Abstract: A lead wire implanting apparatus is provided that can fabricate high-quality brushes that are without variations in implanting height and implanting strength and free from cracks and that can make the reproducibility of set values better and improve the workability in setup changing. The lead wire implanting apparatus has a tamping member and a storing cup for storing conductive metal powder, for implanting and fixing a lead wire to a brush main body by performing a tamping action of the tamping member a predetermined number of times. The apparatus has a linear-type servo motor serving as a drive source for driving the tamping member in vertical directions, a first position detector for detecting a shift position of the tamping member, and a controller device for controlling the linear-type servo motor based on detected information by the first position detector to cause the tamping member to perform a predetermined tamping action.

Abstract: Provided are a heat releasing material for an electronic device being manufactured by the junction of a metal impregnated carbon composite material on a copper or aluminum substrate with reduced warpage; and a method for manufacturing the heat releasing material. A metal substrate/metal impregnated carbon composite material structure, characterized in that it comprises a metal substrate comprising a metal sheet, plate or block and, being joined on the metal substrate via a brazing material, a metal impregnated carbon composite material having a thickness of 0.1 mm to 2 mm; and a method for manufacturing the metal substrate/metal impregnated carbon composite material structure, characterized in that it comprises a step wherein a brazing material is caused to be present between the metal substrate and the metal impregnated carbon composite material, and they are kept at a temperature of 500° C. or higher and under a pressure of 0.2 MPa or more and then cooled.

Abstract: A lead wire implanting apparatus is provided that can fabricate high-quality brushes that are without variations in implanting height and implanting strength and free from cracks and, moreover, that can make the reproducibility of set values better and improve the workability in setup changing. The lead wire implanting apparatus has a tamping member (6) and a storing cup (14) for storing conductive metal powder, for implanting and fixing a lead wire (4) to a brush main body (8) by performing a tamping action of the tamping member (6) a predetermined number of times.

Abstract: A carbon brush that suppresses a wear amount of a carbon commutator and has less swelling is provided. The carbon brush has a part connected to a lead and is one that slides in contact with a carbon commutator that is used in a fuel pump. The bulk density of the carbon brush is 1.85 g/cm3 or less, and the shore hardness of the carbon brush is 40 or less.

Abstract: The present invention provides a carbon commutator and a carbon brush for a fuel pump which have excellent slidability and abrasion resistance, and a fuel pump having the carbon commutator and the carbon brush incorporated therein. In the carbon commutator for a fuel pump, at least a contact portion to contact with a brush contains 0.2 to less than 5% by weight of an amorphous carbon. The carbon brush for a fuel pump to contact with and slide on the carbon commutator contains 0.2 to not more than 5% by weight of an amorphous carbon. The fuel pump includes the carbon commutator having the foregoing structure and the carbon brush having the foregoing structure.

Abstract: A carbon brush that can suppress a wear amount of a carbon commutator and is less swelling is provided. The carbon brush is one that slides in contact with a carbon commutator that is used in a fuel pump, the bulk density thereof being 1.85 g/cm3 or less, and the shore hardness thereof being 40 or less.

Abstract: A commutator is provided which can be produced at low cost and is excellent in wear resistance and can be used in the fuel pump. The commutator is one in which at least those portions which come into contact with brushes comprise a filler mainly consisting of coke, and a carbonized binder.

Abstract: Disclosed is a metal coated carbon brush having a carbonaceous substrate and a metal coating formed on a surface of the carbonaceous substrate having a mean pore radius of 0.1–2.0 ?m and an accumulative pore volume of 50–600 mm3/g.

Abstract: Molybdenum disulfide, tungsten disulfide or the like as a solid lubricant and any of alumina, silica, silicon carbide or the like as an abrasive are added to filter graphite. A metal of good electric conductor is coated over the whole surface of a carbon brush material except a part of the carbon brush material to be contacted with a commutator. When the commutator rotates clockwise, a metal coating of the good electric conductor is removed mechanically from at least a part of at least either of a left side surface or a right side surface.

Abstract: Disclosed is a metal coated carbon brush having a carbonaceous substrate and a metal coating formed on a surface of the carbonaceous substrate having a mean pore radius of 0.1-2.0 &mgr;m and an accumulative pore volume of 50-600 mm3/g.