A self-propelled warning device used for road safety includes a bracket, a warning sign mounted to an upper side of the bracket, and at least one driving mechanism. The driving mechanism includes a supporting leg, a driving unit, and a wheel. The supporting leg includes a receiving portion, the receiving portion defines an accommodating space. The driving unit is accommodated in the accommodating space. The wheel is mounted on the receiving portion and is drivingly connected to the driving unit. The wheel is driven by friction of the driving unit. The driving mechanism is also disclosed.

A walking mud handling system may include a walking mud tank and a plurality of hydraulic walkers coupled to the walking mud tank. Each hydraulic walker may include a walking foot, a hydraulic lift, and a sliding actuator. The hydraulic lift may include a hydraulic cylinder coupled to the walking foot such that extension of the hydraulic cylinder extends the walking foot into contact with the ground. The sliding actuator may include one or more hydraulic cylinders coupled to the walking foot such that extension of the sliding actuator moves the walking foot laterally relative to the hydraulic lift.

A walking mud handling system may include a walking mud tank and a plurality of hydraulic walkers coupled to the walking mud tank. Each hydraulic walker may include a walking foot, a hydraulic lift, and a sliding actuator. The hydraulic lift may include a hydraulic cylinder coupled to the walking foot such that extension of the hydraulic cylinder extends the walking foot into contact with the ground. The sliding actuator may include one or more hydraulic cylinders coupled to the walking foot such that extension of the sliding actuator moves the walking foot laterally relative to the hydraulic lift.

Disclosed is a configurable workstation for coupling to a utility vehicle. The workstation allows for fast, simple, and secure mounting to the utility vehicle by way of a conforming surface engaging with the utility vehicle's rear platform or bagwell. The workstation is configurable in a number of customized forms depending on the use requirements of the utility vehicle and workstation and may include drawers, an interchangeable work surface with or without a backsplash, cabinets, or bins in many different combinations. Examples of the interchangeable work surface include a countertop, a wooden or metal workbench, and other removable and exchangeable work surfaces according to the application desired.

Disclosed is a configurable workstation for coupling to a utility vehicle. The workstation allows for fast, simple, and secure mounting to the utility vehicle by way of a conforming surface engaging with the utility vehicle's rear platform or bagwell. The workstation is configurable in a number of customized forms depending on the use requirements of the utility vehicle and workstation and may include drawers, an interchangeable work surface with or without a backsplash, cabinets, or bins in many different combinations. Examples of the interchangeable work surface include a countertop, a wooden or metal workbench, and other removable and exchangeable work surfaces according to the application desired.

Drifting karts in accordance with embodiments of the invention are described that include a front wheel drive train and rear caster wheels that can be dynamically engaged to induce and control drift during a turn. One embodiment of the invention includes a chassis to which a steering column is mounted, where the steering column includes at least one front steerable wheel configured to be driven by an electric motor, a battery housing mounted to the chassis, where the battery housing contains a controller and at least one battery, wiring configured to provide power from the at least one battery to the electric motor, two caster wheels mounted to the chassis, where each caster wheel is configured to rotate around a rotational axis and swivel around a swivel axis, and a hand lever configured to dynamically engage the caster wheels to induce and control drift during a turn.

Drifting karts in accordance with embodiments of the invention are described that include a front wheel drive train and rear caster wheels that can be dynamically engaged to induce and control drift during a turn. One embodiment of the invention includes a chassis to which a steering column is mounted, where the steering column includes at least one front steerable wheel configured to be driven by an electric motor, a battery housing mounted to the chassis, where the battery housing contains a controller and at least one battery, wiring configured to provide power from the at least one battery to the electric motor, two caster wheels mounted to the chassis, where each caster wheel is configured to rotate around a rotational axis and swivel around a swivel axis, and a hand lever configured to dynamically engage the caster wheels to induce and control drift during a turn.

The present disclosure is directed to a utility vehicle having a pivotable seat connected by a hinge to a fixed platform. The pivotable seat configured to pivot between a first position and a second position defining a standard seat location and a first wall of a cargo bay, respectively. A seatback is configured to form a second wall of a cargo bay when the pivotable seat is in the second position. First and second opposing side walls are positioned on either side of the pivotable seat. The side walls are configured to form barriers at either side of the cargo bay when the pivotable seat is in the second position.

The present disclosure is directed to a utility vehicle having a pivotable seat connected by a hinge to a fixed platform. The pivotable seat configured to pivot between a first position and a second position defining a standard seat location and a first wall of a cargo bay, respectively. A seatback is configured to form a second wall of a cargo bay when the pivotable seat is in the second position. First and second opposing side walls are positioned on either side of the pivotable seat. The side walls are configured to form barriers at either side of the cargo bay when the pivotable seat is in the second position.

An ATV is shown having a steering system comprised of a power steering unit having drive and driven pitman arms coupled to a drag link. The drive pitman arm is laterally offset from a vehicle centerline and is driven by the power steering unit. An alternate power steering system includes a pack and pinion subassembly coupled to a power steering motor, which then couples to steering arms of the ATV.