Abstract: A trailer restraint positively restrains a trailer against a dock by means of the trailer ICC bar. The trailer restraint is self-aligning with an ICC bar located anywhere within its range of operation. The trailer restraint comprises a shoe that pivots on a trunnion shaft within a housing located under the trailer ICC bar. The trunnion shaft is slidable within the housing against a strong spring. A hydraulically operated slider advances to pivot the shoe until a working surface thereof contacts the trailer ICC bar. Further advancement of the slider causes the shoe to pivot about the contact point of the shoe on the ICC bar, thereby sliding the trunnion shaft until the shoe working surface is aligned with the trailer ICC bar. A lock bar received on the trunnion shaft slides therewith. A pawl engages teeth on the lock bar to prevent further sliding of the lock bar and trunnion shaft.

Abstract: A centrifugal rotary loader apparatus for a multiple tray conveyor includes a plurality of similar spirally-shaped, conical supporting surfaces, each having a radially extending pickup vane.Each supporting surface includes an inner loading cone angle of 30.degree. and an outer angle of 20.degree. for a retail merchandise warehousing system.An outer encircling guide wall has a discharge opening with a vertical trailing edge and an inclined leading edge. The load moves outwardly as a result of centrifugal forces through the opening.The rotary loader is loaded perpendicular to the direction of rotation and the tray conveyor is located beneath the loader with the center line of the trays aligned with the periphery of the loader.