lowered configuration, wherein the swivel plane is not parallel to the floor, and a raised configuration, wherein the swivel plane is substantially parallel to the floor.

An auxiliary transport vehicle according to the disclosure comprises a drive unit and an attachment that is placed thereon, wherein the drive unit comprises just two wheels with a common axis of rotation and each with an electric drive, an electronic control device and an electrical energy storage device, and wherein the control device is embodied for actuating the drives in such a way that the auxiliary transport vehicle is kept in an upright position, and for autonomously driving the auxiliary transport vehicle to a specifiable destination and for following an external control device. The disclosure also concerns an auxiliary transport system and a method for operating an auxiliary transport vehicle.

An auxiliary transport vehicle according to the disclosure comprises a drive unit and an attachment that is placed thereon, wherein the drive unit comprises just two wheels with a common axis of rotation and each with an electric drive, an electronic control device and an electrical energy storage device, and wherein the control device is embodied for actuating the drives in such a way that the auxiliary transport vehicle is kept in an upright position, and for autonomously driving the auxiliary transport vehicle to a specifiable destination and for following an external control device. The disclosure also concerns an auxiliary transport system and a method for operating an auxiliary transport vehicle.