Abstract: A metal-graphite brush for supplying electricity to a coil wound around a core provided at a rotor of a motor is made of sintered material having porosities at a surface and inside thereof, and the porosities is infiltrated with a conductive liquid having a boiling point higher than that of water.

Abstract: Provided is a motor having a magnetic polar unit in which a permanent magnetic polar array having arranged therein alternately a plurality of permanent magnetic polar elements in alternate opposite poles is made to face a plurality of electromagnetic coil arrays alternately excited at opposite poles, and the permanent magnetic polar array is made to move thereby; wherein the motor further comprises a sensor for detecting the periodical magnetic change accompanying the movement of the permanent magnetic polar array, the output of the sensor is directly returned as a direct drive waveform to the electromagnetic coils, and this drive circuit forms the excitation signal based on the return signal.

Abstract: A running motor (100) used for vehicles is provided with a stator (200), a rotor (300) and a housing (400) for holding them, wherein the rotor has a support member (330) for preventing rotor magnets (320) from separating from a laminated steel sheet (310), the laminated steel sheet has a plurality of first steel sheets (311) each formed slots (311a) through which the rotor magnets are inserted respectively and a second steel sheet (312) to which the insertion ends of the rotor magnets are pressed, and the plurality of first steel sheets and the second steel sheet are configured to have mutually the same contour. The housing includes a control (500) for supplying a coil (210) of the motor with power and a sensor (600) for detecting a position of the rotor. Further, the housing includes a first housing member (410) for covering the stator and the rotor, a second housing member (420) for dividing the interior of the housing, and a third housing member (430) for covering the control.

Abstract: This invention includes an AC generator having a stator and a rotor supported by a frame, positive-side and negative-side radiation boards arranged within the frame and supporting positive-side and negative-side rectifying devices, respectively, for rectifying an AC output of the AC generator, an output terminal member penetrating the positive-side and negative-side radiation boards to be exposed to outside of the frame and electrically and mechanically connected with the positive-side radiation board, and a connection part forming member made of a material having the same coefficient of linear expansion as that of the output terminal member, a material having higher thermal conductivity than the positive-side radiation board, or a material having a lower ionization tendency than the positive-side radiation board, at a connection part of the positive-side radiation board with the output terminal member.

Abstract: The present invention provides for a fitted wedge wherein a formed outer frame is loosely fitted into a desired gap. The formed outer frame contains a lateral gap such that the formed outer frame is substantially or completely divided into two halves. A thin, stiff sheet coated with a resin saturated felt is then inserted between the two halves of the outer frame. The two halves are pushed apart, snuggly fitting the formed outer frame into place. The resin in the felt is then cured, forming a single, snuggly fit wedge.

Abstract: An inner sleeve, having threads on each end, is formed on a motor or generator rotor. A pair of stub shafts are threadably attached to the inner sleeve at each end and a magnet is placed in between. The stub shafts are turned on the inner sleeve to bring them together, thereby creating an axial compressive force on the magnet. By keeping the magnet in a compressive state at all times, cracking of the magnet is prevented, thus keeping the rotor stable during use of the motor or generator. An outer sleeve is shrunk-fit around the magnet and stub shafts to provide a further radial force on the rotor. The magnet assembly of the present invention also enlarges the required radial shrink-fit tolerance of the outer sleeve on the magnet, thereby reducing costs conventionally required to match the outer sleeve to the magnet within close tolerances.

Abstract: Disclosed are a reciprocating motor and a reciprocating compressor having the same. The reciprocating motor comprises: an outer stator; an inner stator arranged at an inner circumferential surface of the outer stator with an air gap and at which a winding coil is wound; and a magnet arranged between the outer stator and the inner stator and linearly-moved when a power is applied to the winding coil. The winding coil is installed at the inner stator thus to reduce a usage amount of the coil, thereby reducing a fabrication cost of a motor. Also, a resistance of the coil is reduced thereby to enhance an efficiency of the motor.

Abstract: An aligning apparatus includes a moving member, a magnetic member arranged vertically above the moving member, a stator unit which is arranged vertically below the moving member and has a plurality of coreless coils, a first magnet unit which is provided to the moving member and generates a force with the magnetic member, and a second magnet unit which is provided to the moving member and generates a force with the stator unit. The aligning apparatus has no coils between the magnetic member and the moving member.

Abstract: A cable connector assembly used for connecting exterior electrical cables to a motor housing has a hollow cap member with an opening through which the cable extends. A compressible retainer is compressed within the cap, around the cable and is held in place by a pressure member, which is held in place in the cap with a clip. The hollow interior of the cap may be filled with a sealant such as an epoxy in order to provide secondary sealing against moisture in addition to the compression of the retainer around the cable.

