US Patent 10290988 Electrical plug

An electrical plug comprising: a socket part (5a, 5b, 5c, 5d) having a plurality of electrical plugs configured for directly or indirectly plugging into a mains electrical socket; a device part (3) having at least one power output configured for direct or indirect coupling to an electrical device; wherein the socket part is separate and releasable from the device part, and the socket part and device part comprise respective parts of two two-part engagement formations that are engageable to physically and electrically couple the socket part to the device part.