Embodiments of a suspension for a vehicle is provided. The suspension includes, for example, a frame and a locking assembly. The locking assembly inhibits tipping of a frame of the vehicle when tipping of the frame is detected.

A backrest fixation system (1) for a wheelchair, wherein the backrest fixation system (1) comprises a seat frame member (3) having a groove side (3a) provided with a first groove (5) having first groove retaining surfaces, which seat frame member (3) has a first lateral side (3b) and a second lateral side (3c) parallel to each other and which define lateral sides of the groove side (3a), a first groove insert member (9) arranged in the first groove (5) and retained in the first groove (5) by means of the first groove retaining surfaces, a backrest attachment member (15) having a first backrest attachment member through-opening (15a), a first fastener (17), and a reinforcement member (13) arranged between the backrest attachment member (15) and the groove side (3a) of the seat frame member (3), which reinforcement member (13) has a first leg (13a) and a second leg (13b), wherein the first leg (13a) extends along the first lateral side (3b) of the seat frame member (3) and the second leg (13b) extends along the second lateral side (3c) of the seat frame member (3), wherein the first groove insert member (9) is provided with a first groove insert member through-opening (9a) and the reinforcement member (13) is provided with a first reinforcement member through-opening (13d), and wherein the first fastener (17) extends through the first backrest attachment member through-opening (15a), the first reinforcement member through-opening (13d), and the first groove insert member through-opening (9a). An electrically powered wheelchair comprising a backrest fixation system is also presented herein.

A power add-on device for powering a manual wheelchair includes a motorized component including dual electric motors and a power source electrically coupled to the electric motors, wherein each of the motors is configured to turn a respective one of a set of drive wheels. The power add-on device can include a latching mechanism adapted to attach the power add-on device to the camber tube of the manual wheelchair; and a controller, reachable by a person sitting in the manual wheelchair, that controls the latching mechanism, the motors, and a swing arm that allows the rear wheels of the manual wheelchair to be lifted off the ground. The front wheels of the manual wheelchair are allowed to be lifted several inches off the ground to avoid obstacles, or can be lifted by the user leaning back.

A wheelchair suspension includes a frame, a drive assembly pivot arm, a drive assembly, a front caster pivot arm, a front caster, and a spring and shock absorbing assembly. The drive assembly pivot arm is pivotally connected to the frame. The drive assembly includes a drive wheel and is mounted to the drive assembly pivot arm. The front caster pivot arm is pivotally mounted to the frame and coupled to the drive assembly pivot arm. The front caster is coupled to the at least one front caster pivot arm. The spring and shock absorbing assembly is pivotally connected to the drive assembly pivot arm at a first pivotal connection and pivotally connected to the front caster pivot arm at a second pivotal connection. The first and second pivotal connections are positioned such that a majority of the force applied by the spring and shock absorbing assembly is applied to the drive wheel when the suspension is on a flat, horizontal support surface.

A powered wheelchair is operated by sensor-based control pads that include force transducers to produce a variable output signal that is proportional to a varying force applied. The control pad provides an analog-type output that provides a variable speed signal to a controller to operate the wheelchair at a variable speed in both forward/reverse directions and in right or left turning directions.

A suspension for a wheelchair, wherein the suspension comprises: a frame, a motor carrier pivotally mounted on the frame to rotate about a motor carrier axis, a drive wheel having a bottom and mounted on the motor carrier to rotate about a drive wheel axis, a swing arm pivotally mounted on the frame to rotate about a swing arm axis, a swing wheel having a bottom and mounted on the swing arm to rotate about a swing wheel axis, a first contact surface coupled to move in concert with the motor carrier, and a second contact surface coupled to move in concert with the swing arm and configured to contact the first contact surface and transfer an upward force on the swing wheel into a downward force on the drive wheel.

Provided is a moving body. A control device of the moving body starts a first control processing that moves a movement part so that a posture of a base with respect to a passenger seat becomes a predetermined posture with an auxiliary grounding part lowered and grounded. The control device starts a second control processing that lifts the auxiliary grounding part with respect to the base and a third control processing that moves the movement part 2 so as to stabilize a posture of the passenger seat after a delay from the start of the first control processing.

A powered wheelchair is operated by sensor-based control pads that include force transducers to produce a variable output signal that is proportional to a varying force applied. The control pad provides an analog-type output that provides a variable speed signal to a controller to operate the wheelchair at a variable speed in both forward/reverse directions and in right or left turning directions.

A powered wheelchair comprises a frame and an arm assembly that includes an arm that is pivotably coupled to the frame. The arm assembly includes a wheel coupled to the arm. A drive system is coupled to the arm assembly and configured to drive a drive wheel. An arm limiter is pivotably coupled to the suspension and coupled to one or more of the arm assembly and the drive system in an engaged position. The arm limiter is configured to limit movement of the arm assembly in the engaged position.

Embodiments of a suspension for a vehicle is provided. The suspension includes, for example, a frame and a locking assembly. The locking assembly inhibits tipping of a frame of the vehicle when tipping of the frame is detected.