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.

Disclosed is a wheelchair power apparatus for electronic driving conversion. It is an object of the present invention to provide a wheelchair power apparatus for electronic driving conversion, which can provide severely disabled people, for instance, patients with spinal cord injury, the weak or the old, who use wheelchairs, with convenience in movement, and convert a manual four-wheel wheelchair into an electronic three-wheel wheelchair just by detachably mounting the electronic module having electronic wheels to the existing manual four-wheel wheelchair.

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 with a deadman switch, 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, and control the mode of operation of the controller in accordance with the state of the deadman switch.

An elevating walker chair that allows both riding and walking. The chair elevates by a parallelogram power unit. The seat transforms between a saddle and seat upon changes in saddle/seat elevation. Also a lifting parallelogram power unit structure. Disclosed is an elevating walker chair for people with limited mobility resulting from compromised musculature, coordination or balance, or for able bodied individuals that must perform tasks for which assistance is desired.

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 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.

The present disclosure describes devices and systems that can be integrated with a foldable, manual wheelchair to convert the wheelchair into a hybrid chair capable of both manual operation and motor-powered operation. A wheelchair powering device includes a motor that is operatively coupled to a roller member so that rotation of the motor shaft causes rotation of the roller member. The roller member may be engaged against a tire of the wheelchair so that rotation of the roller member causes rotation of the tire via friction between the roller member and tire.

A control device for a power assist wheelchair which includes a compensation turning torque calculation unit that calculates a compensation turning torque value for compensating for at least a part of the shortage or excess of the actual turning torque value with respect to the predicted turning torque value, in which the compensation turning torque value is smaller when the vehicle speed is a first speed than when the vehicle speed is a second speed faster than the first speed; a first target current determination unit that determines a target current of the first electric motor based upon the first manual torque value and the compensation turning torque value; and a second target current determination unit that determines a target current of the second electric motor based upon the second manual torque value and the compensation turning torque value.

An electric wheelchair according to an embodiment of the present disclosure includes a seat configured to allow a person to be seated, a frame configured to support the seat, a driver configured to be coupled to the frame; and an armrest configured to be hinged to the frame, in which the armrest includes a first portion which extends in a vertical direction and is disposed to overlap a side surface of the frame, a second portion which extends forwardly from an upper-end portion of the first portion, and a third portion which extends forwardly from a lower end portion of the first portion, and when the armrest is rotated from the first position to the second position, at least any one of the first portion and the third portion is disposed to overlap the side surface of the frame.

A method of controlling a motorized wheelchair according to an embodiment, the motorized wheelchair including a seat frame provided with a seat for seating of a user, a back frame provided with a backrest for supporting the user's back and detachably connected to the seat frame, and main wheels connected to a lower end of the back frame, may include inputting a reverse command to an input unit, outputting an image photographed by a rear camera installed in the back frame to an output unit, detecting, by a rear height difference sensor installed in bottom of the back frame, a height difference in the ground, determining whether the height difference detected by the rear height difference sensor is larger than or equal to a preset reference height difference, performing an emergency braking defined as activating a brake of the main wheels when the detected height difference is larger than or equal to the reference height difference, and outputting a warning about the detected height difference to the output unit.