Patent ID: 6109486
Filing Date: 2000-08-29
Classification: A01C

Abstract:
A process for pluviating dry sand into a receptor vessel from a supply vessel, said receptor vessel comprising (a) four vertical vessel side walls; (b) a horizontal, stationary upper tray forming the bottom of the vessel and having multiple regularly-spaced perforations; (c) a horizontal, slidable lower tray disposed below the stationary tray and in sliding contact therewith, having corresponding multiple regularly-spaced perforations; and (d) means affixed at the interior sides of the lower edges of two opposing sidewalls for movably supporting the lower tray: wherein the multiple regularly-spaced perforations in the upper and lower trays have identical spacing and orientation, and wherein, in the ""open"" position of the lower tray, the perforations of the upper and lower trays are in alignment, and in the ""closed"" position of the lower, the perforations of the upper tray are blocked by the lower tray comprising dispensing the sand into the receptor vessel when the lower tray is in the ""open"" position, and stopping the flow of sand into the receptor vessel by moving the lower tray into the ""closed"" position.