Low headroom telescoping bridge crane system

A system for suspending a load over a floor, said system comprising a first, second, third, and fourth elongated, enclosed, hollow tracks, plural elongated cross members, a plurality of trucks, and a plurality of generally U-shaped hangers, each of said tracks including a longitudinally extending slot, each of said hangers having a downwardly extending leg, an intermediate section and an upwardly extending leg, said first and second tracks being disposed parallel to each other over the floor, said third and fourth tracks being disposed parallel to each other and interconnected by at least one of said cross members to form a runway frame, a first one of said trucks being located within said first track and arranged to move along the interior of said first track, a second one of said trucks being located within said second track and arranged to move along the interior of said second track, said first truck being connected to said downwardly extending leg of a first of said hangers, with a portion of said first hanger passing through said slot in said first track, said upwardly extending leg of said first hanger being connected to said third track to support said third track beside and parallel to said first track, said second truck being connected to said downwardly extending leg of a second of said hangers and an elongated bridge member adapted to have the load coupled thereto for suspending the load over the floor, said elongated bridge member being connected between said third and fourth tracks, with a portion of said second hanger passing through said slot in said second track, said upwardly extending leg of said second hanger being connected to said fourth track to support said fourth track beside and parallel to said second track, whereupon said runway frame is disposed horizontally between said first and second tracks and can be slid in a horizontal plane from a retracted position to an extended position and vice versa.