Abstract: A multipurpose electric adapter is disclosed to include a housing holding two main metal power lead frames and a main metal grounding lead frame near a bottom side and two supplementary power lead frames and a supplementary grounding lead frame respectively connected to the main metal power and grounding lead frames at the top, a back plate fastened to the back side of the housing with the power and grounding prongs disposed in contact with the main metal power and grounding lead frames and extended out of the housing for connection to an electric outlet, and a faceplate covered on the front side of the housing, the faceplate having plug terminal insertion holes corresponding to the main metal power and grounding lead frames and the supplementary metal power and grounding lead frames for receiving any of a variety of electric plugs used in different countries around the world.

Abstract: A multi-voltage multi-pole safety electric adapter is constructed to include a socket unit, the socket unit having a first set of plug holes for receiving a low voltage plug and a second set of plug holes for receiving a high voltage plug, and a first set of metal contacts and a second set of metal contacts respectively disposed at a back side wall thereof, a low voltage plug unit and a high voltage plug unit alternatively fastened to the back side wall of the socket unit for receiving a low voltage power supply from or high voltage power supply from an electric outlet, the low voltage plug unit having a set of metal contacts corresponding to the first set of metal contacts at the socket unit, the high voltage plug unit comprising a set of metal contacts corresponding to the second set of metal contacts at the socket unit, and a transformer installed in the socket unit for converting low voltage input power supply or high voltage input power supply into the desired power level.

Abstract: A universal electric adapter includes a casing injection-molded from plastics, the casing having a front face panel, two lateral receiving chambers, a middle receiving chamber, a locating groove inside the middle receiving chamber, a plurality of coupling flanges radially inwardly disposed around a rear open side thereof, a positioning projection radially inwardly suspended in the rear open side, and two locating grooves bilaterally disposed at the periphery thereof; two metal contact frames respectively installed in the lateral receiving chambers the metal contact frames each having a protruded contact strip; a grounding frame installed in the middle receiving chamber, the grounding frame having a contact base, and a locating flange fastened to the locating groove inside the middle receiving chamber; a plug member fastened to the rear open side of the casing, the plug member having a plurality of metal prongs adapted for fastening to an electric socket, a plurality of coupling grooves spaced around the perip

Abstract: A combination electric connector includes a socket unit and a plug unit, the socket unit having a set of plug blade receiving holes extended through a front side thereof for receiving the metal blades of an electric plug, two grounding prong receiving portions disposed at two opposite lateral sides thereof for receiving the grounding prong or grounding wire of an electric plug, a substantially U-shaped grounding metal plate installed in the grounding prong receiving portions and extended over a rear side thereof, two metal contact plates respectively mounted in the plug blade receiving holes and extended out of the rear side, the plug unit having a plurality of hooks and coupling flanges respectively fastened to the rear side of the socket unit, and a set of metal rod members respectively disposed in contact with the metal contact plates for connection to an electric socket.