Patent ID: 8441791

Claim:
A portable device, comprising: a first housing integrated with a display device; a second housing movably coupled to the first housing, which is operable to open and close relative to the second housing, the first and second housings configurable from a closed position at approximately zero degrees)(0°) to an open position at approximately one-hundred and eighty degrees (180°); a double hinge operable to movably couple the first housing and the second housing, the double hinge comprising radial cams configured to apply a holding torque in the open position that resists the first and second housings closing; the radial cams of the double hinge comprising cam-and-follower mechanisms, one of which opens a first half of the double hinge with less applied torque before a second half of the double hinge opens, and closes the first half of the double hinge before the second half of the double hinge closes; and a cam face of a first cam follower comprising a different shape than a second cam follower, the cam face operable on a radial cam to apply the less applied torque.