Abstract: A cover system (10) for an open-topped container, such as a transfer trailer (T), includes a cover (11) carried by a support frame (13) pivotably mounted to the container. The support frame includes a triangular construct (20) at the opposite ends of the container to improve the rigidity of the cover system. A continuous drive shaft (28) extends along the length of the container and is connected to the support frame. A drive assembly (15) rotates the continuous drive shaft to pivot the cover between retracted and deployed positions. The drive assembly is reversible to accommodate covers mounted on either side of the container.

Abstract: A cover system for an open-topped container, such as a transfer trailer, includes a cover carried by a support frame pivotably mounted to the container. The support frame includes a triangular construct at the opposite ends of the container to improve the rigidity of the cover system. A continuous drive shaft extends along the length of the container and is connected to the support frame. A drive assembly rotates the continuous drive shaft to pivot the cover between retracted and deployed positions. The drive assembly is reversible to accommodate covers mounted on either side of the container.

Abstract: A tarp cover system includes a plurality of bows that extend transversely across an open-topped vehicle-mounted container for supporting a tarp cover, characterized in that the drive system for driving the bows between container-covered and container-uncovered conditions includes at each side of the container an endless cable arrangement including a pair of parallel horizontally-spaced runs that are contained in a common horizontal plane and are arranged on opposite sides of a longitudinally extending support upon which the bows are slidably mounted. Protective flanges extend laterally from the support above the cable runs, thereby to protect the cable runs during loading and unloading of the container. The side edges of the tarp extend horizontally outwardly over the cable runs and downwardly adjacent the external sides of the container, thereby to waterproof and protect the upper side edges of the covered container against the entry of water and dirt.