Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1977-09-22
1979-06-26
Godici, Nicholas P.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51273, B24B 2302, B24B 5506
Patent
active
041589351
ABSTRACT:
A sanding apparatus comprising a grooved circular backing plate adapted to be detachably secured to one end of a rotatably driven hollow shaft and supporting an abrasive-coated paper disc formed with a plurality of through holes communicating with grooves formed in the front face of the backing plate, a hollow cylindrical member forming an extension of the hollow shaft and protruding in a recessed central portion of the front face of the backing plate through a central hole thereof, a free space being provided between the central portions of the backing plate and abrasive-coated paper disc, respectively, around the hollow cylindrical member in which radial orifices are formed for allowing said free space to communicate with the interior of said member and of the hollow shaft coupled to suction means.
REFERENCES:
patent: 1353966 (1920-09-01), Lorenz
patent: 1765808 (1930-06-01), Tone
patent: 2527762 (1950-10-01), Pratt
patent: 3638362 (1972-02-01), Stoll
patent: 3754359 (1973-08-01), Scandaletos
patent: 3932966 (1976-01-01), Stern
Godici Nicholas P.
La Francaise Metallurgie
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