Converter plug with improved self-locking terminals to standard plug

Claim 1

A converter electric plug comprising: (a) a main cylindrical body closed at one end an exteriorily threaded at the other end, the hollow interior of said body being divided into three compartments by substantially radially extending partitions; (b) two electrodes positioned in two of said compartments, the closed end of said main body having arcuate slots therein to permit the entrance of electrodes of a standard plug to make electrical connection with said electrodes; (c) a "ground" terminal positioned in the third compartment, the closed end of said body having an L-shaped slot therein to permit the entrance of a "ground" terminal of the standard plug to make electrical connection with said "ground" terminal in said compartment; and (d) the inner surface of the closed end of said body having an arcuate rib in each compartment extending inwardly and cooperating with an inwardly extending longitudinal rib in each compartment for contacting the sides of the two electrodes and "ground" terminal therein when the electrodes and terminals contact the closed end inner surface for holding these in contact with their adjacent radially extending partition to prevent any angular shifting of the two electrodes and "ground" terminal in the compartments when the standard plug has its prongs inserted into the compartments and is rotated with respect to the main body.