Motor vehicles – Special driving device – Portable track
Reexamination Certificate
2004-09-15
2009-06-09
Ellis, Christopher P (Department: 3611)
Motor vehicles
Special driving device
Portable track
C180S009000, C180S009440
Reexamination Certificate
active
07543664
ABSTRACT:
A vehicle includes a motorized belt track directly or indirectly connected to a frame. The belt track frictionally contacts a drive surface on which the vehicle moves, such as any form of road or off-road surface. The belt track moves forward and backward in a direction parallel to a centerline of the belt track to move the vehicle backward and forward along the drive surface. A steering appendage is also directly or indirectly connected to the frame. The steering appendage is also adapted to frictionally contact the drive surface. The steering appendage is off the centerline of the belt track. The steering appendage causes the vehicle to turn from the centerline of the belt track when in contact with the drive surface.
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patent: 2004/0004395 (2004-01-01), Soucy et al.
Ahmad Aisha
Ellis Christopher P
Scharich Marc A
The Johns Hopkins University
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