Abstract: A power generator includes a base assembly that has a lower portion and an upper portion. The lower portion is for supporting the upper portion of the base assembly. A solar assembly is coupled to the upper portion of the base assembly. A power storage assembly is operationally coupled to the solar assembly. The power storage assembly is for storing electricity from the solar assembly. The power storage assembly is positioned with in the lower portion of the base assembly such that the lower portion of the base assembly is for protecting the-power storage assembly from adverse weather. A turbine assembly is coupled to the upper portion of the base assembly. The turbine assembly is for producing electricity from wind. The turbine assembly is operationally coupled to the power storage assembly such that the power storage assembly is for storing electricity produced from the turbine assembly.

Abstract: The present invention relates to an external rotor motor for a treadmill. A supporting shaft extends between mounting brackets. A coil stator is installed in the middle of the supporting shaft. Rotation seats are fitted to both sides of the coil stator by means of bearing, respectively. A belt wheel is arranged at one side of the rotation seat. An external rotor is arranged around the coil stator by means of both rotation seats. An annular thickened section is disposed onto the round housing of the external rotor, thereby forming a flywheel type device. Accordingly, processing and material cost of the present invention can be reduced and the treatment of the dynamic balance is performed only one time so that the required precision is easily achieved.

Abstract: A rotor for an electric motor includes a frame previously formed and fixed to a rotational shaft of the motor so as to be rotated with the rotational shaft, and a magnet molded from a molten magnetic resin so as to be disposed at a stator side of the frame and so as to be integrated with the frame.

Abstract: An alternator for use in an automobile includes brackets for supporting a rotation shaft at both sides of a rotor, being thermally connected to a stator for supporting the stator, while one side of the rotor is closed by a bracket. A cooling water passage is provided in the bracket, a cooling fan is provided on the closed side of the rotor, and a cooling fin provided opposing to the cooling fan and in vicinity of the cooling water passage, thereby enabling cool down of the stator and the rotor, effectively, with low noises, and thereby obtaining a high power output.

Abstract: An alternator comprises a brush holding assembly holding brushes within a holding portion and being provided with a cover capable of being opened to remove the brush; and a cap which is disposed on an open portion for removal and insertion of the brush, the open portion being formed at a position on the case facing the cover. The removal and insertion of the brush is performed through the open portion with the open portion opened.

Abstract: A motor synchronous excitation brake that shortens the braking time and promotes braking accuracy, comprised of a brake and a motor, the motor having a casing adapted with an exciting coil and a rotor with a shaft, and two end caps each adapted with a braking shoe being respectively provided on both ends of the casing; and the brake being provided between both ends of the rotor and those two end caps, the brake disk being activated synchronously be an excitation coil to apply braking when the motor stops characterized by having two inclined wedges being respectively extending towards the rotor from the outer circumference of a central hole of both brake disks; the wedge being close to the shaft; a graded edge each protruding from the shaft at both ends of the rotor; and a wedge-shaped slot in relation to the inclined wedge on the graded edge to increase excitation area and shorten braking distance and moment.

Abstract: A rotation shaft support structure of a motor includes a shaft tube having an inner wall provided with at least one bearing. A seal member made of metallic material is securely combined on one end of the shaft tube. A support member made of a wear resistant non-metallic material is supported by the seal member. The support member has a resting portion, and one end of the rotation shaft may be rested on the resting portion to rotate in the bearing.

Abstract: The resistive power leads of a high temperature superconducting (HTS) rotor field coil are located in vacuum near the rotor axis and are cooled by thermal conduction to the return flow path by bonding the leads to the tubing bulkhead through ceramic insulators. The lead length, cross-section and electrical resistivity are optimized for minimum heat conduction and ohmic resistance heat transfer to the cold gas. Thermal expansion or contraction of the leads is accommodated by flexible sections at the warm and cold end of the leads.

Abstract: An annular member 51 is fitted to the outer periphery of the stator cores in a rotating electric machine. The rotating electric machine has a cooling passage 29 in an axial direction between a resin molded section 50 and adjacent stator cores 20. The annular member 51 is formed from a material which has a larger coefficient of linear expansion than the magnetic material comprising the stator cores. At low temperatures, stress resulting from the differential between the coefficient of linear expansion of the stator core and the resin molded section is reduced because an inward compressive force is applied to the stator core by the annular member as a result of the difference in the coefficient of linear expansion.

Abstract: An axial directional gap type eccentric rotor having a stop position maintaining unit includes a commutator in which at least one air-core armature coil is arranged, a arc-shaped protruding portion installed at the outer circumference of the commutator so that at least part thereof faces the outer circumference portion of a donut-shaped magnet at the side of a stator, and an arc-shaped weight having magnetism arranged at least at part of the arc-shaped protruding portion. Thus, cost is lowered by reducing the number of the air-core armature coils. The loss of the main magnetic flux is prevented, without sacrificing a gap, by installing a weight having magnetism at a leakage magnetic flux portion. Also, the eccentric rotor can be moved or stopped at a position where the maximum torque is generated.

