Overhead cabinet with rotating door

An overhead storage cabinet having an upwardly movable door, said cabinet comprising:

• a top wall, a bottom wall and first and second opposed, parallel side walls;
• a door having opposed top and bottom edges and opposed side edges;
• a pair of pivot arm means for moving said door between a closed position and a fully open position situated above said cabinet each pivot arm means having a disk portion, a protrusion perpendicularly adjacent to said disk portion and an elongated arm portion extending outwardly from said disk portion and having a mounting bracket at its far end opposite said disk portion, said disk portion being rotatably mounted about its center to one of said side walls, and said elongated arm portion being secured to said door;
• and
• a pair of force means coacting with said pivot arm means for moving and counterbalancing said door as said door moves between said closed and fully open positions, each of said force means comprising a reciprocable piston and cylinder constructed and arranged to move said door to its open position without assistance once movement of said door is initiated, one end of said piston and cylinder being pivotally connected to said protrusion on said pivot arm means and the other end of said piston and cylinder being pivotally connected to said side wall, whereby when said door is in said closed position, said reciprocable piston and cylinder is only slightly offset from said center of said disk portion of said pivot arm means and when said movement of said door is initiated to cause said door to move to said open position, said protrusion at which said piston and cylinder is pivotally connected to said pivot arm means moves slightly forward toward said door, thereby redirecting the force generated by said reciprocable piston and cylinder to be essentially tangential to said disk portion of said pivot arm means thus permitting said door to move for the remainder of its travel solely under the force generated by said force means.