Abstract: Disclosed herein is a backrest interlocking type frame for a foldable wheelchair.

Abstract: A drive device for a wheelchair includes a control element, a chassis and a support frame. A fixing arrangement is mounted on the support frame and can be fixed to a wheelchair frame of the wheelchair. The fixing arrangement is designed such that it can be automatically connected to and released from the wheelchair frame of the wheelchair by a fixing drive.

Abstract: An auxiliary drive device for a wheelchair has at least one electrically driven drive wheel and a coupling mechanism for coupling the auxiliary drive device to the wheelchair. The electrically driven drive wheel is supported at a steering shaft and freely pivotable with respect to the auxiliary drive device. The steering shaft is arranged such that, when the auxiliary drive device is coupled at a wheelchair ready to be operated, a castor is provided for the electrically driven drive wheel.

Abstract: Systems and methods of wheelchair systems herein provide a wheelchair capable of providing a brace system that moves between retracted and deployed positions to provide a physical support to the legs of the user to assist the user in transition between a plurality of user positions. Embodiments determine a user request for such assistance and then either deploys and/or retracts the brace system. Embodiments provide for assistance independent of additional people, such as aides, to assist the user in moving or transitioning between the plurality of user positions while also allowing or permitting the wheelchair to function normally when the brace system is in the retracted position.

Abstract: 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.

Abstract: A propulsion assist device for a wheelchair having a hand rim slideably housed inside a channel of a frame pivotably connected to a lever arm. The frame is further comprised of a portion of grip material positioned inside the channel along an underside of a top of the frame. When a pair of devices are installed on a pair of hand rims of the wheelchair, the wheelchair is moved forward by a coordinated rowing motion of both lever arms forwards and then backwards along the hand rim. The pivoting motion of the frame causes the grip material sandwiched between the frame and the hand rim to pressure grip the hand rim and turn it when a user moves the lever arms through their rowing motion. Repositioning the frame along the hand rim causes the gripping material to release and slide along the hand rim before repositioning.

Abstract: A mobility device that includes support assemblies that may be secured to feet, legs, thighs, and torso of a user. An exemplary mobility device may further include an actuator that may be coupled with the exemplary support assemblies and may actuate rotational movements of the exemplary support assemblies with respect to each other. Such movement of support assemblies may accordingly move respective limbs of a disabled user. An exemplary mobility device may allow for a user to change position from a lying position to a standing position or from a standing position to a sitting position, which may significantly increase mobility of a disabled user. An exemplary mobility device may further include an exemplary wheeled base that may allow a disabled user to further move around.

Abstract: A movable carrier includes a main body, a first wheel, a driving module, a first support member, a second wheel, a seat, a first handle and two first switches. The first wheel is pivotally connected to the main body. The driving module is disposed in the main body. The first support member is connected to the driving module. The second wheel is pivotally connected to the first support member. The seat is disposed on the main body. The first handle is pivotally connected to the seat and has a trigger portion. The first switches are disposed on the seat. When the first handle rotates with respect to the seat and the trigger portion triggers the first switch, the driving module drives the first support member to rotate with respect to the main body, so as to increase or decrease a distance between the first wheel and the second wheel.

Abstract: An exercise system includes a base module having a seat with a seat depth, and a vertically adjustable back configured to fixedly engage with the base module at a first seat depth and a second seat depth different from the first seat depth.

Abstract: A wheel locking axle assembly is provided to secure a wheel to a hub of a child conveyance device. An embodiment of the wheel locking assembly includes a hub including a retention feature and a wheel assembly. The wheel assembly includes a wheel, a sleeve coupled to the wheel, a spindle that is slidable within a channel of the sleeve, and at least one detent captured by the sleeve and the spindle. The spindle can be moved between a first longitudinal position with respect to the sleeve in which a portion of each detent extends radially outwardly through a respective through-hole in the sleeve to lockingly engage the retention feature of the hub and a second longitudinal position with respect to the sleeve in which each detent does not extend radially outwardly through the through-hole and disengages the retention feature of the hub.

Abstract: 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 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.

Abstract: 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.

Abstract: A mobility assistive device includes a first frame including a first support and a first wheel, a second frame including a second support and second wheels, and a connecting structure including first connecting boards connected to the first support. The second support includes a supporting rod and abutting portions. Each first connecting board has a slot for being engaged with the supporting rod, an abutting surface for abutting against the abutting portions, and a perforation. Each positioning member is disposed on one the second support, and includes a positioning portion. When the slots are engaged with the supporting rod and the abutting surfaces are abutted against the abutting portions, the positioning portions are movable between a locked position and a released position. When in the locked position, the positioning portions are inserted into the perforations. When in the released position, the positioning portions are drew out from the perforations.

