The present invention provides a curb-climbing wheelchair having pivotal arm
assemblies. The pivotal arm assemblies include at least one front caster and have
the ability to rotate or pivot. The pivot arms rotate or pivot in response to moments
generated by accelerating or decelerating the wheelchair thereby raising or lowering
the front caster(s) through the rotational movement of the pivot arms. By raising
or lowering the front caster(s) in such a manner, curb-like obstacles can be traversed
in a low-impact manner.
