A folding wheelchair includes two side frames, which are connected to each other via a cross-strut. A fabric is stretched between the side frames in order to form a seating area of a seat. The side frames are formed identically and include an outer tube and an inner tube. The outer tubes have a slot extending in a longitudinal direction (L), which opens at least into an outer tube end. The inner tubes each include a slot extending in the longitudinal direction (L), which opens at least into an inner tube end. A tensioning rod is accommodated in one of the outer tubes and opens into the associated inner tube. The fabric is led to the outside through the slots of the inner tube and outer tube. The inner tube, the fabric and the tensioning rod are connected to one another.

A seat assembly for wheelchair of the type having a structure expandable from a contracted condition to an expanded position comprises a pair of tubular members connected to the structure. Each tubular member has a main tubular body, a secondary tubular body parallel to and inside the main tubular body, and an elongated slit extending along both the main tubular body and the secondary tubular body and common to both the main tubular body and the secondary tubular body. The slits open into an inner channel of the secondary tubular body. The main tubular body and the secondary tubular body form a hollow integral piece of composite material. A panel, e.g., of non-rigid material has rods on its opposite edges, the rods having a diameter smaller than that of the secondary tube and larger than a width of the slit to be held captive in the secondary tube, whereby the panel extends through the slit.

A chair includes a frame unit including a seat frame, a leg rest that is pivotally mounted to the seat frame, and a rest adjusting mechanism that is connected between the leg rest and the seat frame. The rest adjusting mechanism is convertible between an unlocked state, where the leg rest is permitted to pivot relative to the seat frame, and a locked state, where the leg rest is not permitted to pivot relative to the seat frame.

An adjustable wheelchair for ready assembly in accordance with embodiments of the invention are disclosed. In one embodiment, the wheelchair includes, an undercarriage including, a horizontal axle including a first end segment telescopically coupled to a body segment and a second end segment telescopically coupled to the body segment opposite the first end segment allowing for adjustment of the wheelchair width, and a tongue including a body segment telescopically coupled to an end segment allowing for adjustment of the wheelchair length, and a seat post including an end segment telescopically coupled to a body segment allowing for adjusting the wheelchair seat height; and a pair of wheels; and a swivel wheel coupled to the tongue of the undercarriage to support the wheelchair and provide mobility; and a seat bottom coupled to the end segment of the seat post for load-bearing support; and a seatback rotatably coupled to the seat bottom.

A dampening system is efficient in dampening vibration through a wheelchair frame. The system allows a lower base frame and wheels to be rigidly attached, while an upper seat frame is joined to the base frame through elastomeric dampening bushings to isolate the seat frame from the base frame. The bushings may be hidden in vertical upright tubes of the base frame. The bushings can also be used for supporting front caster forks and/or a rear axle assembly in isolation to the base frame.

An adjustable chair assembly comprising a frame, a seat assembly, a back assembly and at least one of a seat space-filling element and a back space-filling element. The seat assembly extends along a seat plane and comprises a first seat element and a second seat element adjustably positionable with respect to one another along the seat plane and together defining a support surface of the seat assembly. The back assembly extends along a back plane and comprises a first back element and a second back element adjustably positionable with respect to one another along the back plane and together defining a support surface of the back assembly. A central gap is defined in at least one of the support surfaces and the at least one of the seat space-filling element and the back space-filling element is removably insertable in the central gap of the corresponding support surface.

A wheelchair is provided that includes a motor-driven laterally extendable platform that can be extended and retracted to assist a user in getting onto and off of the wheelchair. A motor drive system is provided that can be actuated by an actuator. The actuator can be, for example, a wired remote controller or a wireless remote controller. Full actuation can be accomplished by a single triggering motion of the actuator, or the actuator can be configured to require a constant holding of the actuator until a desired position of the platform is reached. Travel limits can be programmed into the motor drive system such that the drive system stops driving extension or retraction of the platform once a travel limit is reached. The wheelchair can also be converted into a recumbent position. Methods of transferring a user onto or off of the wheelchair are also provided.

A seating system including a seat portion having a seating surface and a back portion having a support surface is disclosed. The seating system may be configured in a seated (or upright) configuration in which the seating surface of the seat portion is generally perpendicular to the support surface of the back portion. The seating system may also be configured in a stored configuration in which the seating surface of the seat portion is generally parallel with and faces towards the support surface of the back portion. The seating system may also be configured in a recumbent position in which the seating surface of the seat portion is generally parallel and faces in the same direction as the support surface of the back portion.

A chair includes a frame unit including a seat frame, a leg rest that is pivotally mounted to the seat frame, and a rest adjusting mechanism that is connected between the leg rest and the seat frame. The rest adjusting mechanism is convertible between an unlocked state, where the leg rest is permitted to pivot relative to the seat frame, and a locked state, where the leg rest is not permitted to pivot relative to the seat frame.