Abstract: The present invention is a smart electric wheelchair for the elderly, which comprises a battery for power supply and a control system for integrally controlling the electric wheelchair, and also comprises a body bracket, wherein the bottom of the body bracket is connected with a standing platform for a user to stand, a driving unit is provided on each side of the standing platform to drive the electric wheelchair; and a foldable seat is provided in the middle of the body bracket, and an armrest is provided on each side of the seat, with at least one of the armrests provided with a controller for controlling the entire electric wheelchair.

Abstract: Provided is a wheelchair that can be easily operated with either a right or left hand. The wheelchair according to the present invention is provided with: a right-left pair of first handrims connected to handrim spokes; a right-left pair of second handrims connected to spokes; a first rotary shaft for transmitting a first rotational force generated by rotation of the left first handrim to a right wheel; and a second rotary shaft for transmitting a second rotational force generated by rotation of the right first handrim to a left wheel, wherein a first power transmission device on a right inner shaft of a right drive mechanism meshes with a second power transmission device on the second rotary shaft, and a third power transmission device on a right outer shaft of the right drive mechanism meshes with a fourth power transmission device on the first rotary shaft.

Abstract: This invention comprises a low cost, high strength sit-to-stand wheel chair assembly. It is comprised of a base with an upward extension formed of a linear actuator mounted within telescopic members. The telescopic members carry large wheels together with a linkage operated front wheels that are mounted on the forward position of the base. A power linear actuator assembly causes the telescopic members to extend and retract to move the wheelchair assembly from the mobile position to a raised position that permits the base to engage the floor surface and to assist the patient to move from a sitting position to a standing position.

Abstract: A mobility aid, comprising a first frame member, a second frame member, and at least one pivoting member, which is connected to the first frame member and is pivotably mounted about a pivot axis to the second frame member. The pivoting member can be moved into a use position and into a transport position relative to the second frame member. A first locking device locks the pivoting member relative to the second frame member whenever the pivoting member is in the use position. A second locking device locks the first frame member relative to the second frame member whenever the pivoting member is in the transport position.

Abstract: 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.

Abstract: A centreless wheel for a vehicle is suitable for use in a road-going vehicle, a wheelchair, a trolley, etc. and includes a rotor that is annular around an axis, the rotor having an inner surface forming a plurality of radial teeth to form an annular gear. The rotor is mounted in a member which is annular around the axis, the member having a housing for a drive mechanism with a driveshaft and a pinion mounted thereon in engagement with the annular gear to transmit torque to the rotor. A connection assembly connects the member to the vehicle. An actuator is configured to act upon the housing to move the member and the rotor relative to the connection assembly.

Abstract: A swing arm assembly for a foldable wheelchair consisting of a camber tube and adapters is disclosed. The adapters mount to the frame of the wheelchair and receive the ends of the camber tube. One end of the camber tube is pinned into an adapter such that it pivots. The other end is pinned in an adapter using a quick release pin. The camber tube improves the stability of the foldable wheelchair. When desired to fold the wheelchair, the quick release pin is removed and the camber tube is rotated approximately 90 degrees, thereby allowing the wheelchair to fold. The adapters may be mounted to the wheelchair frame or to stub axles if used. The swing arm assembly adds substantial stiffness and stability to a folding wheelchair.

Abstract: A wheelchair device for actively moving a seat unit, in particular a seat part and/or a backrest part of the seat unit, of a wheelchair, has at least one movement conversion unit which is arrangeable at least in part on at least one drive wheel of the wheelchair and which is provided for the purpose of converting a movement of the at least one drive wheel into a movement of the seat unit.

Abstract: A spacing bar of a wheelchair frame comprising an elongated structural body having a pair of opposite ends, each of the opposite ends having a C-shaped clamp configured for being clamped to respective lateral frame members of the wheelchair frame, wherein the elongated structural body and the C-shaped clamps are integrally made of a monocoque composite construction, and a tightening assembly for each of the C-shaped clamps, the tightening assemblies being arranged in the spacing bar to loosen and tighten the C-shaped clamps to the respective lateral frame members.

