Abstract: Fabrication of yarns or other shaped articles from materials in powder form (or nanoparticles or nanofibers) using carbon nanotube/nanofiber sheet as a platform (template). This includes methods for fabricating biscrolled yarns using carbon nanotube/nanofiber sheets and biscrolled fibers fabricated thereby.

Abstract: A motor brush material contains copper particles dispersed and configuring particle group structure supported in inner pores of a sintered body containing carbon as a major component.

Abstract: The invention relates to a carbon brush, which is impregnated with a modified siloxane.

Abstract: An electrolyte dispensing ampule for deferred action batteries comprises a spring having means at both ends thereof for forming a closed, generally cylindrical space inside the spring and a metal layer covering the spring to hermetically seal the space. An electrolyte solution is contained in the spring and is dispersed to activate the battery when set-back forces extend the spring and break the sealing layer.

Abstract: A method is disclosed for creating a strong point for the attachment of carbon composites to metallic bodies that is suitable at high temperatures (1600.degree. F.) as well as ambient temperatures. A pocket of suitable dimensions and depth is molded into the carbon composite structure on both sides at an edge, with the edge relieved and rounded. A hole for a fastening member is molded or drilled in the approximate center of the pocket. After preparation of the surface the pocket, through hole, and relieved edge are nickel-plated to produce a rigid strong point. A doubler can be brazed to the nickel plate to strengthen the bond. The disclosed method can be used for attaching any type of electrically conductive composite material to a metallic structure.

Abstract: A carbon current collection brush having improved wear characteristics and exhibiting a relatively low coefficient of friction at its sliding contact surface (e.g., with a commutator or slip ring) is made by impregnating a brush blank with a solution containing an organometallic compound and an organic resin. The thereby impregnated brush blank is then cured to remove volatiles and retain approximately one to nine percent, by weight, of the organometallic compound and the organic resin in the brush blank.

Abstract: A method and apparatus for coating a member of graphite with a thin layer of an electrically highly conductive material from the vapor phase in which at least part of the material is deposited on the graphite member by ion plating to result in particularly well adhering and relatively thick layers of the materials being deposited on the graphite members.

Abstract: In a process for producing carbon or graphite articles, baked carbonaceous articles are impregnated with an aqueous solution of lignin sulfonate complex prior to carbonization or graphitization. The carcinogenic effects of conventional impregnants are eliminated, and impregnation temperatures are lowered significantly.

Abstract: A method for making conductive brushes which comprises providing a rotatable cylindrical mandrel having a plurality of longitudinal recesses on its surface, and winding electrically conductive fibers from a supply around the mandrel by rotating the mandrel. The brush backing or base may be formed by a number of methods utilizing the recesses on the surface of the mandrel. In one embodiment, the brush backing is formed by placing a strip of a conductive material in each of the recesses, and after the conductive fibers have been wound thereover, the conductive fiber windings are caused to adhere to each other by adhesive means and another strip of conductive material is placed over the windings to mate with the strip in the recess to form the backing for the conductive brush. Individual conductive brushes are obtained by cutting the conductive fibers in the longitudinal direction of the mandrel.

Abstract: A brush for an electric motor including a body of porous carbon impregnated with tin or alloys of tin with either lead, zinc, or silver and combinations thereof. The metal impregnated brush can be used in an electric motor which is operated while immersed in gasoline without substantial loss of the electrical and mechanical properties of the brush.

Abstract: An impregnated carbon brush for electrical machinery with improved running properties and increased wear-resistance, in which the carbon brush has an impregnating medium containing non-melting grease, and/or a non-melting wax, and/or a non-flowing oil. The impregnating medium in the carbon brush is on a synthetic, mineral, animal or vegetable base which is thoroughly mixed with a gelatinizing agent on an inorganic and/or organic base and thereby transformed to a non-melting or non-flowing harder and more wear-resistant condition. The gelatinizing agent contained in the carbon brush as a component of the impregnating medium comprises montmorillonite flakes with surfaces coated with long-chain hydrocarbons. The carbon brush includes additives for improving the sliding properties in the form of inorganic and/or organic additives such as metal sulfides, metal oxides and PTFE powder. The carbon brush contains 0.1 to 25% by weight of impregnation medium relative to the weight of the impregnated carbon brush.

Abstract: Electromotive brushes having improved commutating properties composed of a dense, rigid plate of self-bonded, non-woven carbon fibers formed from mesophase pitch fibers.

Abstract: A process for impregnating carbon resistors used in the telephony art to reduce or eliminate dusting of carbon particles during arcing, thereby permitting gap distances to be accurately maintained, and the useful life of the electrodes to be extended. The process includes the immersion of completed electrodes into a water solution of polyethylene glycol, whereby the solution is absorbed between the carbon granules, following which the water vehicle is allowed to evaporate, leaving a thin coating of glycol which binds the carbon granules together without significantly altering the resistive qualities of the carbon.

Abstract: A carbon graphite material for brushes of electric machines contains ultraphosphates of metals which are sealed by film-forming polymers. The material is impregnated in a mixture of a metal chloride with an aqueous solution of orthophosphoric acid and heat treated to form ultraphosphates of metals evenly distributed throughout the entire volume of the material. The material is then impregnated in a film-forming polymer resin solution, which enhances the contact characteristics of the material, and again heat treated till the resin is fully polymerized. As a result, the ultraphosphates which have formed earlier in the material, are sealed, thus becoming hydrolytically stable; at the same time, the contact characteristics of the material improve generally, the material becoming highly wear resistant, capable of operating within a wide range of temperatures, pressures and humidity.

Abstract: The present invention relates to heavy-current electrical engineering, and more particularly to carbon-graphite brushes characterized by high wear resistance and low adhesive capacity of the brush dust, said brushes being intended for operation in commutator machines under moderate or heavy commutation conditions at an operating temperature of the sliding contact from 200.degree. to 250.degree. C, and to a method for manufacturing same.Carbon-graphite brushes for electric machines are made of a material which, after impregnation and heat treatment of the organic impregnation compound contains a dry residue evenly distributed through out the entire bulk volume thereof, the dry residue being a mixture of melamine-glyptal resin with a metal linoleate, in a polymerized state.