Disclosed are an optical rotating wheel and a self-balancing vehicle. The optical rotating wheel of the present application includes a stationary component, a moving component, a light source connected with the stationary component, and a laser plate connected with the moving component, in which the stationary component is fixedly connected with the vehicle body and relatively static with respect to the vehicle body, while the moving component is rotationally connected with the stationary component. Moreover, the laser plate is provided with a laser dot which displays a preset pattern under an illumination of the light source, and when the moving component rotates, the preset pattern rotates around the light source. In such a way, a dynamic optical pattern is obtained in the optical rotating wheel and self-balancing vehicle.

A motorized vehicle assembly includes an axle comprising a channel extending along a central axis of the axle, a socket positioned within the channel of the axle, and a motorized wheel configured to be mounted on an end the axle. The motorized wheel includes a boss configured to engage the end of the axle when the motorized wheel is mounted on the axle, an electric motor, a tire mounted on the rotor, and a plug positioned within the boss, the plug configured to engage with the socket when the motorized wheel is mounted on the axle. The electric motor includes a stator fixed to the boss and a rotor surrounding the stator, the rotor configured to rotate relative to the stator. The electric motor is configured to cause the rotor to rotate relative to the stator to cause the tire to rotate.

A system for lighting a volleyball court has four corner light assemblies, two side center light assemblies, and four mid-court light assemblies. Each corner light assembly has an upper light fixture adapted to emit light outward and downward at a level generally below a player's eye level and a lower light element mounted in a manner to emit light outwards and upwards. Each side center light assembly has two lower light fixtures adapted to emit light outward and downward at a level generally below a player's eye level and an upper light assembly adapted to emit light outwards and upwards at a level generally above a player's eye level. Each mid-court light assembly has a light fixture adapted to emit light outward and downward at a level generally below a player's eye level. By ensuring that no light is emitted at a player's eye level, glare is significantly reduced.

An aluminum or aluminum alloy wheel hub having at least one display opening for electrically operated display device and at least one interior channel anodized to a sufficient electrically insulative thickness, the channel is dimensioned to receive at least one electrically conductive element of a compact generator. The display device can be a LED device. The wheel hub is especially suited for roller skate, in-line skate, and skate board wheels.

A system for lighting a volleyball court has four corner light assemblies, two side center light assemblies, and four mid-court light assemblies. Each corner light assembly has an upper light fixture adapted to emit light outward and downward at a level generally below a player's eye level and a lower light element mounted in a manner to emit light outwards and upwards. Each side center light assembly has two lower light fixtures adapted to emit light outward and downward at a level generally below a player's eye level and an upper light assembly adapted to emit light outwards and upwards at a level generally above a player's eye level. Each mid-court light assembly has a light fixture adapted to emit light outward and downward at a level generally below a player's eye level. By ensuring that no light is emitted at a player's eye level, glare is significantly reduced.

A personal transport system is provided including, in an embodiment, an electrically powered vehicle, a companion remote control, and a companion mobile phone application. The vehicle includes an operator-supporting deck, one or more deck-mounted trucks, one or more axle-mounted wheels on each of the one or more trucks, one or more batteries, and a deck lighting system. The one or more batteries power a motor configured to drive the wheels by way of a pulley system, at least one battery of which is disposed under a battery enclosure. The battery enclosure has a first light indicator system, and the companion remote control has a second light indicator system, each of which is configured for communicating with the operator. The deck lighting system includes a light strip of light-emitting diodes disposed in a groove of the deck configured to change state to communicate with the operator or others sharing a road.

Methods and apparatus are discussed for an electric-powered personal transportation vehicle with a composite board to support a weight of a user, one or more wheels driven by one or more electric motors, where the electric motors are powered by one or more batteries. The composite board includes a heterogeneous mix of individual components making up the composite board. The composite board includes i) a spine of the composite board made of a hardwood material connected to ii) sides of the composite board made of a vibration-dampening, high-density, foam.

Methods and apparatus are discussed for an electric powered personal transportation vehicle with electric motors powered by one or more batteries. A battery pack storage enclosure i) contains a set of pocket cores. The first battery pack storage enclosure has a rigid internal structure that has a set of pocket cores that hold the battery cells in place and ii) contains a metal mid-plate that functionally transfers thermal heat rapidly through a metal mass of the metal mid-plate to smooth out spikes of local temperatures when an initial battery cell overheats and fails in order to minimize the heat from the initial battery cell failure from propagating and causing a neighboring battery cell to also fail from the heat.

Embodiments of the present disclosure include a wireless remote control or remote control application for controlling the lighting of an electronic personal transportation vehicle. Embodiments can solve problems related to sharing electronic personal transportation vehicles by uniquely identifying a user, and allowing that user to control the lighting of the electronic personal transportation vehicle. In this manner, other users can control the lighting at different times, depending on the specific person that is using the electronic personal transportation vehicle at any given time.

A system for lighting a volleyball court has four corner light assemblies, two side center light assemblies, and four mid-court light assemblies. Each corner light assembly has an upper light fixture adapted to emit light outward and downward at a level generally below a player's eye level and a lower light element mounted in a manner to emit light outwards and upwards. Each side center light assembly has two lower light fixtures adapted to emit light outward and downward at a level generally below a player's eye level and an upper light assembly adapted to emit light outwards and upwards at a level generally above a player's eye level. Each mid-court light assembly has a light fixture adapted to emit light outward and downward at a level generally below a player's eye level. By ensuring that no light is emitted at a player's eye level, glare is significantly reduced.