Portable surface treating apparatus
AssigneeWheelabrator-Frye Inc.
InventorJohn C. Bergh
Life of this patent
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Abstract
A portable apparatus for treatment of surfaces, preferably horizontal, comprising a centrifugal wheel for projecting abrasive particles onto the surface at an angle within the range of 30.degree. to 80.degree. with the surface, a hopper for supplying abrasive particles to the wheel, a rebound corridor extending angularly upwardly preferably to a level above the hopper and into which the abrasive particles rebound upon striking the surface and means for returning abrasive particles rebounding through the corridor to the hopper, means for intercepting abrasive particles which do not possess sufficient kinetic energy to rebound through the corridor to prevent return of said abrasive particles to the surface, and means for displacement of intercepted abrasive particles to the hopper.
Claims13
A portable apparatus for treatment of horizontally disposed surfaces comprising:
- 1. a housing:
- 2. means on said housing above the surface for projecting abrasive particles downwardly onto the surface at an angle with the surface:
- 2a. a hopper on said housing for feeding abrasive particles to said projection means:
- 3. a rebound corridor in said housing extending angularly upwardly from the surface into which the abrasive particles rebound upon striking said surface;
- 4. means on said housing at the end of the rebound corridor for returning abrasive particles passing through the corridor to the hopper;
- and
- 5. means extending into the rebound corridor for a short distance from the wall of the corridor for intercepting abrasive particles which do not possess sufficient kinetic energy to rebound through the corridor to prevent return of said abrasive particles to the surface.
Dependencies are inferred from the claim text.