William R Lovness

US Patent:

43554890, Oct 26, 1982

Filed:

Sep 15, 1980

Appl. No.:

6/186470

Inventors:

Raymond F. Heyer - Saint Paul MN
William R. Lovness - Saint Paul MN

Assignee:

Minnesota Mining and Manufacturing Company - Saint Paul MN

International Classification:

B24D 1100

US Classification:

51400

Abstract:

An abrasive article comprising a plurality of separated abrasive agglomerates distributed within a matrix of undulated filaments is provided. The invention also provides a method of making an abrasive article comprising forming, within a lofty open web comprising undulated filaments bonded at points of mutual contact, a plurality of separated abrasive agglomerates to provide an abrasive agglomerate-impregnated web. Articles may be prepared of the agglomerate-impregnated web per se or by laminating layers of the web together preferably under pressure. Exemplary articles include abrasive wheels, discs, belts, sheets, blocks and the like.

US Patent:

44862008, Dec 4, 1984

Filed:

Sep 9, 1982

Appl. No.:

6/416366

Inventors:

Raymond F. Heyer - Saint Paul MN
William R. Lovness - Saint Paul MN

Assignee:

Minnesota Mining and Manufacturing Company - Saint Paul MN

International Classification:

B24B 100

US Classification:

51295

Abstract:

An abrasive article comprising a plurality of separated abrasive agglomerates distributed within a matrix of undulated filaments is provided. The invention also provides a method of making an abrasive article comprising forming, within a lofty open web comprising undulated filaments bonded at points of mutual contact, a plurality of separated abrasive agglomerates to provide an abrasive agglomerate-impregnated web. Articles may be prepared of the agglomerate-impregnated web per se or by laminating layers of the web together preferably under pressure. Exemplary articles include abrasive wheels, discs, belts, sheets, blocks and the like.