The present invention provides a double parallelogram vertical lifting device comprising a linkage mechanism and a pushing device. The linkage mechanism comprises a first shaft seat, a second shaft seat, a third shaft seat, an upper support unit movably coupled to the first shaft seat and the second shaft seat on both ends, and a lower support unit movably coupled to the second shaft seat and the third shaft seat on both ends. The upper support unit is provided with a first gear, and the lower support unit is provided with a second gear that meshes with the first gear. The pushing device has one end set on the upper support unit and the other end set on the lower support unit. The invention utilizes the interaction of the first gear and the second gear to generate a reaction force, which enables the lower support unit to cooperate with the upper support unit to move up and down synchronously, and achieves the effect of simple structure and large load capacity.

A seat positioning system includes a base frame having a pair of forward slots and a pair of rear slots, and a seat frame having a front end and a back end. The seat frame is coupled to the base frame and movable relative to the base frame. A first pair of linkages is slideably coupled to the pair of forward slots and connects the frames. A first pair of locking devices has a locked configuration adapted to prevent the first pair of linkages from sliding relative to the pair of forward slots and an unlocked configuration adapted to allow the first pair of linkages to slide relative to the pair of forward slots. A second pair of linkages slideably is coupled to the pair of rear slots and connects the frames. An actuator is pivotally connected to both the scat frame and the base frame and is configured to extend and contract to move the scat frame relative to the base frame.

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 medical chair includes a base, a seat section, and a leg rest pivotally mounted relative to the seat and adapted to move between an extended position and a retracted position. The chair further includes a scissor mechanism coupled to the leg rest to extend and contract the leg rest and an actuator mounted on one end relative to the seat section and having an extendible driving end coupled to the leg rest wherein when the extendible driving end extends the extendible driving end pivots the leg rest about the pivot axis and extends the scissor mechanism.

A medical chair includes a base, a seat, and a leg rest pivotally mounted relative to the seat and adapted to move between an extended position and a retracted position. The chair further includes a first actuator for tilting the seat with respect to the base, a second actuator for lifting the seat with respect to the base, and a leg rest actuator adapted to move the leg rest. The chair also includes a controller adapted to control the first and second actuators to move the seat between a first position and a second position such that the seat is both lifted and tilted at the same time as the seat moves from the first position to the second position, and wherein the controller is adapted to control the leg rest actuator such that the leg rest maintains a substantially constant orientation with respect to the floor.

A bathing system, includes a transfer system having a carrier base and a transfer seat. A sliding of the transfer seat relative to the carrier base may facilitate transfer of the transfer seat toward or away from the tub. A first arm and a second arm of the carrier base extends into and overlaps with a first support surface and a second support surface of the tub respectively. A controller may be in operative communication with a plurality of sensors and determine whether the bathing system is in a state where it is permissible to transfer the transfer seat toward or away from the tub and if so, actuate components of the transfer system to permit the transfer of a patient in the transfer system.

A tracked powered chair is described. A side drive assembly comprises a powered sprocket, a forward non-powered two wheel bogey, and a rearward non-powered two wheel bogey. Each bogey has a respective pivot member pivotally fastened at a first pivot member end between the first and second bogey wheels, and a second pivot member end fastened to the frame such that the forward and rearward bogey each pivot independently from one another around its respective pivot member. The geometry of the drive assembly creates a non-isosceles shaped triangular appearance (no two sides are of equal length).

An automated adjustable seating system (10) comprising: a seat (16), the seat (16) incorporating a first sliding frame (62) and seat upholstery attached to the sliding frame (62); a backrest (20), the backrest (20) incorporating a second sliding frame (138) and back upholstery attached to the sliding frame (138); a set of actuators (106, 128, 194, 196, 198); and a control system (200). The set of actuators (106, 128, 194, 196, 198) includes an actuator for adjusting the angle of the seat (16) relative to the horizontal (194), an actuator (106) for adjusting the longitudinal position of the first sliding frame (62); an actuator (196) for adjusting the angle of the backrest (20) relative to the vertical and an actuator (198) for adjusting the longitudinal position of the second sliding frame (138). Each of the set of actuators (106, 128, 194, 196, 198) is controlled by the control system (200).

A reversible seating mechanism includes a frame and a cross member pivotally supported on the frame for rotational movement in a plane generally parallel to the frame to define a tilt angle. A mounting plate is pivotally supported on the cross member for rotational movement in a plane generally parallel to the cross member to define one of a forward and rearward facing orientation. The mounting plate is moveable on the cross member to be oriented to the tilt angle. A tilt limiter restricts movement of the mounting plate between the forward and rearward facing orientations until the tilt angle is adjusted to a preset angle. The tilt limiter limits a forward facing tilt angle to an angle less than a rearward tilt angle.

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.