Abstract: Fused abrasive particles comprising eutectic material. The fused abrasive particles can be incorporated into abrasive products such as coated abrasives, bonded abrasives, non-woven abrasives, and abrasive brushes.

Abstract: Fused abrasive particles comprising at least one eutectic. The fused abrasive particles can be incorporated into abrasive products such as coated abrasives, bonded abrasives, non-woven abrasives, and abrasive brushes.

Abstract: A composite metal matrix formed of polycrystalline &agr;-Al2O3 fibers encapsulated within a matrix of substantially pure elemental aluminum, or an alloy elemental aluminum and up to about 2% copper is disclosed. The resulting materials are characterized by their high strength and low weight are particularly well suited for applications in various industries including high voltage power transmission.

Abstract: This invention provides an abrasive brush having strength and abrasive characteristics similar or superior to those of conventional brushes, and which allows a brush assembly having a desired width dimension and a desired brush surface hardness to be readily and easily assembled. A disk-shaped abrasive brush 1 includes a radial inner hub 5 and a radial outer brush section 3, preferably the hub 5 being integrally formed with the brush section 3. The hub 5 is provided with a flat part, a recessed part 9, 11, and a projecting part 7. When two adjacent abrasive brushes are aligned adjacent to each other, the flat, recessed and projecting parts of the abrasive brushes are engaged with each other and define a pitch between the abrasive brushes.

Abstract: Copper matrix composites reinforced with continuous SiC and/or boron fibers.

Abstract: Reaction injection molding is utilized as a method for making an abrasive article that includes supplying an effective amount of abrasive particles to at least a portion of an abrasive article mold and supplying a binder precursor matrix that includes at least two interactive components to the abrasive article mold. When the binder precursor matrix is cured, the abrasive particles are secured within a binder formed from the binder precursor matrix. An abrasive article includes a plurality of bristles including an increased amount of abrasive particles, wherein a ratio of binder to abrasive particles is at least about 1:3 by weight.

Abstract: A coated abrasive backing consisting of an endless, seamless, loop is provided. The backing loop includes about 40-99% by weight of an organic polymeric binder, based upon the weight of the backing; and an effective amount of a fibrous reinforcing material engulfed within the organic polymeric binder material. The endless, seamless backing loop includes a length with parallel side edges, and at least one layer of fibrous reinforcing material engulfed within the organic polymeric binder material such that there are regions of organic binder material free of fibrous reinforcing material on opposite surfaces of the layer of fibrous reinforcing material. The fibrous reinforcing material can be in the form of individual fibrous strands, a fibrous mat structure, or a combination of the these. A method for preparing the endless, seamless backing loop for a coated abrasive belt is also provided.

Abstract: A coated abrasive backing consisting of an endless, seamless, loop is provided. The backing loop includes about 40-99% by weight of an organic polymeric binder, based upon the weight of the backing; and an effective amount of a fibrous reinforcing material engulfed within the organic polymeric binder material. The endless, seamless backing loop includes a length with parallel side edges, and at least one layer of fibrous reinforcing material engulfed within the organic polymeric binder material such that there are regions of organic binder material free of fibrous reinforcing material on opposite surfaces of the layer of fibrous reinforcing material. The fibrous reinforcing material can be in the form of individual fibrous strands, a fibrous mat structure, or a combination of the these. A method for preparing the endless, seamless backing loop for a coated abrasive belt is also provided.

Abstract: A method and apparatus for knurling a workpiece in which the knurl pattern includes grooves of at least two different configurations. The apparatus includes a knurl wheel holder that allows angular rotation of the knurl wheel about the holder longitudinal axis while maintaining the knurl wheel point of contact on the longitudinal axis. The apparatus also includes a knurling wheel that includes teeth of at least two different configurations. Also disclosed is a method of molding a molded article with the knurled workpiece to impart the inverse of the knurl pattern onto the molded article, such a molded article, a method of forming a structured abrasive article with the molded article, and such an abrasive article.

Abstract: An abrasive article having a patterned abrasive surface is provided. In accordance with the present invention, the article comprises a substrate having a first side. A plurality of raised portions are positioned on the first side of the substrate with the raised portions defining recessed areas between each raised portion. A first adhesive layer is applied to the raised portions and an abrasive material is deposited onto the first adhesive layer thereby coating the raised portions of the substrate to form an abrasive coating with the recessed areas remaining free of the abrasive material.

