Step-Climbing Attachment for a Wheeled Chair
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Accused Products
Abstract
A step climbing attachment suitable for attachment to a wheeled chair is described. The step climbing attachment includes a chassis for mounting one or more ground engaging units, a first and a second ground engaging unit mounted to the chassis, at least one of the first and second ground engaging units adapted to move relative to the other of the first or second ground engaging units and the chassis, the relative movement being between a ground engaging position and a step-engaging support position so that in use at least one of the first and/or second ground engaging units engages a step.
30 Citations
50 Claims
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1-30. -30. (canceled)
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31. A step-climbing attachment for a wheeled chair, the attachment including:
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a wheel-mounting chassis for mounting wheels; first and second wheels mounted on the wheel-mounting chassis for rotation about their axes; at least one of the first and second wheels adapted to move relative to the other of the first or second wheels, the relative movement in use being between a ground engaging position and a step-engaging position so that in use at least one of the first or second wheels engages a step; and link arms connected to the chassis so as to mount at least the first wheel and swing the wheel from the ground engaging position to the step-engaging position. - View Dependent Claims (32, 33, 38, 39, 41, 42, 44, 45, 46, 47, 48, 49, 50)
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43. The step-climbing attachment in accordance 32 wherein a motor is provided to facilitate rotation of the stub axle for steering control in response to operator input.
Specification