Abstract: A cabinet door collapses and slides into a concealed position inside a door compartment of a cabinet. The door has a first wing which is pivotally connected to a second wing and to a vertical door-supporting bar which travel insides the door compartment. The second wing is guided by carriages running in upper and lower continuous guideways that extend inside the door compartment. A device for moving the door-supporting bar includes a stationary toothed belt inside the door compartment, a toothed wheel and guide pulleys carried by the door-supporting bar. The toothed wheel is operatively connected to a torsion spring inside the door-supporting bar. A locking device locks the toothed wheel, when the door wings are in a coplanar closed position, and releases the toothed wheel, when they are in a parallel open position.

Abstract: A cabinet door collapses and slides into a concealed position inside a door compartment of a cabinet. The door has a first wing which is pivotally connected to a second wing and to a vertical door-supporting bar which travel insides the door compartment. The second wing is guided by carriages running in upper and lower continuous guideways that extend inside the door compartment. A device for moving the door-supporting bar includes a stationary toothed belt inside the door compartment, a toothed wheel and guide pulleys carried by the door-supporting bar. The toothed wheel is operatively connected to a torsion spring inside the door-supporting bar. A locking device locks the toothed wheel, when the door wings are in a coplanar closed position, and releases the toothed wheel, when they are in a parallel open position.