Motor vehicles – Power – Electric
Reexamination Certificate
2007-05-22
2007-05-22
Bottorff, Christopher (Department: 3618)
Motor vehicles
Power
Electric
C180S907000, C280S304100
Reexamination Certificate
active
11145477
ABSTRACT:
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.
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Goertzen Gerold
Null, Jr. William A.
Bottorff Christopher
Calfee Halter & Griswold
Invacre Corp.
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