Step-climbing attachment for a wheeled chair
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United States of America Patent
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Aug 6, 2019
Grant Date -
Feb 1, 2018
app pub date -
Feb 16, 2016
filing date -
Feb 16, 2015
priority date (Note) -
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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.
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