Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1992-08-27
1993-11-02
Rose, Robert A.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51425, B24C 306
Patent
active
052574792
ABSTRACT:
A pressure-enhanced air sweep system for a mobile surface abrading apparatus designed for cleaning and texturing the surface of horizontal, or near horizontal, structures, particularly roads, highways, airport runways and the like. Abrasive particles such as steel shot or grit are projected at the structure surface in angular relationship to abrade and etch the surface and the abrasive is swept by a pressurized current of air into one or more vertical abrasive conveyors, where it is transferred by air to a rotating screen, separated from the air, road debris and dust in the screen, recycled and repeatedly projected onto the surface to be treated. Air velocity through a sweeper channel upwardly through the vertical abrasive conveyor(s) is carefully controlled to lift the abrasive particles, as well as the dust and debris, beyond the rebound energy boundary and effect efficient recycling of the particles.
REFERENCES:
patent: 3934373 (1976-01-01), Leliaert
patent: 3981104 (1976-09-01), Dreher
patent: 4377923 (1983-03-01), Bergh
patent: 4433511 (1984-02-01), Swain
patent: 4841681 (1989-06-01), Dickson
patent: 5161337 (1992-11-01), Swain
Harrison John M.
Rose Robert A.
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