| CPC A61G 5/1078 (2016.11) [A61G 5/047 (2013.01); A61G 5/1089 (2016.11); B60G 3/145 (2013.01); B60G 21/045 (2013.01); B60G 2204/421 (2013.01); B60G 2300/24 (2013.01)] | 19 Claims |

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1. A mobility vehicle comprising:
a frame having a bottom surface;
a stiffening assembly coupled to the bottom surface of the frame and having a stiffening axis extending from a left side of the frame to a right side of the frame;
a first pivot arm coupled to the stiffening assembly and to a drive wheel; and
a second pivot arm coupled to the stiffening assembly and a caster wheel,
wherein the first pivot arm and the second pivot arm are each pivotable relative to the stiffening assembly about respective pivot axes that are parallel to the stiffening axis.
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