Abstract: In a nonaqueous electrolyte secondary battery containing a silicon material as a negative electrode active material, the initial charge-discharge efficiency is improved. Negative electrode active material particles (10) according to an embodiment each contain a lithium silicate phase (11) represented by Li2zSiO(2+z) (where 0<z<2) and silicon particles (12) dispersed in the lithium silicate phase (11). In base particles (13) each containing the lithium silicate phase (11) and the silicon particles (12), preferably, a peak originating from SiO2 is not observed at 2?=25° in an XRD pattern obtained by XRD measurement of the particles.

Abstract: A wheel assembly comprising a wheelchair wheel (5) and a backstop arrangement (10; 30; 70) configured to selectively engage and disengage a backstop function and comprising a backstop selector (15; 35; 75) and a backstop member (18; 38; 78), wherein the wheel (5) comprises an internal-gear wheel hub (11; 31; 71) comprising a number of internal gears (57, 58) and having an inner rotatable circumferential surface (13; 33; 73), and wherein the backstop member is configured to allow the inner circumferential surface to rotate in one direction and to prevent rotation in the opposite direction. The wheel assembly comprises further a gear-shift arrangement comprising a shift member (54), which is axially moveable within the internal-gear hub (31) to engage a specific gear of said number of internal gears (57, 58), and wherein the shift member (54) via a connector member (55) is operatively connected to the backstop selector.

Abstract: A resilient backrest dampening mechanism is provided for use with chairs having a seat and a backrest, the mechanism comprising four pivot points; a first pivot point arranged on a base different from the backrest; a second pivot point arranged at a distance from the first pivot point on the base, wherein a bracket is pivotally connected to the second pivot point; a third pivot point provided between the bracket and a first end of a backrest connection member, and the backrest connection member being adjustably connected to the backrest; a fourth pivot point provided in the bracket; a resilient member arranged between the fourth pivot point and the first pivot point, and wherein all the pivot points pivot around corresponding axes and all of the axes are parallel.

Abstract: A device positioned near a user provides support to the user in sitting and standing positions. The user can move from sitting to standing, without assistance, even if the user is relatively weakened. The device includes (1) a base and tower, and provides support to the user when in-between; (2) a personal support coupled to the tower, and operated by a user control, such as a wheel or a motor. The tower can include padding or knee support so the user can lean against the tower.

Abstract: A motorized tilting mechanism for a reclining chair allows the chair be placed in a zero gravity position. A base frame comprising 2 sub-frames pivot in relation to each other to provide simple tilting mechanism.

Abstract: An assisted spring seat height optimization lift device and method of use thereof is presented herein. The device is generally comprised of a seat frame attached to a scissor lift assembly that can be moved by engaging a releases mechanism attached to a lifting mechanism. The device is used to lift a handcycle user to a height that is manageable to transfer to a wheelchair independently without impeding the functionality of the handcycle.

Abstract: An apparatus for facilitating user propulsion of a wheelchair having a frame for supporting a user and a pair of rear wheels that rotate about an axis. The apparatus includes a handgrip having an outer surface and an opposite, inner surface such that when a radial force relative to the axis is applied to the outer surface by the user the inner surface is configured to engage a rear wheel in the pair of rear wheels such that the rear wheel can be rotated and the wheelchair propelled. A pair of coupling members configured to couple the handgrip to the frame and hold the handgrip in a neutral position, and the pair of coupling members are further configured to alternately increase in length and become tensioned as the user moves the handgrip away from the neutral position to rotate the wheel.

Abstract: The modular wheelchair system includes an upper component, and an autonomous power base configured to detachably couple to the upper component. The autonomous power base includes one or more processors, one or more memory modules, and machine readable instructions stored in the one or more memory modules that, when executed by the one or more processors, cause the autonomous power base to: determine whether the upper component is separated from the autonomous power base; and navigate to a location in response to determination that the upper component is detached from the autonomous power base.

Abstract: A connector structure in an electric mobility device including a mobility body driven by a motor, a seat unit which includes an operation unit to control the motor and which is detachably attached to a seat attachment member of the mobility body, and a seat height adjustment mechanism which adjusts a height position of the seat attachment member to adjust a height position of the seat unit relative to the mobility body. The connector structure connects a signal line provided in the seat unit to a signal line of the mobility body, and includes a first connector attached to the seat unit and connected to the signal line which is connected to the operation unit, and a second connector attached to the seat attachment member and connected to the signal line of the mobility body.