Abstract: A backup pad for engaging and supporting abrasive sheets, the backup pad being mounted securely to a drive shaft to prevent relative rotation thereto, and to allow easy mounting and dismounting of the backup pad to the mounting shaft without the use of tools. The backup pad includes a body comprising a front surface and a back surface, releasable engagement means provided on the front surface for releasably engaging an abrasive article, and a mounting boss provided on said rear surface. The mounting boss includes a first end facing away from the body, and an opening in the first end of the boss, the opening being formed by an inner surface generally perpendicular to said body and defining a non-circular cross-section. The opening includes elastic means such as an o-ring for releasably engaging a drive shaft mounted in said opening. Also disclosed is a method of using such a backup pad.

Abstract: An abrasive article including (i) an embossed isolation layer defining inversely contoured first and second surfaces with a plurality of peaks on the first surface producing a plurality of pockets on the second surface, (ii) grinding aid-containing protrusions positioned within the pockets, and (iii) a coating of abrasive particles adhered to the contoured first surface of the isolation layer.

Abstract: Compositions have been created comprising a blend of a polypropylene having less than 90 percent isotactic linkages and thermoplastic block copolymers. Specifically, the thermoplastic block copolymers comprise hard segments of polystyrene combined with soft segments comprising 2 to 8 carbon atoms. Some of the physical characteristics of materials made by these composition are more desirable than the same physical characteristics of materials made of the polypropylene having less than 90 percent isotactic linkages used to make the composition and of the same physical characteristics of materials made of the thermoplastic block copolymer used to make the composition.

Abstract: Abrasive filaments including plastic abrasive particles interspersed in a thermoplastic matrix. The abrasive filaments can comprise monofilaments, coextruded core/sheath filaments, and coated preformed cores. Also disclosed are abrasive brush constructions using a plurality of such abrasive filaments mounted on a suitable substrate, and unitary injection molded abrasive brushes. Also disclosed are methods of making such filaments and brushes, and method of using such brushes.

Abstract: Described are abrasive articles comprising a nonwoven; a binder layer contacting the nonwoven and at least partially filling spaces between fibers of the nonwoven; first abrasive particles adhered to the binder layer; a slurry layer comprising a second binder and second abrasive particles, the slurry layer contacting the nonwoven and the first layer and at least partially filling spaces within the fibers of the nonwoven; and, methods of preparation of such articles.

Abstract: The present invention provides a flexible abrasive article containing minimal releaseable amounts of physical and chemical contaminants that may be used to clean surfaces. The abrasive article is made of a foraminous substrate, at least one binder and abrasive particles. Methods of making such abrasive articles are also provided.

Abstract: An abrasive article including (i) a first backing, (ii) a plurality of protrusions attached to the first surface of the first backing and including a grinding aid, wherein the first surface of the first backing is contoured by the protrusions so as to define a plurality of peaks and valleys, and (iii) a coating of abrasive particles adhered to the contoured first surface of the first backing so as to cover at least a portion of both the peaks and the valleys.

Abstract: The present invention provides an improved nonwoven abrasive product. The improved abrasive product has a porous, lofty web of multiple layers of coiled, autogenously bonded thermoplastic filaments, binder resin, abrasive granules and size resin. When porous, lofty web, before adding binder resin, abrasive granules or size resin, has a coil weight in the range of 17 to 28 g/24 in2 (1.097 to 1.808 kg/m2) and is variegated, and the coated porous lofty web exhibits a relatively high measured load/deflection value then the useful life of the abrasive product is greatly increased compared to abrasive products made from webs having lower coil weights and no variegation.

Abstract: Steam valve wherein at least one of the valve plug mating surface or valve seat mating surface has a metal nitride and/or carbide coating thereon. Preferably, the metal nitride and/or carbide coating is on both mating surfaces.

Abstract: An abrasive article including (i) a backing, (ii) a plurality of grinding aid-containing protrusions integrally molded on the first surface of the backing, wherein the first surface of the backing is contoured by the protrusions so as to define a plurality of peaks and valleys, and (iii) a coating of abrasive particles adhered to the contoured first surface of the first backing so as to cover at least a portion of both the peaks and the valleys.