Electric plug

Claim 1

An electric plug for use at the end of an electric cord, comprising a base and cover each comprised of an electrically insulating material, the base including first and second end surfaces and having opening means therebetween for an electrical cord, two conductor prongs extending from the second end surface, the cover comprising a tubular wall, an open end, and an opposite closed end wall which end wall has prong-receiving apertures, the tubular wall enclosing the base with the closed end wall adjacent to the second end surface and with the prongs extending through the apertures, the first end surface closing the open end of the cover, locking means between the base and cover for holding the body and cover together, cord-gripping means mounted on the first end surface and comprising post means and cord clamping means, the post means extending from and being integral with the base, the cord-gripping means comprising a pair of cord-clamping member attached to the post means and having interengaging means between the clamping members for gripping an electric cord, and the base and the cord-clamping members comprise interfitting keys and keyways to prevent excessive twisting of the cord.