A cover plate for completing the enclosure of an outlet box, the plate having a mounting screw retaining and aligning assembly integrally formed in an aperture in the plate. This assembly engages and aligns the screw so that the screw will not inadvertently fall out of the plate and the longitudinal...http://www.google.de/patents/US4355198?utm_source=gb-gplus-sharePatent US4355198 - Screw retaining and aligning cover plate
