Sliding door assembly

A sliding door assembly comprising a door, a door frame having a door opening, a horizontal rolling track fixed parallel to the frame above said door opening, a suspension member movably mounted along the track, a door supporting unit mounted at the top of said door, a lever pivotally connected at its upper end to said suspension member and at its lower end to said door supporting unit whereby the door is suspended from said suspension member for movement along the track, said lever being pivotable between a first position in which the door is lowered and applied against the frame and a second position in which the door is raised and spaced from the frame, and means for moving the lever from its second to its first position in response to movement of the door along the track into closed position and from its first to its second position in response to movement of the door along the track from said closed position to open position, said means for moving said lever comprising a cam track fixed in relation to the frame, linkage means pivotally connected with said door supporting unit and comprising a movable cam follower member, a roller carried by said cam follower member and engageable with said cam track to pivot said lever from said first position to said second position and means for guiding said cam follower member to move obliquely upwardly and outwardly from said frame while restraining any swinging movement of the door.