Step-climbing attachment for a wheeled chair
AssigneeMobility 2000 (Australia) Limited
InventorMichael Behrens
Life of this patent
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Abstract
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.
Claims10
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 and a controllable motor configured to independently actuate the extending arm between the first position and the second position;
- wherein the controllable motor is housed at least partially within the inner region of the first wheel;
- and
- wherein the second wheel is driven by rotation of the first wheel.
Dependencies are inferred from the claim text.