Patent ID: 8133068

Claim:
A current connection apparatus of a tank, comprising: a neck flange mounted on the tank, the neck flange having an opening into the tank; electrical connection cables in the opening for connecting the tank to an external electrical apparatus; an electrical lead having a metal flange, the metal flange having at least one opening sealed by an insulating body and having a plurality of conductors in the at least one opening, the plurality of conductors being electrically insulated relative to the metal flange; a protective casing, the electrical lead being disposed between the neck flange and the protective casing and being tightly fastened to the neck flange; a first plug body having a plurality of first plug elements corresponding in number to the plurality of conductors, the first plug body being in the opening of the neck flange so that, with the electrical lead attached to the neck flange, the electrical connection cables are electrically contacted with the plurality of conductors; and a second plug body having a plurality of second plug elements corresponding in number to the plurality of conductors, the second plug body being in the protective casing so that, with the protective casing attached to a second metal flange, the plurality of second plug elements are electrically contacted with the plurality of conductors; and wherein the plurality of first and second plug elements each comprises a receptacle, in which a respective conductor of the plurality of conductors engage.