Disclosed are a swing-type portable digital communication terminal and a swing hinge device thereof. The portable digital communication apparatus comprises a main housing; a swing housing, which is in contact with the main housing in an initial state of the swing housing, the swing housing having a free...http://www.google.de/patents/US7295428?utm_source=gb-gplus-sharePatent US7295428 - Swing-type portable digital communication apparatus and swing hinge device thereof
