A self-stabilizing, one-wheeled electric skateboard may include improved features. In some examples, the vehicle includes a status indicator viewable through a slot formed in an upper surface of the board. In some examples, the vehicle includes a convertible carrying handle transitionable between stowed and deployed positions. In some examples, the vehicle includes an interchangeable fender and fender substitute that may be removably coupled to an upper surface of the board. In some examples, a motor controller of the vehicle may operate a field-oriented control (FOC) scheme configured to control the electric motor by manipulating a direct current aligned with a rotating rotor flux angle and a quadrature current defined at ninety degrees from the rotating rotor flux angle. In some examples, the motor controller may be configured to permit intuitive dismounting of the vehicle by tilting and/or moving the vehicle backward.

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.

A skateboard having laterally disposed wheels along a diagonal board is disclosed. The board has a generally hour-glass shape, but may include extra clearance for either left or right foot mounting, and pushing off. The board may be equipped with a center handle for gripping in use and for carrying. The wheel trucks may include multiple trucks mounted at each end and offset one from the other at that location. The board may also include a stability and/or steering handle at one end, and caster type wheel trucks for added versatility. Owing to the lateral disposition of foot pads and wheels, a rapid natural gait dismount is made possible.

A system for providing player training including a grid of individually powered, processor controlled and communicable lighting elements and sensors which are embedded within a playing surface associated with the event, the lighting elements interfacing with at least one of a player worn sensor and/or a remote processor device for providing a visual illustration of any number of parameters associated with an actual player performance, including real time motion progressions of the player which are represented on the field surface and/or recreated on a processor driven screen which films or otherwise tracks the event. The simulated progressions can further replicate the desired motions of the positional player's intended motions or those of an opposing positional player and in lieu of the actual player being on the playing surface.

Systems and methods for intelligent data center power management and energy market disaster recovery comprised of data collection layer, analytics/automation/actions layer, energy markets analysis layer. Plurality of data centers employ the systems and methods comprised of a plurality of Tier 2 data centers that may be running applications, virtual machines and physical computer systems to enable data center and application disaster recovery from utility energy market outages. Systems and methods may be employed to enable application load balancing and data center power load balancing across a plurality of data centers may lead to financial benefits when moving application and power loads from one data center location using power during peak energy hours to another data center location using power during off-peak hours.

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.

When an electric vehicle is traveling downhill, experiencing regenerative braking, or otherwise forcing the vehicle motor to turn faster than the commanded motor torque, the vehicle motor produces electrical energy that can be used to recharge a vehicle battery. However, if the vehicle battery is already nearly or fully charged, the excess electrical energy produced may damage the battery. Control systems described herein may reduce and/or dispose of the excess energy by manipulating the motor flux (i.e., direct) current and quadrature current independently.

A temporary or permanent safe line projection system comprises a stationary or movable structure that is dimensioned and arranged to be supported by and project upwardly from an athletic field surface (or other surfaces needing delineation). A laser source is supported by the movable or stationary structure and is maintained by the movable or stationary structure at an elevated location relative to the athletic field surface (or other surface needing delineation). This allows the laser source to direct safe optical energy downward upon the field while the movable or stationary structure is maintained substantially in a first orientation relative to the athletic field surface (or other surfaces desiring delineation). A sensing arrangement is operative to to disable the laser source or modulate its output depending upon proximity of users to the system or its output and upon ambient lighting conditions, as the case may be.

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 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.