Embodiments of the present disclosure include a wheelchair configured to reposition an occupant between a lowered and a raised position. The wheelchair can include a frame, a seat moveable relative to the frame, a drive wheel, and one or more pairs of arm assemblies. The arm assembly includes a wheel configured to move from a first spatial location when the wheel chair is operating on flat, level ground to a second spatial location that is different than the first spatial location. Arm limiters can selectively engage the arm assembly based on at least one of a seat position, position of the arm assembly and surface conditions of ground surface. The arm limiters can limit the range of motion of the arm assembly and sometimes other operational aspects of the chair.

The present disclosure relates to a wheelchair comprising a wheel axle (1) having a wheel axle end portion (9) and hub (3) having a central through-opening (11) arranged to receive the wheel axle end portion (9). The wheel axle end portion (9) has an external surface having three chamfered faces (3a, 3b), each chamfered face (3a, 3b) defining a planar surface, and the hub (3) has inner walls (13a, 13b, 13c) defining the central through-opening (11). The inner walls (13a, 13b, 13c) are arranged to engage with the chamfered faces (3a, 3b) of the wheel axle end portion (9) to prevent relative rotation between the hub (3) and the wheel axle (1).

The present disclosure relates to a chassis arrangement (1) for an electrically powered wheelchair (35). The chassis arrangement (1) comprises a main chassis member (3) having a first side panel (3a) defining a first side of the main chassis member (3), and a second side panel (3b) defining a second side of the main chassis member (3), the second side being opposite to the first side, wherein each of the first side panel (3a) and the second side panel (3b) has spring attachment arrangements (3g, 3h) for attachment of spring assemblies (9a, 9b, 11a, 11b), wherein each of the first side panel (3a) and the second side panel (3b) has pivot arm attachment arrangements (3e, 3f) for attachment of pivot arms (5a, 5b, 7a, 7b), wherein the main chassis member (3) has a torsional stiffness greater than 1200 Nm/degree. An electrically powered wheelchair comprising a chassis arrangement (1) is also presented herein.

A cart or conveyance for a person uses a two wheeled electric hoverboard as a drive unit. A clamp is positioned about the center of the hoverboard to enable the hoverboard to be retained by the clamp while remaining rotatable within the clamp. The clamp is hitched to a drawbar, which is in turn connected to an axle supporting two wheels. A seat is attached to the drawbar and axle, and positions a rider to place their feet upon the hoverboard in order to operate the hoverboard.

The invention relates to an adjustment device for vehicle seats, in particular for power driven wheelchairs or rehabilitation vehicles, comprising at least one mounting plate and one bearing plate with a lifting device. In order to allow for an individual adjustment of the seat, the lifting device consists of two to four scissor fittings, which are adjustable in height by driving means. Depending on the height setting of each scissor fitting, a lateral inclination or a tilting forwards or backwards can be achieved in addition to the lifting and lowering.

The travelling apparatus according to exemplary embodiments includes front wheels, which are driving wheels, an upper frame, first linear motion mechanisms configured to be extendable and retractable and couple the front wheels to the upper frame, middle wheels configured to be disposed at a back of the front wheels, second linear motion mechanisms configured to be extendable and retractable and couple a riding part to the middle wheels, rear wheels configured to be disposed at a back of the middle wheels, lower links configured to couple the middle wheels to the rear wheels, respectively, rear links configured to couple the lower links to the upper frame, and a third linear motion mechanism configured to change an angle between the upper frame and the rear links.

Embodiments of the present disclosure include a wheelchair configured to reposition an occupant between a lowered and a raised position. The wheelchair can include a frame, a seat moveable relative to the frame, a drive wheel, and one or more pairs of arm assemblies. The arm assembly includes a wheel configured to move from a first spatial location when the wheel chair is operating on flat, level ground to a second spatial location that is different than the first spatial location. Arm limiters that can selectively engage the arm assembly dependent on the position of the arm assembly and surface conditions of ground and can limit the range of motion of the arm assembly and sometimes other operational aspects of the chair.

A chair-drive interface assembly is for use with a wheelchair assembly having a first chair-connection member and a second chair-connection member, and also for use with a drive assembly including a wheel assembly, a motor assembly, a drive-connection member and a steering assembly. The chair-drive interface assembly has a first connection member configured to be fixedly attached to the first chair-connection member. The chair-drive interface assembly also has a second connection member configured to be fixedly attached to the second chair-connection member. The second connection member is spaced apart from the first connection member. The chair-drive interface assembly also has a third connection member configured to be fixedly attached to the drive-connection member of the drive assembly.

A system for a motorized mobile chair includes a human machine interface (HMI) to receive one or more user inputs, transmit one or more first control instructions in response to the one or more user inputs, receive one or more second control instructions, and provide haptic feedback through the human machine interface to assist user navigation of the motorized mobile chair in response to the one or more second control instructions. One or more sensors generate sensor data about an area proximate to the motorized mobile chair. At least one processor receives the one or more first control instructions, receives the sensor data from the one or more sensors about the area proximate to the motorized mobile chair, determines one or more states of the motorized mobile chair based on the sensor data, generates the one or more second control instructions based on at least the one or more states of the motorized mobile chair and the one or more first control instructions, and transmits the one or more second control instructions to the human machine interface.

The invention relates to a powered wheelchair (100, 200) for transporting a person comprising a seat frame (40) for supporting the person, a pair of opposing drive wheel assemblies (20, 30) configured to drive said powered wheelchair (100, 200) and connected to the seat frame (40), and a supporting wheel assembly (50) arranged spaced apart from the pair of opposing drive wheel assemblies (20, 30) and connected to the seat frame (40). The pair of opposing drive wheel assemblies (20, 30) comprising a first drive wheel assembly (20) and a second drive wheel assembly (30). The first drive wheel assembly (20) includes a first driving wheel (24) having a first rotation centre (R.sub.1) and operatively connected to a first rotation mechanism (26) via a first linkage member (28), said first rotation mechanism (26) is operable to rotate said first drive wheel assembly about a first pivot point (P.sub.1), wherein said first rotation centre is offset from said first pivot point. The supporting wheel assembly (50) includes a supporting rotatable wheel (54) having a third rotation centre (R.sub.3) and operatively connected to a third rotation mechanism (56) via a third linkage member (58), said third rotation mechanism (56) is operable to rotate said supporting wheel assembly (50) about a third pivot point (P.sub.3), wherein said third rotation centre (R.sub.3) is offset from said third pivot point (P.sub.3). The invention also relates to a method for operating a powered wheelchair.