An improved walker has a detachable propulsion unit, which is attached to the walker by a platform member which extends forwardly from the propulsion unit, with an upwardly extending walker structure partially attached to the platform member. The user steps onto the propulsion unit while support on either side by the handles of the walker. The platform member is so attached to the propulsion unit as to allow a left section and a right section of the propulsion unit to be independently movable with respect to one another, thereby allowing operation of the propulsion unit. The propulsion unit may be a hover board or power board.

A foldable electric wheelchair that includes an array of support frame members strategically joined together at hinge joint points to allow the support user seat, a back support frame, a main support frame and a lower support frame to be easily manually folded into an array that are substantially parallel in the same plane occupying a small volume. The electric motors are powered by a pair of batteries each of which is mounted inside hollow main frame support members out of the way to reduce the overall volume and weight of the electric wheelchair

Systems, devices, and methods are described for providing, among other things, a wheelchair-assist robot for assisting a wheelchair user with everyday tasks or activities at work, at home, and the like. In an embodiment, the mobile wheelchair-assist robot includes a wheelchair interface component configured to exchange control information with a wheelchair controller. In an embodiment, a wheelchair-assist robot mount assembly is provided for, among other things, electrically and physically coupling a wheelchair-assist robot to an associated wheelchair.

An adjustable coupling device for use with a conventional wheelchair and a conventional vehicle. The wheelchair has a transverse foot support with a length. The vehicle has a support deck with a width. The coupling device is removably secured to the support deck. The coupling device is formed with a rectangular base plate. Upstanding components extending upwardly from the base plate are configured to receive and retain the transverse foot support. The width of the base plate is less than the length of the transverse foot support. The base plate has two spaced holes laterally spaced by a distance greater than the width of the support deck. A mechanism has a central section beneath the support deck and has upstanding ends extendable upwardly through the holes in the base plate. The mechanism is adapted to hold the base plate to the support deck.

After manually setting the length of the variable length connecting element (6) that connects drive unit to the wheelchair with the specified seat length, the drive control sub-assembly (10) starts. The element (6), driven by the drive sub-assembly (10), moves down until it rests on the axle connecting the wheelchair wheels. At the same time, the unit frame (1) whose horizontal segment is placed under the footrest of the wheelchair also moves.

The connecting element (6) that connects the drive unit to the wheelchair as well as the end of the drive sub-assembly (10) whose other end is connected to the connecting element (6) are attached to the frame (1) mounted on the clamp (2) located on the steering system (3). The frame comprises of a horizontal segment and a segment forming an obtuse angle with the ground, while the horizontal part, which, after connecting the unit with the wheelchair, fits under the footrest, has two components (12), (13).

Apparatus and associated methods relate to a wheelchair power assist device configured to switch a motorized friction roller between engaged and disengaged modes with a wheelchair wheel, based on an engagement actuator configured to move the friction roller relative to an attachment member removably secured to the wheelchair. The friction roller may be operably coupled with an engagement member configured to move relative to the attachment member. The engagement member may be moved by an extendable and retractable actuator shaft coupled with the attachment member. A manual wheelchair may be converted to a powered wheelchair using a motorized friction roller for each wheelchair wheel. A plurality of power assist devices may be configured to position a respective plurality of friction rollers to leave an open space behind the wheelchair seating area, advantageously permitting the power assist devices to remain attached to a foldable wheelchair in either folded or unfolded configurations.

An automatic traveling cart includes a connecting arm that connects a wheelchair to a front portion or a rear portion of the automatic traveling cart. The automatic traveling cart transports the wheelchair while a user is placed on the wheelchair without intentionally placing the wheelchair on the cart.

The invention relates to a clamping device (1) for fixing a wheelchair drive unit to a wheelchair frame. The clamping device (1) comprises a lever element (4), a first clamping jaw (2), a second clamping jaw (3) and a clamping jaw holder (5). The first clamping jaw (2) and the second clamping jaw (3) are movably mounted on the clamping jaw holder (5) via a jaw path (D.sub.0-D.sub.2) between an open position (D.sub.0) and a closed position (D.sub.2). The lever element (4) is movably coupled to the first clamping jaw (2) and the second clamping jaw (3) via a lever path (S.sub.H) such that a movement of the lever element (4) along the lever path (S.sub.H) causes the clamping jaws (2, 3) to move along the jaw path (D.sub.0-D.sub.2). A transmission arrangement couples the lever element (4) to the first clamping jaw (2) and the second clamping jaw (3) in such a way that, starting from the open position (D.sub.0) of the clamping jaws (2, 3), moving the lever element (4) by half the lever path (S.sub.H/2) causes the first clamping jaw (2) and the second clamping jaw (3) to move by more than half the jaw path (D.sub.0-D.sub.2/2) in the direction of the closed position (D.sub.2) of the clamping jaws (2, 3).

An apparatus kit and associated methods relate to a wheelchair power assist device kit configured to be installed, uninstalled and exchanged using an exchange tab welded to a wheelchair, and when installed to switch a motorized friction roller between engaged and disengaged modes with a wheelchair wheel, based on an engagement actuator configured to move the friction roller relative to the wheelchair. The friction roller may be operably coupled with an engagement member configured to move relative to the wheelchair. The engagement member may be moved by an extendable and retractable actuator shaft coupled with the wheelchair. A manual wheelchair may be converted to a powered wheelchair using the exemplary device kit comprising a motorized friction roller for each wheelchair wheel while leaving an open space behind the wheelchair seating area, advantageously permitting the power assist devices to remain attached to a foldable wheelchair in either folded or unfolded configurations.