Patent ID: 7104818

Claim:
A receptacle structure comprising a sleeve and a body inserted into an end of said sleeve, said body having slots for the insertion of prongs of a plug, said slots having electrical conducting blades inside for clipping said prongs, said electrical conducting blades connected to a power source through conducting wires extended from an end of said body opposite to said sleeve, said body having at least a locking blade partially buried inside said body and partially extended toward said sleeve, the extended portion of said locking blade bended to provide spring force against said sleeve, the extended portion of said locking blade having a slot opening that would completely align with a slot of said body when the extended portion of said locking blade is bended entirely against said body, and would displace slightly from said slot when the extended portion of said locking blade returns to a normal slant position; wherein, when a prong of a plug is inserted into a slot of said body via said sleeve and said slot opening of said locking blade, the pushing force presses the extended portion of said locking blade against said body so that said prong goes all the way into said slot via the completely aligned slot opening; and, when said prong is into said slot, the extended portion of said locking blade springs back to said normal slant position and said slot opening is slightly displaced to lock said prong.