| 主权项 |
1. An apparatus comprising:
a platform; a plurality of trucks coupled to the platform, wherein each of the trucks includes a wheel; a roller assembly coupled to the platform, wherein the roller assembly is configured for an omnidirectional rotation about a first axis, wherein the roller assembly is driven by a motor, wherein the roller assembly includes a roller rotating about a second axis, wherein the first axis is distinct from the second axis, wherein the roller assembly comprises the motor, wherein the roller assembly comprises a roller, wherein the roller extends along the motor circumferentially; and a slip ring which conducts power to the motor. |
