Patent ID: 6848918

Claim:
A plug with a casing comprising: a) a round connector having: i) a round-head conductive sheet metal first end protruding from a first side of the casing; ii) a wire-inlaying second end having a first opening and protruding from a second side of the casing, the second side being opposite the first side, wherein the first opening faces in a predetermined direction; and iii) an extended sheet metal middle portion having a curved cross section and being located between and connecting the round-head conductive sheet metal first end and the wire-inlaying second end, and positioned in the casing; and b) two rectangular connectors, each rectangular connector having: i) a rectangular conductive sheet metal first end protruding from the first side of the casing; ii) a wire-inlaying sheet metal second end having a second opening and protruding from the second side of the casing, wherein the second opening faces in the same predetermined direction as the first opening; and iii) a seamless, L-shaped, extended sheet metal middle portion located between and connecting the rectangular conductive sheet metal first end and the wire-inlaying sheet metal second end, and positioned in the casing, wherein the round connector and the two rectangular connectors are spaced apart and protrude through each of the first side and the second side of the casing in a triangular configuration, the round connector is located in an upper part of the casing, and the two rectangular connectors are positioned in parallel in a lower part of the casing; wherein the L-shaped sheet metal middle portion has a radius segment that is parallel with and partially inset into the second side of the casing and extends to an outer side of the casing.