Abstract: A hidden, corner hinge assembly for a display case includes: (a) a fixed, inner rail with an interior space with an opening, (b) a movable, door rail with a semi-enclosed, interior space with a opening that is adapted to allow the adjoining fixed, inner rail to pass into and out of this opening when the display case's door moves between closed and open positions, (c) inner rail posts mounted within the semi-enclosed, interior spaces, (d) a first and a second link, each with an end that rotatably attaches to a rail post in each of the semi-enclosed, interior spaces, and (e) wherein the locations of the post mountings and the configurations and lengths of the link are set so as to allow the display case's door to open by moving inward and away from the vertical edge where the hinge assembly is being used.

Abstract: A hinge for supporting a heavy door on a support. The hinge has a main block mounted on the support and a pair of parallel plates mounted on the door. An extender link and a rotation control link are each pivotally mounted to the main block and between the parallel plates. When the door is in the fully closed position, the main block supports the upper parallel plate. When the door is in the fully opened position, the extender link is interlocked with the rotation control link and supports the door. A compressible seal is formed between the door and the support by a sealant disposed about the perimeter of the door. The compressible seal is not exposed to shear forces.