In an electronic apparatus with a separably combining main body and expander, a pair of movable claws which are interlocked with an opening/closing lever are provided on an upper surface of the expander and a pair of fixed claws are provided on the opposite side of the opening/closing lever. A connecting...http://www.google.de/patents/US5926627?utm_source=gb-gplus-sharePatent US5926627 - Electronic apparatus for engaging a portable computer with an expansion unit
