Abstract: A cover plate having a back surface defining a covered M groove is presented. The cover plate M groove is hooked over one screw of an electrical wiring device. The second screw then screws into the cover plate and sits deep in the cover plate screw groove. A decorative cover or plug then covers the second screw, so that no screw shows on the front surface farthest from the wall after installation and the cover plate is securely coupled to the wall by the installation of only one mounting screws, rather than two as required by prior art cover plates.

Abstract: A rotatably adjustable two magnet door latch system is presented. Ferro magnetic latching means are normally coupled to the edge of a door stop. A multi-part door latch assembly is coupled to the edge of the door adjacent the stop when the door is closed.The assembly comprises a first thin magnet having a straight edge and an opposite concave edge. A second generally planar thin magnet has a first convex edge of radius equal to and fitting into the concave edge of the first magnet. Rotating means rotate the second magnet. Magnetic flux is a function of the length of arcs of the magnets that are adjacent. One or more flux plates transmit flux from the magnets to the stop and a housing modularizes the assembly for easy installation and protection against dirt.