Abrading – Machine – Sandblast
Patent
1993-09-23
1996-01-09
Rachuba, Maurina T.
Abrading
Machine
Sandblast
451 87, 451 88, 451 89, 451 92, B24C 100
Patent
active
054818320
ABSTRACT:
A series of large bins which can be raised and lowered on lifts in order to reach a bridge that is to be sand blasted. A skirt is attached to the upper outside edges of the bins. This skirt is raised and attached to the bridge so that the entire work area is completely enclosed. An air inlet and an air outlet are provided at either end of the enclosed work area. Air is pumped in to the work space through the inlet and is evacuated through the outlet. The outlet pressure is maintained at a higher level than that of the inlet in order to maintain a negative air pressure inside the work area relative to the outside air pressure. A grate covers each bin, providing an area on which workers can stand. As the bridge is sand blasted, all paint debris and blasting sand falls through the grates and into the bins. Smaller particles of dust are removed from the work area through the air outlet and are collected by a dust filter. The lifts are independently controllable, so that the bins can be raised such that the grates are parallel to the supporting road surface or such that they are tilted at an angle with respect to this surface. The bins and lifts are mounted on the bed of a trailer for easy mobility. All debris collected by the bins is removed at a valved outlet at the bottom of each bin.
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Valenti, Michael, "Cutting Sandblasting Costs," Mechanical Engineering, Mar. 1993, p. 34.
Champagne Thomas M.
Rachuba Maurina T.
Roberts Jon L.
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