Abstract: A foldable wheelchair comprises a plurality of width-adjustable hinged foldable cross-members connected to side frames to support a pivotable tiltable seat frame. The seat frame angle is operably controlled by use of gas springs that can be configured to support users of varying weight. The wheelchair is further configured to control lateral stability of the seat frame. The seat frame cooperates with a forward positioned pivot that maintains the user's knees in a position relative to the ground. Wheel adjustments allow for a range of seat height.

Abstract: A patient transport apparatus transports a patient over a floor surface. The patient transport apparatus comprises a support structure and support wheels coupled to the support structure. An auxiliary wheel is coupled to the support structure to influence motion of the patient transport apparatus over the floor surface to assist users. An actuator is operatively coupled to the auxiliary wheel and operable to move the auxiliary wheel relative to the support structure from a retracted position to a deployed position. A user interface sensor is operatively connected to the actuator and configured to generate signals responsive to the user touching the user interface. A controller is operatively coupled to the user interface sensor and the actuator to operate the actuator in response to detection of signals.

Abstract: 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 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, walk or work for an extended period without requiring the user's arms to hold the frame. A motorized drive helps the user move with ease. The drive can be computer controlled.

Abstract: The invention is for a standing 3 wheeled wheelchair with a pivoted seat having link means, a dyad means, removable side handle actuator means, a lockable knee support with interlocking cam means, which enables the user to stand effortlessly and safely in the wheel chair.

Abstract: Wheelchair devices and systems that have wheels with adjustable camber. The device has a bracket attached to a wheelchair and a receiver configured to couple to the axle of the wheel. The position of the receiver relative to the bracket can be adjusted by the user to alter the position of the axle relative to the bracket, thereby altering the camber in the rear wheel. A top portion of the rear wheel can remain in a vertical plane of travel regardless of the amount of camber in the wheel and a bottom portion of the rear wheel can remain in a horizontal plane.

Abstract: A wheelchair includes a chair frame mechanism and two pedal mechanisms. The chair frame mechanism includes a frame body and two pedal-mounting rods. The pedal mechanisms are respectively mounted to the pedal-mounting rods. Each of the pedal mechanisms includes a pivot unit sleeved on the corresponding pedal-mounting rod and having has a guide groove, a positioning unit mounted to the corresponding pedal-mounting rod and engaging the guide groove, and a pedal unit mounted to the pivot unit.

Abstract: A stowable seat for an aircraft may comprise a housing and a backrest support configured to rotate relative to the housing. A locking mechanism comprising a first latch may be coupled to the backrest support. A releasing member may be in operable communication with the first latch. The releasing member may be configured to rotate the first latch relative to the backrest support. The releasing member may be located behind a cushion coupled to the backrest support.

Abstract: A foldable wheelchair having side frames arranged on both sides of the wheelchair, a cross-strut assembly and seat tubes for receiving a seat cover, wherein the cross-strut assembly is mounted about parallel pivot axes in the side frames, and an axis of rotation of struts of the cross-strut assembly is arranged parallel to the pivot axes of the cross-strut assembly, and the cross-strut assembly is connected to the seat tubes, wherein the wheelchair has guide levers and each guide lever is mounted in the respective strut of the cross-strut assembly between the axis of rotation of the struts of the cross-strut assembly and the respective seat tube, and the guide lever is mounted at a distance therefrom in the side frame assigned to the seat tube so as to be pivotable about a pivot axis that is arranged parallel to the pivot axes of the cross-strut assembly.

Abstract: A wheelchair includes right and left side frames and a connection unit connecting the side frames to each other. The side frames each include a unit fixture for detachably fixing the connection unit. The connection unit is selectable from a foldable connection unit connecting the right and left side frames with a distance therebetween changeable or a non-foldable connection unit connecting the right and left side frames with the distance therebetween kept constant.

Abstract: The present invention is an overbed table and transport chair, or more specifically, the present invention is a medical furnishing that serves as an adjustable overbed table in a first configuration and a wheeled transport chair in a second configuration. The present invention may also serve as a medical staff work station, provide storage of patient records and medical charts, storage for the patient's personal effects, personal mirror, IV stand, catheter bag stand, and secure storage for portable oxygen.

