US Patent 10052962 Coupling assembly for transferring electrical energy

A self-aligning motor assisted electrical Connector with exterior shape of a solid geometric form and accompanying complementary Receptacle (which when placed together form a Unit) that reduces the conventionally necessary exertion of force and dexterity requirements placed upon individuals and automated equipment, for use in transferring energy between a primary charging source and an electric vehicle or an energy storage device, such as a battery or battery bank; provided, however, that a transfer of energy may also occur by engaging such Unit so that the electric vehicle, battery or battery bank becomes the primary source of energy which transfers electric power through the Unit to an ultimate load.