A magnetically coupled switch that utilizes a flex armature has a user manipulated holder that carries at least one magnetic coupler made of magnetic material. The flex armature is a substantially flat piece of flexible magnetic material that is magnetically attracted to the at least one magnetic coupler....http://www.google.se/patents/US20030214374?utm_source=gb-gplus-sharePatent US20030214374 - Flex armature for a magnetically coupled switch
