Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1990-06-28
1990-12-04
Schmidt, Frederick R.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51391, 51407, B24D 1500, B24D 1504
Patent
active
049743694
ABSTRACT:
The present invention is directed toward flexible embossed supportive backings for coated abrasives, which are used with "sanding" tools. The supportive backing is made from a flexible elastomeric material embossed on one side with a predetermined pattern. The embossment pattern incudes an uninterrupted narrow border along the edges that lay perpendicular to the primary of travel during use, a plurality of narrow grooves within the border which disrupt the surface area of the elastomeric material, and lines of severance that partially separate the edges of the material from its main body.
The surface acts as the supportive backing for a coated abrasive as it is worked over a roughened surface. The grooves created by the embossment pattern allow the coated abrasive to deform as it encounters high points on a roughened surface, which allows the abrasive to surround the contours of the roughened surface and greatly increases the efficiency of the coated abrasive. The grooves created by the embossment minimizes the work dust trapped between the coated abrasive and the supportive surface, which minimizes high points and uneven results.
REFERENCES:
patent: 1175245 (1916-03-01), Dennis
patent: 1595700 (1926-08-01), Backlind
patent: 2491510 (1949-12-01), Miller
patent: 2870581 (1959-01-01), Lyon
patent: 3030742 (1962-04-01), Costello
patent: 3261049 (1966-07-01), Murphy
patent: 3892091 (1975-07-01), Hutchins
patent: 3900976 (1975-08-01), Kitts, Jr.
Glynn Kenneth P.
Schmidt Frederick R.
Watson Bruce P.
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