Patent ID: 6273636
Filing Date: 2001-08-14
Classification: E01C

Abstract:
An edge-forming device for a screed assembly having lateral ends and a screed plate extending between the lateral ends, the screed plate having a generally horizontal working surface, the edge-forming device comprising:a frame connected with one of the lateral ends of the screed assembly;a plate disposed generally below the frame, having a generally horizontal working surface and extending outwardly beyond the screed assembly lateral end such that the edge-forming plate working surface and the screed plate working surface are spaced laterally from each other; andan adjustment mechanism connected with the frame and with the edge-forming plate, the adjustment mechanism including first and second movable supports that are spaced horizontally from one another, first and second connective members each being connected at a first end to the first movable support and at a second end to the plate, each second end of the first and second connective members being displaceable vertically with respect to the first movable support such that displacement of the first connective member second end with respect to the second connective member second end adjusts an angle between the edge-forming plate and the screed plate, third and fourth connective members each being connected at a first end to the second movable support and at a second end to the plate, each second end of the first and second connective members being displaceable vertically with respect to the second movable support such that displacement of the third connective member second end with respect to the fourth connective member second end adjusts an angle between the edge-forming plate and the screed plate, the adjustment mechanism being configured to displace the plate with respect to the frame to adjust a vertical position of the edge-forming plate with respect to the screed plate such that the edge-forming plate can be positioned vertically lower than the screed plate so as to form a vertical step in a mat of material paved by the screed assembly proximal to an edge of the mat.