This 6 bar mechanism enables the hinge to rotate 180 deg..
It contains 5 movable links, 5 revolution joints and 2 prismatic joints.
At close position the hinge is not seen from outside.
It is used for cabinet doors.
STEP files of this video:
http://www.mediafire.com/file/cw4l6cz...
Inventor files of this video:
http://www.mediafire.com/file/az9h0dt...