Land vehicles – Wheeled – Tiltable vehicles – stabilized by attendant or article
Reexamination Certificate
2003-07-03
2009-08-04
Ellis, Christopher P (Department: 3618)
Land vehicles
Wheeled
Tiltable vehicles, stabilized by attendant or article
C280S047200, C280S047260, C280S293000, C190S01800A
Reexamination Certificate
active
07568709
ABSTRACT:
Apparatus and methods are disclosed for passive stabilization of a wheeled object by employing secondary wheels rotating about secondary axes offset from a common axis of a primary set of wheels, where the secondary wheels are positioned such that tilting of the object during rolling causes one of the secondary wheels to contact the surface and counteract tilting tendencies. The offset of the secondary axes can include angular, vertical, and/or horizontal components.
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Coolman Vaughn T
Ellis Christopher P
Engellenner Thomas J.
Massachusetts Institute of Technology
Nutter & McClennen & Fish LLP
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