US Patent 7832058 Swivel hinge assembly for foldable electronic device

An exemplary swivel hinge assembly (10) includes a bracket (12), a hinge mechanism (14), a hinge follower mechanism (16), and a swivel mechanism (18). The hinge mechanism (14) and the hinge follower mechanism (16) are configured to provide the swivel hinge assembly (10) with rotation about a first rotational axis. The hinge mechanism (14) includes a first pivot shaft (154), a first connecting member (142), a positioning ring (146), a ring follower (144), an elastic member (148), a cam (150), and a cam follower (152). The hinge follower mechanism (16) includes a second connecting member (162) and a second pivot shaft (166). The swivel mechanism (18) is connected to the bracket (12) and configured to provide the swivel hinge assembly (10) with rotation about a second rotational axis.