Abstract: An eddy current coupling (11) includes a housing (13, 15, 17), a rotor (29), an inductor drum means (25), coil means (41) for electro-magnetically coupling the rotor member and the inductor drum means and a slip ring assembly (45) for energizing the coil. The slip ring assembly includes a first support member (55) connected to the rotor member for rotation therewith, slip ring means (47, 49) for energizing the coil means supported by the first support member, a second support member (56) and brush means (51, 53) supported by the second support member. The first and second support members define a sealed chamber (80) in which the slip ring means and brush means are located. A passageway means (92) is provided from the sealed chamber for directing wear debris generated by the contact between the brush means and slip ring means from the sealed chamber. An impeller (98) is provided for impelling the debris through the passageway means and from the chamber.

Abstract: An economical, miniature electric motor exhibiting improved efficiency and in-specification, first-use performance after substantial periods of non-use, which is especially suited for operating the film eject mechanism of a self-developing camera, includes single piece, base metal brushes, a plain bore armature bearing in the commutator end cap, and a fibrous wicking material containing a supply of commutation enhancing lubricant bearing against the commutator to provide a supply of the lubricant thereto which minimizes brush friction while enhancing electrical conduction therebetween. Additionally, migration of the commutator lubricant along the rotor shaft into the plain bore journal in the motor end cap is encouraged to provide a supply of surface lubricant for the journal.

Abstract: A wiper mounted for rotation with the shaft of an apparatus such as an electric motor for preventing wicking by lint collecting on the portion of the housing surrounding the shaft opening thereof. The wiper, in the illustrated embodiment, is carried on the lubricant slinger mounted to the shaft and extending outwardly through the housing opening. The slinger, in the illustrated embodiment, is pressfitted to the shaft so as to permit the wiper to be accurately juxtaposed to the outer surface of the housing defining the shaft opening. In the illustrated embodiment, the wiper is formed integrally with the slinger. The wiper is preferably resiliently carried by the slinger so as to accommodate axial displacement of the motor shaft tending to bring the wiper into engagement with the housing portion defining the shaft opening.

Abstract: A high-current electrical machine, comprises a stationary and a moving member and at least one current collector brush disposed between the members and in frictional contact with one member; where the brush comprises a plurality of flexurally independent, metal fibers, and where a non-oxidizing gaseous medium containing water vapor, contacts the interface of frictional contact of the brush to provide a lubricating effect.

Abstract: In a permanent magnet motor wherein commutator segments have surfaces arranged in a plane perpendicular to the motor shaft for sliding contact with brushes, each brush is made of sheet metal and comprises an inner portion affixed to an end cap of the motor casing, and a substantially annular outer portion united at one of its ends to the inner portion and having an embossed contact on the other end which is resiliently urged into sliding contact with the commutator segment surfaces. The outer brush portion is notched to engage a protuberance on the end cap. A lubricant reservoir is formed either on the commutator or on each brush. The end cap may be locked in position on the motor casing, and the commutator may be mounted on the motor shaft in a predetermined angular position in relation to that of an armature core.

Abstract: A collector for collecting and passing an electric current in sliding contact, which is used for an electric train, a crane, a hoist or the like, said collector comprising a substrate metal or metal matrix into which a solid lubricant is dispersed, a layer of a prescribed thickness containing dispersed therein particles of the solid lubricant having a particle size of up to 2.5 mm, which is formed on the sliding surface side of the collector, and a solid lubricant-free layer of a prescribed thickness formed on the opposite surface side of the collector.

Abstract: An electrical contact brush having interposed in a central longitudinal slot an abrasive element which frictionally contacts the commutator surface at crests where the radius of curvature of the commutator is less than that of a concave contact surface preformed at the distal end of the brush but which does not contact the commutator at valleys where the radius of curvature of the commutator is greater than that of the brush contact surface, said element in operation mechanically reducing the average radius of the commutator at a rate faster than the rate at which the commutator surface is electrically eroded, thereby tending to maintain a true cylindrical commutator surface with uniform wear characteristics.

Abstract: A motor-compressor unit of the sealed type for refrigerating appliances, characterized by the combination of the following features:A. the motor which drives the compressor is a direct current electric motor of the commutator type;B. the chamber containing the motor is separated from the chamber containing the compressor by sealing means for realizing a seal tight with regard to the compressor lubrication oil and with regard to the carbon dust generated by the sliding of the brushes of the commutator,C. in the chamber containing the motor there are disposed, adjacent the commutator, absorption means for chemically absorbing the products originating from the decomposition of the refrigerating fluid caused by damage the compressor and the other components of the refrigerating appliance.