A wheelchair comprising a seat back, a seat bottom, a frame, two front wheel assemblies, two drive wheels, two wheelchair wheels, and an anti-rollback wheelchair braking system consisting of two braking units, each unit comprising a housing cylinder body cap, a housing cylinder body, a housing cylinder mounting assembly, a wheelchair mounting assembly, rotatable toggle clamp direction selection lever, an anti-rollback, one-way, brake assembly, and a toggle clamp assembly for engaging the said anti-rollback, one-way, brake assembly with a wheelchair wheel. A parking brake assembly may also be included. The invention may be manufactured and sold as a whole wheelchair assembly or a retrofit kit for standard wheelchairs.

An anti-pushback mechanism for a wheelchair provides for a side mounted lever to allow the wheelchair to move in a forward motion only, a rearward motion only, or a neutral position where it can be pushed in any direction. This lever is connected to a ratcheting style gear that stops rollback when engaged. A torsion spring moves the chair forward slightly as the user stands to keep the chair close to the user and prevent falling. The invention may be provided as an add-on kit for existing wheelchairs. The kit would consist of a center axle, the ratchet gear, the torsion spring, the crossbar frame, the actuating lever, a guard for the lever, and any associated clamps and fasteners.

The present invention provides an assembly having a collapsible wheelchair and an anti-rollback assembly to brake rotational movement of the wheelchair when a user is unseated, while simultaneously maintaining the ability of the wheelchair to collapse into a storage configuration. The anti-rollback assembly may include a brake bar pivotable between a lock state and an unlock state, a biasing member engaging the brake bar to exert a biasing force to move the brake bar into the lock state, and an actuator configured to engage a seat surface of the wheelchair to move the brake bar into the unlock state when the individual occupies the seat surface.

An apparatus for moving a wheelchair, the apparatus having a base including a drive motor drivingly connected to a drive wheel and a first forwardly extending lower arm member engageable with the wheelchair when the wheelchair is in the engageable position. The first lower arm member is operable between a lowered position in which the first lower arm member is disengaged from the wheelchair and a raised position in which the first lower arm engages the wheelchair. The first lower arm member has a first stop member whereby, when the first lower arm member is in the raised position and engages the wheelchair, and when the wheelchair is on a forwardly extending declined surface, the first stop member inhibits forward motion of the wheelchair.

An apparatus for moving a wheelchair, the apparatus having a base including a drive motor drivingly connected to a drive wheel and a first forwardly extending lower arm member engageable with the wheelchair when the wheelchair is in the engageable position. The first lower arm member is operable between a lowered position in which the first lower arm member is disengaged from the wheelchair and a raised position in which the first lower arm engages the wheelchair. The first lower arm member has a first stop member whereby, when the first lower arm member is in the raised position and engages the wheelchair, and when the wheelchair is on a forwardly extending declined surface, the first stop member inhibits forward motion of the wheelchair.

A self-balancing vehicle comprising two axially spaced wheels (3, 4) mounted on a main body (2), an electric drive coupled to at least one wheel (3, 4), control means adapted to maintain the vehicle in balance by controlling the drive, a receptable for carrying and conveying a load, the vehicle having an adjustment mechanism (7) for linear displacement of the receptable arranged so that the receptable is adjustable by the linear displacement both along the longitudinal axis and along the vertical axis of the vehicle.

A manual movable body with wheels 10 which can be moved by manually rotating the wheels, comprising an upper body frame 12 supporting a heavy goods, a pair of travelling wheels 18, each of which is provided on the corresponding side of a lower body frame 14 which is not in contact with upper body frame 12, and is rotationally supported by a first horizontal rotation shaft 16 extending in the widthwise direction of the lower body frame 14, and a pair of abutting rollers, each of which is mounted on upper body frame 12, and is rotationally supported by a second horizontal rotation shaft extending in the widthwise direction of the upper body frame 12.

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.

A wheelchair comprising a seat back, a seat bottom, a frame, two front wheel assemblies, two drive wheels, two wheelchair wheels, and an anti-rollback wheelchair braking system consisting of two braking units, each unit comprising a housing cylinder body cap, a housing cylinder body, a housing cylinder mounting assembly, a wheelchair mounting assembly, rotatable toggle clamp direction selection lever, an anti-rollback, one-way, brake assembly, and a toggle clamp assembly for engaging the said anti-rollback, one-way, brake assembly with a wheelchair wheel. A parking brake assembly may also be included. The invention may be manufactured and sold as a whole wheelchair assembly or a retrofit kit for standard wheelchairs.

An automatic braking device for a manually propelled vehicle such as a standard wheelchair. The device is configured to substantially lock the wheel thus preventing the vehicle from rolling backwards when the occupantwhile attempting to exit the vehiclefor example forgets to lock a standard brake of the vehicle, thereby preventing the sometimes-serious fall of the occupant. The impeding of the backward rotation of the wheel and/or substantially preventing of the wheel from so rotating is carried out with the use of a flexible leg of the brake pad, repositionable with respect to the stationary plate of the brake pad during the wheel rotation. The device is cooperated with the wheel of the vehicle to not interfere with the intentional movement of the wheelchair in any direction, nor does it interfere with the typical locking mechanism of the standard wheelchair.