Abstract: A brush-less motor includes a rotor with a magnet alternately magnetized N pole and S pole in a rotating direction, and a core with plural salient poles on which coils are wound. The core faces the magnet to form a magnetic circuit. Each one of the salient poles are toothed and provided with small teeth at an edge facing the magnet. The small teeth have a pitch corresponding to two poles of the magnet. Powering to the coil responsive to a rotor position drives the rotor. This structure substantially increases volumetric efficiency of the motor.

Abstract: Superconducting electrical machines, for example motors or generators, especially high-temperature superconducting machines, include a rotor equipped with superconductors, especially high-temperature superconductors. They further include a rotor cryostat, a rotor shaft and a cryostatic link including a cryostatic conductor between the cryostat and a frigorific apparatus, and a non-superconducting stator. The machines are adapted to be resistant to shocks as required for navy ships. The stator, the rotor and the cryostat are motion-decoupled from an outer machine housing and the rotor shaft by elastic elements. In one embodiment, the machine housing is configured as a thruster housing and is elastically linked with the stern of the ship.

Abstract: A rotor device capable of dissipating heat and resisting foreign objects includes a hub and a shield case. The hub has a closed wall and a hub wall connecting with the closed wall and the closed wall at least has a hub hole. The shield case is mounted in the hub and has an upper wall neighboring the closed wall and a circumferential wall connecting with the upper wall. The upper wall at least has a through hole offsetting the hub hole to allow the fluid passing through the hub hole and the through hole for performing heat dissipation and preventing the foreign objects from falling into the shield case via the hub hole and the through hole.

Abstract: In a stepping motor comprising a pair of stator yokes and a bobbin that includes a cylindrical body and two flanges, each of the two flanges radially extending outward from the cylindrical body so that the bobbin forms a squared U-shape in the axial cross-section thereof, there is provided a bobbin cover case disposed between the stator yokes and a coil wound around the bobbin, and the bobbin cover case includes an outer cover and an inner cover that are coupled to each other so as to provide a dual-layer insulating wall covering an open mouth portion of the squared U-shape, wherein the bobbin cover case inhibits a creeping discharge between the stator yokes and the coil.

Abstract: A commutator for an electric motor includes a support ring, a plurality of metal segments arranged around a circumference of the support ring, and a plurality of capacitors arranged between the support ring and the metal segments. Each capacitor is connected between two adjacent metal segments.

Abstract: An interconnection assembly has phase parts for U phase, V phase and W phase. The phase parts each are of a plurality of interconnection assembly parts that are connected in the form of a ring and include a conductor section to which a motor coil wire is connected, the conductor section being formed by stripping fluororesin insulation at a predetermined position, and the phase parts are partially fixedly bundled.

Abstract: A bicycle gearshift system is mounted on the rear part of the frame of the bicycle. The bicycle gearshift system includes an electrically powered rear derailleur, a rear hub, a charger part, and a gearshift control part. The electrically powered rear derailleur is mounted on the rear part of the frame. The rear hub is also mounted to the rear part of the frame. The rear hub has an electrical generator mechanism that generates electricity through the rotation of the wheel. The charger part is mounted on the rear hub and stores the electrical energy that was generated by the generator part. The gearshift control part is equipped on the electrically powered rear derailleur, where gearshift control of the electrically powered rear derailleur is performed through the energy that is stored in the charger part.

Abstract: An electric motor includes a motor casing, a stator assembly, a rotor shaft assembly, first and second end bells, respectively, attached to each end of the motor casing, and an electrical inlet in the motor casing for supplying power to the motor. The motor further includes a first bearing assembly housed in the first end bell and a second bearing assembly housed in the second end bell. Both bearing assemblies and support the rotor shaft assembly and seal the interior of the motor casing from moisture. The motor also includes a heat-conductive solid resin that encapsulates the stator assembly.

Abstract: A metal-graphite brush for supplying electricity to a coil wound around a core provided at a rotor of a motor is made of sintered material having porosities at a surface of, or inside, the sintered material. The metal-graphite brush is infiltrated by a liquid containing a plurality of kinds of glycol ether having varying numbers of alkylene oxide structure units. The liquid has a boiling point higher than that of water.

Abstract: A stator device in a motor includes a magnetism guiding part, a magnetizing part, a coil seat, a circuit board and a support part. The magnetism guiding part has a split opening straightly extending along the length thereof and a projection is provided at a specific spot of the circumferential edges of the central through holes of the magnetizing part, the coil seat and the circuit board respectively to engage with the split opening. A stem extends upward from the support part to fit with the inner wall surface of the magnetism guiding part.

Abstract: A brush holding plate includes cartridges and brushes, which are guided into the cartridges. The brushes are guided in a spring-loaded manner in the radial direction towards a central opening in the brush holding plate. The cartridges are arranged on the brush holding plate in such a way that they can be displaced from a radially outer pre-assembly position into a radially inner end assembly position.