The invention is directed to an improved abrasive pad (15). In the preferred embodiment, the abrasive pad is comprised of an inner core (16) having an outer surface (19), a strip of abrasive material (18), the strip of abrasive material wrapped around the outer surface of the inner core, and a central throughbore (20) extending through the material and the inner core and adapted for engagement with a torque-producing device. The outer surface of the abrasive pad may comprise a top surface (21), ...

An abrasive solid is composed of an organic high polymer matrix and an abrasive material dispersed in the matrix to form a solid mass, whose cutting resistance is from 2 kgf (19.6 N) to 15 kgf (147 N) so that the abrasive solid is severable into two with use of a knife, cutter or the like tool and highly effective to remove rust from any target article. Two or more of such abrasive solids each having these properties are consolidated to form an integral piece that can be trimmed into any desired...

The invention is directed to an abrasive sheet for cutting a workpiece and is adapted for use with a sanding tool having a base plate with a plurality of apertures formed therein and equipped with a suction arrangement for establishing a partial vacuum at each of the apertures. The abrasive sheet includes a base sheet having a plurality of apertures formed therein and located thereon to register with the apertures of the base plate. An abrasive material is secured to the base sheet for defining ...

An abrasive drill of small diameter or "micro" drill, on the order of tenths of a millimeter to about a millimeter in diameter, is provided with a concentric cored portion occupied by relatively non-abrasive material. The filled portion is small enough that during drill rotation all of the surface of a workpiece within the outline of the end of the drill is abraded sufficiently by some part of the rotating end of the drill to crumble away rather than leaving any solid core or large fragments of ...

An abrasive tool having a base portion with etched metal abrasive thereon and a handle portion adapted to snap onto the base in two alternate positions, one position being tight for using the etched metal abrasive and the other position being raised slightly to accomodate, between the handle and the base, a piece of sandpaper wrapped around the base.

A laminated abrasive body which is in effect a thick compact comprising a plurality of diamond or cubic boron nitride compacts laminated together, joining of adjacent compacts taking place by means of a layer of a metal or metal alloy braze and the thickness of the laminate exceeding 5 mm and the longest dimension of the body transverse to the thickness exceeding 2 mm. The invention also covers methods of making such laminated bodies by forming alternate layers of braze and compact or compact-fo...

This invention relates to improved fabrics used in the reinforcement of resin-bonded abrasive wheels. The fabrics are characterized by a coating of a novolak resin essentially free of added crosslinking agents.

Abrasive compositions and articles such as grinding wheels and hones formed therefrom which abrasive compositions contain from 6 to 35 volume percent of diamonds from 5 to 65 volume per cent of a dendritic form of a metal such as copper, or silver or alloys thereof, from 10 to 75 volume percent of a coalesced aromatic polyimide and up to 80 volume percent (but retaining the 10 volume percent minimum of polyimide) of the polyimide phase of a filler or a metal coating on the diamonds.

An abrasive handtool for removing rust or similar films from pipes, rods and the like in which the tool is provided with a molded body of plastic or other yieldable material and has one or more openings therein presenting abrasive surfaces for receiving the pipe or rod, the body being compressible manually to urge the abrasive sides of the opening into contact with the pipe to polish the surface thereof. One or both ends of the body may present cylindrical surfaces for polishing the inner surfac...

Abrasive and a fluid are mixed and supplied from a container to a first part of a workpiece to be cleaned and then returned to the container means. The abrasive cleaning is accomplished by reversing the flow of the fluid and abrasive mixture to direct the mixture to a second part of the workpiece and the cleaning is also effected by utilizing the mixture of air and a liquid as the fluid carrier of the abrasive. This mixture is used to clean metal castings or to debur machined metal parts. The fo...