Surface treating apparatus
AssigneeWheelabrator-Frye Inc.
InventorJohn C. Bergh
Life of this patent
Estimating the term…
Abstract
A portable apparatus for treatment of surfaces, preferably horizontal, comprising a centrifugal wheel for projecting abrasive particles onto the surface of an angle within the range of 30.degree. to 80.degree. with the surface, a feed hopper for supplying abrasive particles to the wheel, a rebound corridor extending angularly upwardly through an angle of at least 180.degree. with the surface and through which the abrasive particles rebound upon striking the surface whereby gravity means take over for returning the rebounding abrasive particles to the hopper.
Claims9
In an abrasive throwing machine comprising an enclosure having an opening therein, means around the opening in said enclosure to retard the escape of spent abrasive from said enclosure, means within the enclosure for protecting abrasive particles along an incident path through said opening onto said surface and from said surface along a rebound path at a substantially mirror angle with said incident path, said projecting means being oriented to establish the incident path at an acute angle with the surface, the improvement wherein the rebound path comprises a continuous curvilinear path, and means for returning spent abrasive from the end of the rebound path to said projecting means.
Dependencies are inferred from the claim text.