A keyboard switch assembly having an apertured plate, a plurality of pushbuttons supported in the apertures and a hinge for so supporting the pushbuttons that is integral with both the panel and the pushbuttons. The hinge has a web extending between the panel and the pushbutton, and the web is formed...http://www.google.de/patents/US4055734?utm_source=gb-gplus-sharePatent US4055734 - Keyboard switch assembly with hinged pushbuttons and cantilevered terminal members
