Abstract: A twist-lock connector assembly for securing an engaged electrical plug to an electrical outlet which includes a rotatable cylindrical sleeve disposed enclosing an electrical plug and a modified cover plate for replacing the conventional cover plate of an electrical outlet, such as a wall socket or a portable power box. The forward end of the rotatable sleeve includes a plurality of external thread members. Each socket hole of the cover plate includes an inner cylindrical wall having a plurality of radially inwardly projecting nubs formed thereon. In use, the electrical plug is inserted into the socket portion of the wall outlet and the cylindrical sleeve is rotated about a ¼ turn. This causes the external threads on the rotatable sleeve to lockingly engaged the nubs disposed surrounding the socket opening(s) of the cover plate and thereby prevent the electrical plug from being accidentally pulled loose from the outlet by its connection with cover plate.

Abstract: A twist-lock connector assembly for securing an engaged electrical plug to an electrical outlet which includes a rotatable cylindrical sleeve for enclosing an electrical plug and a modified cover plate for replacing the conventional cover plate of an electrical outlet, such as a wall socket or a portable power box. The forward end of the rotatable sleeve includes a plurality of external thread members. Each socket hole of the cover plate includes an inner cylindrical wall having a plurality of radially inwardly projecting nubs formed thereon. In use, the electrical plug is inserted into the socket portion of the wall outlet and the cylindrical sleeve is rotated about a ¼ turn. This causes the external threads on the rotatable sleeve to lockingly engaged the nubs disposed surrounding the socket opening(s) of the cover plate and thereby prevent the electrical plug from being accidentally pulled loose from the outlet by its connection with cover plate.

Abstract: A twist-lock connector assembly for securing an engaged electrical plug to an electrical outlet which includes a rotatable cylindrical sleeve disposed enclosing an electrical plug and a modified cover plate for replacing the conventional cover plate of an electrical outlet, such as a wall socket or a portable power box. The prong end of the sleeve includes a plurality of radially inwardly projecting nubs provided along an inner cylindrical surface thereof. The cover plate includes an upstanding cylindrical wall disposed about a periphery of each socket access opening. A plurality of thread members are formed on the exterior surface of each upstanding cylindrical wall and which are designed to matingly engage the nubs on the inner cylindrical surface of the sleeve as the sleeve is twist-rotated over the upstanding cylindrical wall. In use, the electrical plug is inserted into the socket portion of the wall outlet and the cylindrical sleeve is rotated about a 1/4 turn.

Abstract: A locking apparatus for a standard two or three prong electrical plug connector assembly which includes a retro-fit face plate for attachment to the male plug end of the electrical connector assembly and a rotatable sleeve housing for jacketing a portion of the female socket end of the electrical connector assembly. The face plate includes a plurality of male threads provided along an outer perimeter edge thereof which threadingly engage a coordinate plurality of grooves provided to an inner wall of the sleeve housing adjacent a male plug receiving end to twist lock the two connector ends together. The sleeve housing also includes a radially inward extending notched key way at its other end which is received within a receiving slot provided to the outer periphery of the electrical outlet insulator body and which cooperates with a stop member provided to the outlet insulator body to limit lateral (rotational) travel of the sleeve housing about the outlet insulator body.