Abstract: A back lifting chair designed for treating and preventing back problems by reducing pressure on a user's spinal disc. The chair provides an up-lifting motion on the user's torso, reducing the weight and pressure asserted on the lumbar disc, and preventing any further damage to it. The chair can be modified from an existing chair. In one configuration, a torso lifting harness which can lift the user's upper torso is connected to the backrest of the chair. The back rest of the chair provides an upward and downward movement, hence partially or completely lifting the user from the seat, effectively reducing the pressure on the user's spine and back. The upward motion can be initialized by the user, or alternatively, it can be automatically activated by the weight sensor installed on the seat area which detects the prolonged period of sitting.

Abstract: A wheelchair rear wheel support assembly and a detachable arm assembly is described. The rear wheel support assembly is adjustable by finite adjustment both in the horizontal and vertical planes whereby to adjust the position of the rear wheels at a center of gravity to suit a user person to optimize the efforts of propulsion of the wheelchair by the user and thereby significantly increasing its quality of life. The detachable armrest is easily adjustable in height and can be pivoted away from its position of use by simple hand-operating levers easily accessible to the user person. It can also be easily removed with little effort.

Abstract: Disclosed is a foot-operated private vehicle, the vehicle including a chassis that extends heightwise along a vertical axis, the vehicle also including a front set of wheels mounted at the front of this chassis, a rear set of wheels mounted at the rear of this chassis, and a unit for controlling the speed and direction of the vehicle, taking the form of a right-hand pedal and a left-hand pedal, the private vehicle being characterized in that at least one pedal, known as the steering pedal, is mounted in a rotatable manner with respect to the chassis about a pivot axis parallel to the vertical axis of the chassis of the vehicle, a rotation of this steering pedal about its pivot axis being used to control the direction of the vehicle.

Abstract: A wheelchair is provided which includes a body, and driving wheels arranged on the both sides of the body. The wheels include a rim portion, a hub portion, an hand rim, and fastening members. A tire is attached to the outer peripheral part of the rim portion. The hub portion is arranged at the center of the rim portion and coupled to the rim portion by connecting members. The hand rim is arranged along the rim portion on the exterior side of the rim portion. The fastening members fasten the hand rim to the rim portion. An insertion prohibition spacing is formed between the rim portion and the hand rim. The spacing has a distance capable of prohibiting insertion of user's thumb into this spacing.

Abstract: A wheelchair including: a frame including a backrest portion; and a drive wheel attached to the frame using an axle, wherein the axle is attached below the backrest portion and is configured to have the drive wheel rotate about the axle; a front caster connected to the frame and horizontally offset from the drive wheel; and a relative positioning mechanism connected to the frame and the front caster assembly, wherein the relative positioning mechanism is configured to locate the front caster assembly at two or more positions relative to the frame along a vertical direction.

Abstract: A collapsible wheeled walker with two side frames and two height adjustable upper body supports. The apparatus includes a seat that is slidably attached to the two side frames and is movable between a front position to facilitate an ample walking space inside the frames and a rear position for a user to sit. The apparatus may include an X-folder that facilitates collapsing the walker to a small footprint for storage and transportation. It may also include a left forearm gutter and a right forearm gutter as part of the upper body supports that give the user an upright walking posture for health benefits.

Abstract: A wheelchair includes a lower assembly including a lower frame having wheels rotatably mounted thereto, an upper assembly including an upper frame supporting a seat, a backrest and at least one movable armrest, and a lift mechanism configured to move the upper assembly relative to the lower assembly between a lowered position and a raised position, wherein a user can move sideways out of the seat in the raised position with the movable armrest lowered.

Abstract: Systems and methods for providing adequate lighting and illumination for a wheelchair are disclosed. A lighting apparatus that is configured to be integrated with a wheelchair pushrim is also disclosed. The light emitting elements are configured to project light forward and to the rear, as well as to the side of the wheel. Methods of controlling light emitting elements are also disclosed.

Abstract: A wheelchair frame having a seat for supporting a forward facing occupant therein, rear wheels supporting the frame thereon proximate a rear end of the frame and front wheels supporting the frame thereon proximate a front end of the frame, further includes a front seat height adjustment mechanism which permits a height of a front end of the seat relative to the front wheels to be adjusted separately from or together with a rear end height adjustment of the rear end of the seat relative to the rear wheels. The front seat height adjustment mechanism can also be operable to lower the front seat height relative to the front wheels simultaneously with a rear seat height adjustment mechanism which is biased to raise the rear seat height relative to the rear wheels to assist users in moving from a sitting position towards a more standing position.