Abrading apparatus and method having induced air

Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof


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51142, 51356, 51328, B24B 2100, B24B 100




In apparatus for abrading a workpiece including a central support member having a power-driven contact roll and an idler roll mounted thereon, and an endless, abrasive belt trained over the rolls with an air space being defined between inside surfaces of the belt and the central support member, an improvement which includes pressurizing the air space for maintaining same at a pressure greater than the prevailing air pressure adjacent the outside surfaces of the belt to substantially prevent inflow of abraded debris to the air space.

patent: 1493779 (1924-05-01), Humphreys
patent: 2594647 (1952-04-01), Hendrickson
patent: 2883804 (1959-04-01), Hjelstrom et al.
patent: 3030744 (1962-04-01), Mueller
patent: 3408775 (1968-11-01), Rutt
patent: 3646712 (1972-03-01), Quintana
patent: 3694966 (1972-10-01), Heesemann
patent: 3907257 (1975-09-01), Drzewiecki


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