Patent ID: 6845005

Claim:
A portable computer configurable in a tablet configuration, a laptop configuration, and a closed configuration, said portable computer comprising: a display unit having a display device and a back surface; a base unit having a primary input device and a bottom surface; and a hinging assembly coupling said display unit to said base unit, said hinging assembly having a first hinge with a first axis of rotation and a second hinge with a second axis of rotation, wherein said back surface of said display unit is in contact with said bottom surface of said base unit when said portable computer is in said tablet mode, said primary input device and said display device are between said back surface of said display unit and said bottom surface of said base unit when said portable computer is in said closed configuration, one of said first hinge and said second hinge is rotated to reconfigure said portable computer between said closed configuration and said laptop configuration, said first hinge and said second hinge are rotated to reconfigure said portable computer between said closed configuration and said tablet configuration, and a first friction force resists rotation of said first hinge about said first axis of rotation, a second friction force resists rotation of said second hinge about said second axis of rotation, and said first friction force is of a smaller magnitude than said second friction force.