A portable computer with a base, a pivotal visual display and a keyboard releasably attached to the base so it can be used as a stand alone component. The base has a tapered forwardly projecting wide tongue that guides the keyboard horizontally and vertically as the keyboard moves toward the base and...http://www.google.se/patents/US4903221?utm_source=gb-gplus-sharePatent US4903221 - Keyboard latching arrangement for portable computers
