Wheeled vehicles, such as wheelchairs, that are adapted to traverse obstacles are provided. The wheeled vehicles include a frame, drive wheels, front anti-tip wheels positioned in front of the drive wheels and rear anti-tip wheels positioned behind the drive wheels. One exemplary vehicle includes front anti-tip wheels supported by rigid arms that are fixed to the frame and drive assemblies that are independently suspended from the frame. Another exemplary vehicle includes a linkage that links the front and rear anti-tip wheels, such that movement of one of the front or rear anti-tip wheel relative to the frame causes movement of the other wheel relative to the frame.

A support device includes a base member, a caster assembly coupled to the base member including a caster pivotally coupled to the base member, at least two planar members positioned above the caster and pivotally coupled to one another by at least two opposing hinges, and a shaft positioned between the at least two opposing hinges and extending through the at least two planar members.

A patient transfer apparatus is provided and includes a frame, a seat assembly coupled to the frame, and a track assembly coupled to the frame. The track assembly includes a moveable track for traversing stairs and a motor configured to drive the track. The apparatus further includes a control system. The control system includes a controller configured to control the motor and to adjust a speed of the apparatus based on an occupancy of the seat assembly upon traversing the stairs based on a current to the motor upon traversing stairs.

A barrier overcoming method for a mobile assistive device is disclosed. The barrier overcoming method includes sensing a surrounding environment of the mobile assistive device; determining whether a dangerous terrain exists in the surrounding environment of the mobile assistive device; determining whether the dangerous terrain belongs to a conquerable obstacle when the dangerous terrain exists in the surrounding environment around the mobile assistive device; and adjusting a status of the mobile assistive device to overcome the dangerous terrain when the dangerous terrain belongs to a conquerable obstacle.

A barrier overcoming method for a mobile assistive device is disclosed. The barrier overcoming method includes sensing a surrounding environment of the mobile assistive device; determining whether a dangerous terrain exists in the surrounding environment of the mobile assistive device; determining whether the dangerous terrain belongs to a conquerable obstacle when the dangerous terrain exists in the surrounding environment around the mobile assistive device; and adjusting a status of the mobile assistive device to overcome the dangerous terrain when the dangerous terrain belongs to a conquerable obstacle.

A driving wheel includes: a first disc provided to be rotatable with respect to a rotary shaft; a second disc provided to be rotatable with respect to the rotary shaft; a plurality of spokes each protruding outward and each having a first side rotatably coupled to the first disc and a second side rotatably coupled to the second disc; a first motor to rotate the first disc; and a second motor to rotate the second disc

A driving wheel includes: a first disc provided to be rotatable with respect to a rotary shaft; a second disc provided to be rotatable with respect to the rotary shaft; a plurality of spokes each protruding outward and each having a first side rotatably coupled to the first disc and a second side rotatably coupled to the second disc; a first motor to rotate the first disc; and a second motor to rotate the second disc

A transportation device and an automatic tilt stabilizer are disclosed herein. The transportation device has a structure with wheels joined by a shaft to a platform or chassis configured to support a basket, a mat, a seat and/or a tray. The automatic tilt stabilizer is configured to automatically stabilize the inclination of the platform or chassis, and includes a tilt sensor configured to detect an inclination of the platform or chassis, and a motor activated by a microcontroller configured to correct the inclination of the platform or chassis, so that the platform or chassis returns to a predefined inclination.

A first transport apparatus includes a deck for supporting a patient thereon and a lift mechanism supporting the deck. The deck is removable from the lift mechanism for use as a second transport apparatus or part of a second transport apparatus. The first transport apparatus further includes an electrically powered device at the first transport apparatus, and a user input device for wireless control of the electrically powered device, which is operable at or near the first transport apparatus and the second transport apparatus.

A motorized vehicle may include a frame, a drive wheel coupled to the frame, a motor operatively coupled to the drive wheel, and an anti-tip assembly including a first anti-tip wheel. The anti-tip assembly may have a first configuration wherein the first anti-tip wheel is both pivotable about a pivot axis relative to the frame and translatable along a sliding axis.