A mounting unit for adjustably mounting an add-on piece to a frame, in particular of a wheelchair, includes at least one drum receiving unit having at least one aperture and female thread. The drum receiving unit is an integral part of the frame or adapted to be attached to the frame. At least one drum assembly has at least one hole and a male thread. At least one bolt is part of the add-on piece or adapted to be mounted therewith to hold the add-on piece. The drum receiving unit is adapted to receive the drum assembly. The female thread mates with the male thread and allows an alignment of the position of the hole with respect to the aperture, such that the bolt can be inserted through the aperture at least partly into the hole. The drum receiving unit with the drum assembly and/or the drum assembly with the bolt comprises a detachable form fit connection. At least one of the drum receiving unit, the drum assembly and/or the bolt comprises a detachable force fit connection with respective mating component.

Means for reconfiguring a wheelchair are disclosed wherein a user or an occupant of the wheelchair is enabled to repeatably alternate the wheelchair between an original load-bearing configuration and a modified load-bearing configuration by engaging and disengaging a ground-contacting adaptive implement operatively connected to a load transitioning mechanism, said load transitioning mechanism adapted for connection to a forward portion of the wheelchair. Embodiments according to the present invention enable an occupant of the wheelchair to alternate the wheelchair, through a cyclic operation sequence, between the original configuration and the modified configuration by toggling of a manipulable switch and subsequent momentary reclining of the wheelchair. The user willfully effectuates a change in the angular disposition of the ground-contacting adaptive implement relative to the wheelchair about a substantially horizontal joint axis wherein in the modified configuration a deployed angular orientation is maintained under load-bearing conditions during travel of the wheelchair in all directions. Embodiments of the present invention enable wheelchair reconfiguration with simplicity of operation while ensuring rigid attachment of a ground-contacting adaptive implement to the wheelchair to confer special functionalities to the wheelchair while preserving comfort and safety for the user while the wheelchair is in the modified load-bearing configuration.

A wheelchair assembly is provided for easy assembly, disassembly, and transport. The wheelchair assembly includes a plurality of subassemblies, including a first subassembly having a first frame and a second subassembly having a second frame. The wheelchair assembly includes at least one motor and a plurality of wheels. The plurality of subassemblies are configured to be selectively attached with each other to form the wheelchair assembly, and the wheelchair assembly is configured to be easily assembled and disassembled. The subassemblies are configured to be disassembled from each other so that each of the plurality of subassemblies can be separately carried by a single person. The wheelchair assembly is an all-terrain wheelchair assembly.

An electric wheelchair propulsion system for a wheelchair. The propulsion system has a first and a second torque transfer hub rotatably mounted to a respective first and second drive wheel of the wheelchair, and an elongated axle tube arranged between the first and second hubs. First and second motors are arranged within the axle tube extending from opposing ends thereof. First and second drive axles are insertable into bores of the first and second hubs respectively, and are operatively connected to the first and second motors respectively. Means are provided to control the actuation of the motors. Actuation of the motors drives a rotation thereof, transferring a torque to the drive axles. The drive axles in turn transfer a torque to the hubs, thereby rotating the drive wheels.

The present invention relates to an indoor and outdoor mobility system 1 forming a mobility device 10 for people with walking disability, the system comprising a base 20 two indoor front wheels 30, which can be attached to the base 20; two outdoor front wheels 40, which can be removably attached to the base 20, wherein the outdoor front wheels 40, when attached to the base 20 comprise a wider track width compared to the indoor wheels 30; indoor back wheels 52 which can be attached to the base 20; and outdoor back wheels 62 which can be removably attached to the base 20, wherein the outdoor back wheels 62, when attached to the base 20 comprise a wider track width compared to the indoor back wheels 30. The invention further comprises a method for the change of a mobility device for people with walking disability from an indoor to an outdoor use.

Transition means for adapting a wheelchair are disclosed wherein a user or an occupant of the wheelchair is enabled to repeatably alternate the wheelchair between an original mode and an adapted mode by engaging and disengaging a unilaterally-connected adaptive implement.

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 electric wheelchair propulsion system for a wheelchair. The propulsion system has a first and a second torque transfer hub rotatably mounted to a respective first and second drive wheel of the wheelchair, and an elongated axle tube arranged between the first and second hubs. First and second motors are arranged within the axle tube extending from opposing ends thereof. First and second drive axles are insertable into bores of the first and second hubs respectively, and are operatively connected to the first and second motors respectively. Means are provided to control the actuation of the motors. Actuation of the motors drives a rotation thereof, transferring a torque to the drive axles. The drive axles in turn transfer a torque to the hubs, thereby rotating the drive wheels.

An auxiliary frame system for a wheelchair, the wheelchair having a frame comprising two openings to releasably attach axle portions of rear wheels and defining between them a main rear wheel axis; wherein the auxiliary frame system comprises: a pair of wheel displacing elements; fastening elements to releasably attach each wheel displacing element to the frame of the wheelchair through the openings; wheel holders for bearing respective rear wheels of the wheelchair, wherein each of the wheel holders is associated with a respective wheel displacing element, and the wheel holders define between them a shifted rear wheel axis; at least one anchoring link to releasably secure at least one of the wheel displacing elements to the frame of the wheelchair at an additional attachment point. Also provided are wheelchairs comprising such auxiliary frame system and methods to displace the position of rear wheels of a wheelchair.

A system for person mobility devices such as wheelchairs. The system includes a personal mobility apparatus having a wheel support portion, and an axle engaging portion that is attachable to and detachable from the wheel support portion. The wheel support portion may be a body portion or a frame portion of the personal mobility apparatus that is formed separately to the wheel support portion. The wheel support portion may be shaped so as to fit a complementary shape of the axle engaging portion. The system allows for customization of a mobility apparatus for a particular application or user by adjusting the position or orientation of the wheel axles.