Disclosed herein is a method of controlling a motorized wheelchair, the motorized wheelchair including a seat frame supporting a seat, a back frame to which the seat frame is detachably connected, a first main wheel and a second main wheel respectively installed at both lower ends of the back frame, an inclination detecting sensor which detects an inclination, and a controller which controls the main wheel and the second main wheel, the method includes receiving an input for a turning operation, calculating an inclination angle of a running ground by the inclination detecting sensor, and determining whether the inclination angle is greater than a reference angle.

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.

Provided is a wheelchair that can be easily operated with either a right or left hand. The wheelchair according to the present invention is provided with: a right-left pair of first handrims connected to handrim spokes; a right-left pair of second handrims connected to spokes; a first rotary shaft for transmitting a first rotational force generated by rotation of the left first handrim to a right wheel; and a second rotary shaft for transmitting a second rotational force generated by rotation of the right first handrim to a left wheel, wherein a first power transmission device on a right inner shaft of a right drive mechanism meshes with a second power transmission device on the second rotary shaft, and a third power transmission device on a right outer shaft of the right drive mechanism meshes with a fourth power transmission device on the first rotary shaft.

A controller for operative connection to a power assisted transport vehicle that is at least partially directed by a human operator in physical contact with the vehicle, the controller including: a contact surface, a first sensor and a second sensor each responsive to manual actuation of the contact surface, each sensor having a respective first sensor output signal and a second sensor output signal, and a signal processing means adapted to process the first and second output signals, wherein force imparted to the contact surface in the Z-axis is adapted to provide Z-axis movement of the vehicle by processing the first sensor output signal and the second sensor output signal, and wherein force imparted to the contact surface in the X-axis is adapted to provide X-axis movement of the vehicle by processing the first sensor output signal and the second sensor output signal.

A system, method, and device for operations of an electrically motorized vehicle. The vehicle can utilize an electrically motorized wheel to convert a non-motorized wheeled vehicle to an electrically motorized wheeled vehicle. One system includes a server in communication with the device of each of a plurality of electrically motorized wheels, the server operable to track a position of each of the electrically motorized wheels and communicate the position thereof to a transportation network.

A mobile support such as a stretcher includes a left rear rolling element and a right rear rolling element. The support also includes a sensor system adapted to sense displacement force applied to the support, and a deceleration system. Provided the bed is moving in a forward direction, machine readable instructions executed by a processor cause the deceleration system to apply a decelerating influence to selected members of the set of rolling elements in response to the sensed displacement force in order to assist braking and steering maneuvers.

An electric wheelchair control system is adapted to control a wheelchair and comprises a sensing assembly, an inertial sensor, a controller, a motor driver, and a three-phase AC motor. The sensing assembly is configured to detect an external force applied to the wheelchair and generate a first sensed signal based thereon. The inertial sensor is configured to detect an inclination of the wheelchair and generate a second sensed signal based thereon. The controller selectively outputs a PWM braking signal to the motor driver according to the first sensed signal and the second sensed signal, and the PWM braking signal includes an upper arm braking signal and a lower arm braking signal, wherein the upper arm braking signal and the lower arm braking signal have the same duty cycle and when the upper arm braking signal is at a high level, the lower arm braking signal is at a low level.

Methods of protecting an electrically motorized human-powered vehicle are disclosed. A method may include transmitting, from a remote server, a security input relating to a user of the vehicle; receiving, at the electrically motorized human-powered vehicle the security input relating to the user; validating the security input; and enabling one of a first or second set of features based on the security input, wherein the second set of features is different from the first set of features and wherein one of set of features includes a service mode that enables maintenance access to the vehicle.

The disclosure provides an assist wheel including a wheel, a handrim, an elastic component, two contact components, a driving assembly, two film sensors. The wheel is configured to be rotatably disposed on a wheelchair frame. The handrim is disposed on the wheel and rotatable with respect to the wheel. Two opposite ends of the elastic component are respectively connected to the wheel and the handrim. The two contact components are respectively disposed on the wheel and the handrim. The driving assembly is configured to be fixed to the wheelchair frame. The two film sensors are disposed on the driving assembly and respectively pressed by the two film sensors. Each of the two film sensors is configured to generate a sensor value. The controller is configured to receive the sensor values from the two film sensors and signal the driving assembly.

A seat unit includes a first seat frame and a second seat frame. The first seat frame is connected with a drive carrier and includes at least one first mounting portion. The second seat frame includes wheel frames and a mounting frame fixedly connected with the wheel frames. Each wheel frame is mounted with an auxiliary wheel. A space is defined between the mounting frame and the wheel frames. The drive carrier is located in the space. The mounting frame includes at least one second mounting portion. One of the first mounting portion and the second mounting portion is a rod, and the other is a receiving portion. The rod is movably inserted through the receiving portion. When the second seat frame is displaced relative to the first seat frame, the auxiliary wheels of the wheel frames can move together relative to the drive wheels of the drive carrier.