US Patent 11345248 Water check valve adapter

A charging inlet for an electric vehicle (EV) includes a body defining a socket housing a conductive charging terminal, and a flange extending from the body and defining an interior channel in fluid communication with the socket. A valve assembly of the inlet includes a cap or adapter body removably attachable to the flange. The cap defines an interior space in communication with the interior channel of the flange with the cap attached to the flange. The valve assembly further includes at least one sealing valve, such as an umbrella valve, attached to an exterior of the cap and adapted to permit the passage of fluid from the interior space of the cap to an external environment.