US Patent 8680394 Universal cover plate assembly

A cover plate assembly and an electrical box are provided for mounting one or more electrical wiring devices. The cover plate assembly can be modified to provide a single gang, double gang or triple gang assembly for mounting the wiring devices. The cover plate assembly includes a collar forming a mud ring having at least one removable portion which can be removed to form an open side of the collar. An adapter is attached to the cover plate assembly at the open side of the collar to enlarge the dimensions of the collar to receiving a plurality of electrical wiring devices.