Portable device for treating surfaces
AssigneeWheelabrator-Frye Inc.
InventorJohn C. Bergh
Life of this patent
Estimating the term…
Abstract
A portable device for treatment of surfaces, preferably horizontal, comprising a centrifugal wheel for projecting abrasive particles onto the surface at an angle with the surface, a feed hopper for supplying abrasive particles to the wheel, a rebound corridor extending angularly upwardly and into which the abrasive particles rebound upon striking the surface, and means for inducing air flow into the blast area and through the rebound corridor for enhancing removal and recovery of abrasive particles.
Claims17
A portable surface treating apparatus comprising a housing having a horizontally disposed bottom wall and a blast opening in the bottom wall adapted to overlie a horizontally disposed surface to be treated, a blast corridor extending angularly downwardly into the opening, means for projecting abrasive particles angularly downwardly through the blast corridor and through the opening onto the surface, a rebound corridor extending angularly upwardly from the opening at about a mirror angle to the blast corridor whereby abrasive particles rebound upon impact with the surface into the rebound corridor, means communicating with the rebound corridor for inducing the flow of air from the atmosphere surrounding the blast opening, into the blast opening and through the rebound corridor for inducing the removal of abrasive and other particles from the surface while aiding the rebounding particles to travel through the rebound corridor, said rebound corridor deminishing in cross section from adjacent the opening.
A portable surface treating apparatus comprising a housing having a horizontally disposed bottom wall and a blast opening in the bottom wall adapted to overlie a horizontally disposed surface to be treated, a blast corridor extending angularly downwardly into the opening, means for projecting abrasive particles angularly downwardly through the blast corridor and through the opening onto the surface, a rebound corridor extending angularly upwardly from the opening at about a mirror angle to the blast corridor whereby abrasive particles rebound upon impact with the surface into the rebound corridor, means communicating with the rebound corridor for inducing the flow of air from the atmosphere surrounding the blast opening, into the blast opening and through the rebound corridor for inducing the removal of abrasive and other particles from the surface while aiding the rebounding particles to travel through the rebound corridor, said rebound corridor defining a curvilinear path for the abrasive particles rebounding therethrough.
Dependencies are inferred from the claim text.