A drive device (1) for a wheelchair (2) comprises a control element (23), a chassis (9, 13) and a support frame (15). A fixing arrangement (19) is mounted on the support frame (15) and can be fixed to a wheelchair frame (7) of the wheelchair (2). The fixing arrangement (19) is designed such that it can be automatically connected to and released from the wheelchair frame (7) of the wheelchair (2) by a fixing drive (21).

A mobility assistance apparatus includes first and second frames positioned on left and right sides of a user; a hinge arm mechanism coupled to the first and second frames; and a pivotable securing unit or a walking seat coupled to the frames to transfer at least a portion of the user's body weight from the legs and to transfer weight through the user's hip or pelvis to the first and second frame enabling the user to stand or work for an extended period without requiring the user's arms to hold the frame.

A patient transfer apparatus configured to traverse stairs includes a seat assembly, a rear leg pivotably coupled to the seat assembly, a track integrated with the rear leg, and a wheel coupled to a distal end portion of the rear leg. The seat assembly includes a frame with a seat portion. The rear leg is pivotable relative to the seat portion between a transport position and a stair traversing position. In the transport position the wheel is configured to contact a floor, and in the stair traversing position the track is configured to contact the stairs.

A wheelchair frame assembly for a self-balancing board. The wheelchair frame assembly is mountable to the self-balancing board. The self-balancing board includes at least one gyroscopic assembly and includes two wheels on opposing ends of an axle, controlled by two upper surfaces that independently pivot about the axle. Independent pivoting of each of the two upper surfaces controls a speed of an adjacent wheel, and a direction of the self-balancing board. The wheelchair frame assembly includes a seat, a footrest, a forward caster wheel, a rearward caster wheel, a left handlebar, and a right handlebar. The handlebars interface with the two upper surfaces to enable an individual seated in the wheelchair frame assembly to control speed and direction of the self-balancing board by moving the handlebars, thereby pivoting the two upper surfaces and causing the two wheels to independently rotate.

An undercarriage system couples to other vehicles, such as wheelchairs and provides mobile application-driven operation. In an exemplary application, the system may be configured to receive a push driven wheelchair and temporarily retrofit the wheelchair for motorized operation. The system includes a console for a mobile computing device that operates a software application and user interface that steers the undercarriage system for navigating through an area such as an airport or other complex. In some embodiments, the software application may provide automated navigation of the undercarriage system so that, for example, the user only needs to enter in a destination (for example, a terminal number) and the application automatically drives the system including the wheelchair to the destination. Sensors and/or cameras may detect objects or markers to guide the steering.

Wheelchair (10) with two independent driving arms (21, 21), comprising a seat (16), two rear large wheels (12, 13) and two front small wheels (14), wherein the small wheels (14) can be freely turned around a vertical axis, and a common frame (11) for holding the listed parts, and the two driving arms (21, 21) are fixed to the frame (11) by means of respective pivot bearings (25) which are fixed at a low position close to the place where the small wheels (14) are attached to the frame (11), and the driving arms (21, 21) extend till a height which is sufficiently high for the person sitting in the wheelchair (10) to hold their upper end portions easily with hands and to move them in forward-backward directions around the respective pivotal bearings, and both of the large wheels (12, 13) are equipped with respective brakes that can be operated by the driving arms (21, 21) or by respective brake handles (42) positioned on the driving arms (21, 21), and to respective lower sections of the driving arms (21, 21) respective ropes (32, 32) are connected, and the two large wheels (12, 13) comprise respective wheel hubs (30, 30) each equipped with freewheel, and to one side of each wheel hub (30, 30) a respective one of rope drums (31, 31) is attached, the rope drums (31, 31) are each provided with a spring bias, and a winding made of said rope (32, 32) comprising a predetermined number of turns is provided on the mantle of each rope drum (31, 31), wherein a predetermined displacement length of the pulling of the rope (32, 32) in forward direction results in a given turning of the associated wheel hub (30, 30) in forward direction, and when the rope drum (31, 31) is turned in the other direction the freewheel releases the connection towards the large wheel (12 or 13), and the wheel hub (30, 30) comprises a release mechanism that releases the locking of the freewheel when the large wheel (12 or 13) is moved in backward direction and backward movement gets allowed.

An attachment for a wheelchair, having a seat frame with a foot support, includes a frame, which supports an electric motor, a battery and a steering mechanism, and a wheel that is powered by the electric motor and is steerable by the steering mechanism. The attachment also includes a hook for supporting the foot support of the wheelchair when the attachment and the wheelchair are attached to one another.

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 adjustable seat comfort wheelchair for maximizing comfort and convenience includes a chair base, a chair seat with a chair back, a headrest, a pair of armrests, a seat bottom, and a footrest. An electric drive train is coupled to the chair base and comprises: a battery compartment housing a rechargeable battery, a motor that is in operational communication with the rechargeable battery, a drive chain coupled to the motor, a pair of rear wheels that are driven by the motor coupled to the drive chain, a steering linkage, a pair of front wheels, a steering actuator, a control module, a lift piston, and a control stick that is in operational communication with the control module to operate the motor, the steering actuator, and the lift piston. The lift piston lifts the seat bottom to a lifted position to assist the user in standing.

A manual electric folding scooter belongs to the technical field of medical instruments comprises a folding assembly, a push rod shaft and a rotating spindle arranged in turn, one end of an electric push rod is fixed in the push rod shaft, and the other end of the electric push rod is driven by a motor; the folding assembly comprises a hook shaft with both ends welded to a fixing plate, two reinforcing rods are symmetrically welded in the middle of the hook shaft, and the free ends of the reinforcing rods after passing through the symmetrically arranged fixing plate are arranged in sliding slots of frame fixing pieces on corresponding sides.