US Patent 10146271 Expansion planar coupling system

An expansion planar system includes an expansion planar mounted to an expansion planar chassis and including expansion component(s) coupled to a system connector. A coupling subsystem mounted to the expansion planar chassis couples to a system chassis that includes a main planar and an expansion connector. While coupled to the system chassis, the coupling subsystem may provide the expansion planar chassis in a first orientation in which the system connector engages the expansion connector and the expansion planar chassis impedes access to component(s) on the main planar. While coupled to the system chassis, the coupling subsystem may also provide for rotation of the expansion planar chassis relative to the main planar to disengage the system connector from the expansion connector and provide the expansion planar chassis in a second orientation in which access to the component(s) on the main planar is no longer impeded by the expansion planar chassis.