A rolling knee support device is attached to each knee of the user for support thereof when the user is in a kneeling position. The device has four swivel caster type wheels with a threaded stem for being releasably mounted into one of eight holes defined in a double-curved lower surface of a base of the support. The four wheels can be moved and arranged such on the double-curved lower surface so that the supporting feature of the knee supporting device can be modified and customized according to the needs of the worker and/or the particular job whereby the worker is supported in the most comfortable, balanced, and efficient position and orientation for any particular job. Straps with fasteners are used to secure each rolling knee support device to each knee of the user.

A skateboard includes a board adapted for a user to stand with both feet thereon and having a major axis, and a front steering device and a rear steering device respectively disposed on front and rear sections of a bottom surface of the board along the major axis and each having two wheels. The front or rear steering device has a wheel seat disposed on the bottom surface of the board rotatably around a rotation axis which inclines downwards from front to rear, and a wheel rack disposed on the wheel seat rotatably or swingably around a main axis. An abutted surface is defined where the wheel seat and the wheel rack are abutted against each other. On an imaginary vertical plane including the major axis, where the rotation axis passes the abutted surface is in front of where the main axis passes the abutted surface.

A personal transportation vehicle comprises a carrier, a control device, and a first and second pair of wheels. The first pair of wheels are fixed in a direction and the second pair of wheels are mounted on swivels below the carrier. The first and the second pair of wheels are arranged aligned and parallel to each other below the carrier. A first controller drives the first wheel and a second controller drives the second wheel of the first pair of wheels. The control device transmits signals to the first controller and the second controller to control the first driving device and the second driving device. The second pair of wheels are swiveled and driven by a difference between the rotational speeds of the first wheel and the second wheel of the first pair of wheels to determine a movement direction of the transportation vehicle.

A swing roller skate with a novel manufacturing process includes: an aluminum insert, a panel, an anti-wear bar, a lower bearing, an upper bearing, an insert plastic wheel fork, a PU wheel and an insert cap, wherein: the aluminum insert is injection-molded into the panel; a front portion of the panel forms a pole, a front end forms a cylinder, a rear portion forms a flat cylinder, a rear end forms a cylinder, and a middle forms a circular sheet; top side holes and bottom side holes are drilled at the front end and the rear end of the panel, and through holes are provided between the top side holes and the bottom side holes; two oval holes are drilled at a circular bottom face of the plane, the anti-wear bar is provided at two sides of a bottom face of the middle portion of the plane.

Disclosed is a folding car for children. The folding car comprises a rear frame, rear frame is connected with a seat; a front frame connected to the rear frame in a back-and-forth movable manner; a front lateral rod, a front portion of which is rotatably connected with the front frame; a rear lateral rod rotatably connected to the front lateral rod and the rear frame; a pedal rod rotatably connected to the front frame; and a connecting rod connected with the rear frame in a back-and-forth movable manner, and a front portion of the connecting rod being connected with the pedal rods in a slidable and rotatable manner. The folding car for children realizes the folding of a seat-type scooter for children, has a simple and new overall structure, is convenient to fold and has a small volume after being folded.

A wearable mobility device is provided. The wearable mobility device may include a base configured to support a rear portion of a shoe or foot, wherein a front portion of the shoe is free to touch a surface, and wherein the base enables a wearer of the shoe to walk upon the surface when the device is worn by the wearer; two side wheels disposed on opposite sides of the base; a rear wheel disposed at the rear of the base; wherein the wheels enable the wearer to roll upon the surface; and a motor mechanically coupled to at least one of the wheels.

A swing roller skate with a novel manufacturing process includes: an aluminum insert, a panel, an anti-wear bar, a lower bearing, an upper bearing, an insert plastic wheel fork, a PU wheel and an insert cap, wherein: the aluminum insert is injection-molded into the panel; a front portion of the panel forms a pole, a front end forms a cylinder, a rear portion forms a flat cylinder, a rear end forms a cylinder, and a middle forms a circular sheet; top side holes and bottom side holes are drilled at the front end and the rear end of the panel, and through holes are provided between the top side holes and the bottom side holes; two oval holes are drilled at a circular bottom face of the plane, the anti-wear bar is provided at two sides of a bottom face of the middle portion of the plane.

Various powered personal mobility vehicles are disclosed. In some embodiments, the vehicle can include a deck having a forward portion, a rearward portion, and a neck portion. A front swivel wheel assembly and a rear swivel wheel assembly can be connected with the deck. In some embodiments, the front swivel wheel assembly comprises a motor.

A wearable mobility device comprising a base for the placement of a shoe, the base including a heel-support section, a battery pack, a tail reflector, and a wireless receiver. The device including a first wheel having a wheel hub motor embedded therein, the motor rotatably connected to a first partial axial shaft connected to the base. The device including a second wheel having a wheel hub motor controller embedded therein, the motor controller rotatably connected to a second partial axial shaft connected to the base and operative to control a speed of rotation of the first wheel and the second wheel. The device also including a remote control for controlling the speed of rotation of the first wheel and the second wheel, the remote control operative to transmit one or more control signals to the wireless receiver, the wireless receiver being electrically coupled to the motor controller.

A bifurcated truck in a laterally-sliding board wheel assembly enables the freeboard to seamlessly transition from carvingas associated with a traditional skateboardto new omnidirectional motions, in which the board can easy travel forward, backwards, sideways or in any other directional combination. The wheel assembly of this invention employs a bifurcated truck system having two independent suspension arms, both operating independently from one another and from the board's castering wheels. The wheel assemblies are mirrored at each longitudinal end of the board, resulting in the board's ability to carve, slide or skidand easily transition back and forth among each of these modesproviding the rider a sense of stability and freedom commonly associated only with snowboarding.