Patent ID: 8534742
Filing Date: 2013-09-17
Classification: B60J,B60P

Abstract:
1. A motorized roll-up tarp apparatus for attachment to an open top truck trailer, the open top truck trailer having an open truck box, the open truck box having a top opening, two ends and first and second longitudinal sides, the motorized roll-up tarp apparatus comprising: a flexible tarp, the flexible tarp having first and second lateral edges and first and second longitudinal edges; wherein the first longitudinal edge can be interconnected to the first longitudinal side of the truck box; an elongated roll bar member attached to the second longitudinal edge of the flexible tarp; the elongated roll bar member having first and second ends; a converter unit operatively connected to an end of the elongated roll bar member; a motive source operatively connected to the converter unit, the motive source including motor having a worm gear; the motive source providing power to the converter unit so that the converter unit is able to rotate the elongated roll bar member to selectively move the elongated roll bar member over the top opening of the truck box in both an unroll direction, so as to position the flexible tarp in a secured position, and a roll-up direction, so as to position the flexible tarp in an open position when the first longitudinal edge is interconnected to the first longitudinal side; wherein the converter unit multiplies the force provided by the motive source; an arm, the arm having an end connected to the motive source and the converter unit and an end rotatably connected to the truck box; and a biasing member that can apply a tensioning force to the elongated roll bar member.