Wheel assembly, in particular for a wheel chair comprising. The wheel assembly includes a wheel shaft extending along a shaft axis and which is configured to be non-rotatably connectable to a frame of the wheelchair. A wheel with a wheel hub is mounted on the wheel shaft so as to be rotatable around the shaft axis. The wheel assembly is provided with a hub motor having a power input and with a rim handle connected to the wheel and being rotatable relative to the wheel over an angle. A resolver assembly of the wheel assembly comprises a wheel resolver which is configured to generate a wheel resolver signal, a rim handle resolver which is configured to generate a rim handle resolver signal, and at least one resolver assembly output for outputting the wheel resolver signal and the rim handle resolver signal.

A personal mobility device includes a frame, a plurality of wheels attached to the frame and one or more pneumatic motors. Each of the one or more pneumatic motors has a drive shaft in operative connection with at least one of the plurality of wheels. The personal mobility device further includes at least one tank (that is, a storage container) for storage of a pressurized gas in operative connection with the one or more pneumatic motors to supply pressurized gas to the one or more pneumatic motors and a control system in operative connection with the at least one tank and with the one or more pneumatic motors.

An advanced manually propelled wheelchair (100) is described. The wheelchair (100) has a chassis (110). In certain examples this may be a single piece design. The wheelchair (100) may further have one or more of a load adjustment mechanism (150) and a power-assist mechanism. The load adjustment mechanism (150) is configured to adjust a position of a set of rear wheels (120) for the wheelchair (100) relative to a loading of the wheelchair (100). Load adjustment may be performed based on a sensed loading. The power-assist mechanism provides a powered torque to a set of front wheels (130) to help a user propel the wheelchair (100) or to stabilise the wheelchair (100) during use. The power-assist mechanism may be provided as a set of modular front wheel units.

A conveyance to carry humans, such as a wheelchair, is described having levers on each side of the wheelchair that are manually moved forward and backward to propel the conveyance. The user is able to shift into forward, reverse or neutral, brake, and change mechanical advantage (gear ratio), all this without removing the user's hands from the drive levers.

A conveyance to carry humans, such as a wheelchair, is described having levers on each side of the wheelchair that are manually moved forward and backward to propel the conveyance. The user is able to shift into forward, reverse or neutral, brake, and change mechanical advantage (gear ratio), all this without removing the user's hands from the drive levers.

An electrical power assistance device designed to be removably coupled to existing transport wheelchairs to provide electric power to aid in transportation of a person sitting in the wheelchair, while being detachable to allow the transport chair to fold up for easy storage in a car or other vehicle. The electrical power assistance device includes a motor powered by a rechargeable battery, where the motor drives an internal shaft which rotates a pair of friction wheels. A clutch, provided on a separate axle coupled to the friction wheels by eccentric disks, allows the friction wheels to engage or disengage with the rear wheels of the transport wheelchair.

A intelligent rollator has a vehicle body, a seat provided in the vehicle body for a person to sit or place items on, and front and rear wheels provided at the bottom of the wheels, driven by motors. A power-assist control method includes the following steps: obtaining the load weight of the vehicle body; and entering a first power-assist compensation mode to compensate the torque output of the motor according to a first power-assist compensation threshold, when the load weight is greater than a set threshold. The first power-assist compensation threshold is direct proportional to at least one of the following parameters: the load weight of the intelligent rollator, and the moving speed of the intelligent rollator. The intelligent rollator can be used safely even under the situations of huge different loads, as with load or not the motor torque output is prevented from being too large to drag the user to fall down, or when the user is seated the motor torque output is prevented from being too small and power is insufficient.

An electrical power assistance device designed to be removably coupled to existing transport wheelchairs to provide electric power to aid in transportation of a person sitting in the wheelchair, while being detachable to allow the transport chair to fold up for easy storage in a car or other vehicle. The electrical power assistance device includes a motor powered by a rechargeable battery, where the motor drives an internal shaft which rotates a pair of friction wheels. A clutch, provided on a separate axle coupled to the friction wheels by eccentric disks, allows the friction wheels to engage or disengage with the rear wheels of the transport wheelchair.

A powered balancing mobility device that can provide the user the ability to safely navigate expected environments of daily living including the ability to maneuver in confined spaces and to climb curbs, stairs, and other obstacles, and to travel safely and comfortably in vehicles. The mobility device can provide elevated, balanced travel.

The present disclosure describes a system for providing an assistive driving force to a wheelchair. The system comprises a power assist system which includes a motion sensing system that is configured to detect the motion of the power assist system, and hence of the wheelchair, and a power assist drive system that is configured to provide an assistive drive force. The system also comprises a sensor, such as may be embedded in a wearable wristband, that is configured to detect the motion of a user's hand and that is in communication with the power assist system. The system may be configured to determine whether the wheelchair is being manually pushed based at least in part on the user motion, and to activate an assistive drive force in response to a manual push. The system may also be configured to determine whether the wheelchair is being manually braked based at least in part on the user motion, and to deactivate an assistive drive force in response to a manual brake.