Patent ID: 7530582

Claim:
A vehicle comprising: a structural frame; a rider support platform supported by the structural frame; a pair of first wheel units pivotably supported by the structural frame, each first wheel unit comprising a first wheel; a pair of second wheel units supported by the structural frame, each second wheel unit comprising a second wheel; a first handlebar pivotably supported by the structural frame so that the first handlebar is pivotable relatively to the structural frame in opposite first and second directions; a second handlebar pivotably supported by the structural frame so that the second handlebar is also pivotable relatively to the structural frame in the first and second directions; a first linkage connecting the first handlebar to one of the first wheel units so that pivotable movement of the first handlebar causes the first wheel of the one of the first wheel units to turn relatively to the structural frame; a second linkage connecting the second handlebar to the other of the first wheel units so that pivotable movement of the second handlebar causes the first wheel of the other of the first wheel units to turn relatively to the structural frame; and a movement coordinator which connects the first and second linkages to each other so that pivotable movement of one or both of the first and second handlebars in the first or second direction causes the first wheels to turn in the same directions, wherein pivotable movement of the first and the second handlebar in opposite directions causes each of the wheels in the pair of first wheel units to point in opposite directions in a toe-in configuration causing a braking action in a relatively straight line.