| CPC B60B 19/14 (2013.01) [B25J 5/007 (2013.01); B25J 9/1664 (2013.01); B25J 9/1697 (2013.01); B60B 19/003 (2013.01); B60B 33/08 (2013.01)] | 19 Claims |

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1. A drive system for a robot, comprising:
a robot body base including a drive wheel;
a plurality of ball casters within the robot body base, wherein the ball casters are positioned relative to the robot base and to the drive wheel so as to lower a center of gravity of the robot and provide stabilization of the driving; and
a plurality of frames mounted within the robot body base for receiving the plurality of ball casters.
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