The present invention relates to moving apparatus based on bearing points created by ends of lever arms with changeable length. The lever arm comprises two main components: body and end of lever arm. Lever arm body moves spirally or pendulously around the axis which is different from its axis, end of lever arm moves in and out along the lever arm body. The combination of movement of body and end of the lever arm creates bearing points of the apparatus on the terrain, thus creating capability to overcome barricades of the apparatus. Moreover, the combination of these two movements, when following appropriate principles, creates equilibrium for the frame of the apparatus on various terrains.

The present invention relates to an electric wheelchair having a voice recognition drive system comprising: a traveling apparatus main body unit which has a plurality of wheels in a lower end thereof; a seating unit which is installed in an upper end of the traveling apparatus main body unit so as to be able to be lifted; an auxiliary robot leg unit which is able to be inserted into and protrude from the traveling apparatus main body unit, and which includes multi-joint driven by an external force; and a voice recognition drive unit which extracts a preset command from an externally input voice, and which drives the plurality of wheels, lifts the seating unit, and drives the auxiliary robot leg unit.

A step-climbing attachment for a wheeled chair, the attachment comprising a first wheel having at least a hub and a rim spaced from the hub, the hub and rim defining an inner region, a second wheel having a different diameter than the first wheel, and the second wheel being rotatably mounted to an extending arm, the extending arm being movable relative to the first wheel between a first position and at least one second position by a controllable mechanism, wherein the controllable mechanism is housed at least partially within the inner region of the first wheel, wherein the second wheel is driven by rotation of the first wheel.

The present invention relates to a curb climbing system for a wheelchair having a pair of rear larger drive wheels, a pair of small caster wheels, and a static hand grip for a caregiver being located at a back region behind an occupant seat; the system comprises: (1) a rear rollover-climb lever mechanically linked to a pivot to permit the caregiver located at the back-end region of the wheelchair to apply a downwards forceful thrust sufficient to shift the lever from an upward-position to a downward-position; and (2) a mechanical torque engagement system to translate the downwards forceful thrust to a rollover rotation torque around a pivot point on a stair-like curb, to climb over the stair-like curb. During climb procedure, a ratchet system provides unidirectional backwards rotation of the rear wheel pair and prevents forward rotation to block the wheelchair from rolling down the stairs for safety.

Vehicle for driving up stairs or a ramp, whereby the vehicle can be operated in one of the following operating modes: a first operating mode, intended for a substantially flat surface, in which one or more wheels (3, 4) are driven, a second operating mode, which is intended for driving up stairs or a ramp, in which a crawler track (5) is driven, a third operating mode in which the height of a support for carrying and transporting a load is adjustable and the vehicle is supported on the crawler track (5) and a support wheel (10, 11), whereby the vehicle has: at least one first linear motor (7) for adjusting the crawler track (5), a second linear motor (8) for adjusting the support wheel (10, 11), a lifting mechanism on which the first linear motor (7) and the second linear motor (8) are arranged, and a spring arranged on the lifting mechanism to relieve the first linear motor (7) and/or the second linear motor (8).

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.

A wheelchair curb-climbing and curb-descending system for aiding a wheelchair to negotiate a curb. The system includes a wheelchair attachment mechanism; a pair of front arms adapted to extend to lift a front portion of wheelchair and to retract back to lower the front portion of the wheelchair; a pair of rear arms adapted to extend to lift a rear portion of wheelchair and to retract back to lower the rear portion of the wheelchair. The system further includes an arm extending mechanism for extending/retracting the arms; a rotatable lifting-arm wheel at free ends of each arm; a wheel motor for rotating the arm wheels; an operation control unit; and a leveling mechanism for ensuring the seat of the wheelchair remains substantially level to the ground during operation of the system.

A transport device includes a load carrying body, at least one central walking element, a first side walking element and a second side walking element, wherein the at least one central walking element is arranged in-between the two side walking elements. The walking elements are arranged at the load carrying body in a manner to be capable of moving up and down with respect to the load carrying body. The walking elements are arranged at the load carrying body in a manner to be capable of moving back and forth in horizontal direction with respect to the load carrying body, wherein the two side walking elements can move back and forth independently from the at least one central walking element via horizontal actuators.

A drive assembly is provided and includes a rotatable housing, a motor disposed within and to rotate with the housing, the motor including a drive element and first and second drive shafts, which are independently rotatably drivable by the drive element, a first drivable element coupled to the first drive shaft such that rotation thereof is transmitted to the first drivable element and configured to propel the housing in a first direction during first drive shaft rotation and a second drivable element coupled to the second drive shaft such that rotation thereof is transmitted to the second drivable element and configured to propel the motor in a second direction, which is transversely oriented relative to the first direction, relative to the housing during second drive shaft rotation.

A device comprising: a hollow sleeve; and a leg slidable in the sleeve; the leg having a retracted position in the sleeve and an extended position in the sleeve, the leg having one or more auxiliary wheels or a continuous track at an end of the leg; the device being configured for attachment to a wheelchair between a front wheel of the wheelchair and a back wheel of the wheelchair.