Abstract: Arrangements are described wherein fluid is supplied under pressure to lubricate and replenish the fluid film located between the rotating, inner bearing sleeve and the outer, stationary sleeve insert of the bearing assemblies of a motor. The sleeve insert is provided with fluid metering passages that permit lubricating fluid to pass through the body of the sleeve insert. The sleeve insert is disposed radially within a sleeve insert holder, and a fluid gap is defined between the two components. During operation, vibration of the rotor shaft within the stator bore is damped by the fluid spring created by the metering of fluid through the sleeve insert. As a result, friction is reduced and the lifespan of the motor increased.

Abstract: An electric motor comprising a coiled rotor whose windings are energized by way of a commutator, a stator comprising a cylindrical shell in which is disposed a brush-carrying ring and an end flange fixed to the shell, the ring supporting two electrical supply brushes each associated with an elastic pressure member, each of the brushes and the respective elastic member being displaceable between a standby position, prior to the complete assemblage of the motor, in which the brush is separated from the commutator, and a working position, in which the brush bears on the commutator and the elastic member exerts a radial force on the brush directed towards the commutator. The flange comprises a projecting member corresponding to each brush, adapted so as to displace the brush and the respective elastic member from their standby position to their working position, when assembling the flange onto the shell.

Abstract: A wound rotor 10 for an electric motor has a shaft 12, an insulating spacer 28 fitted to the shaft, a rotor core 18 and commutator 20 fitted to the spacer and windings 24 wound around poles of the rotor core and terminated on the commutator. A first end of the spacer 28 remote from the commutator 20 has an axially extending recess forming an annular space 30 with the shaft 12. A winding shield 32 having a tubular portion 34 and a radially extending portion 36 is fitted to the shaft 12 such that the tubular portion 34 is located within the annular space 30. The winding shield increases the electrical clearance distance and creepage distance between the windings and the shaft and/or bearing located on the shaft adjacent the shield.

Abstract: In the magnet retention channel arrangement for a high speed rotor described in the specification, a rotor has an array of radially projecting, angularly spaced pole pieces and a magnet retention channel member inserted between each adjacent pair of pole pieces. Each magnet retention channel member is made of nonmagnetic material and has opposed side walls and an integral end wall at one end of the side walls and integral dovetail feet at the opposite ends of side walls. The channels contain permanent magnets and the side walls of uniform thickness with nonmagnetic feet within the core member couple the magnetic flux from the magnets to the pole pieces with substantially no magnetic discontinuities while the presence of the nonmagnetic end wall avoids magnetic shorting.

Abstract: An end assembly for a miniature motor. The end assembly including a brush base, a pair of brush arms supporting brushes, and a cover plate supporting a rotor bearing. The end assembly fits into an open end of a cylindrical motor housing.

Abstract: A stator core-end of an electric generator utilizes amorphous metal laminate packages to reduce eddy currents and heating in the stator core thereby increasing generator capacity. The packages are formed as complete units before installation into the stator core. The amorphous metal laminate packages comprise alternating layers of amorphous metal laminates and non-amorphous metal laminates.

Abstract: An adaptive wave motion electrical power generation method and system are provided. An alternator, floating freely at a water's surface, has magnet and wire coil structures that undergo relative movement therebetween in response to wave motion at or near the water's surface thereby causing electric current to flow through the wire coil structure. Dynamic parameters (e.g., relative acceleration, velocity or displacement) describing the relative movement between the magnet and wire coil structures are measured. Also measured are the electric current flowing through the wire coil structure and voltage thereacross. The amount of electric current flowing in the wire coil structure and delivered to the load is controlled based on the dynamic parameters.

Abstract: This invention prevents leakage of cooling medium from a cooling passage in the interior section of a slot of a stator. Coils are housed in the slot of the stator core. The openings of the slot are covered in order to form a cooling passage in the slot. An end plate is disposed on the end of the stator. The stator core and the end plate are integrated by winding coils through the outer side of the end plate. A cylindrical member which projects along the inner peripheral face of the stator from the end of the stator is formed by resin molding to be integrated with a section of the end plate. A ring-shaped space which introduces cooling medium is formed on an outer peripheral side of the cylindrical member and is connected with the cooling passage.

Abstract: In the magnet retention channel arrangement for a high speed rotor described in the specification, a rotor has an array of radially projecting, angularly spaced pole pieces and a magnet retention channel arrangement inserted between each adjacent pair of pole pieces. Each magnet retention channel arrangement has ferromagnetic side walls and a nonmagnetic alloy cap and nonmagnetic alloy dovetail feet affixed to opposite edges of the ferromagnetic side walls by welding or by a hot isostatic pressed powder metallurgy technique. The channels contain permanent magnets and the ferromagnetic side walls couple the flux from the magnets to the pole pieces with substantially no magnetic discontinuities and the nonmagnetic alloy cap and nonmagnetic core avoids magnetic shorting.

Abstract: A motor is provided which is configured to have at least a portion thereof received in an interior of a cover to reduce noise of the motor. The interior is defined by an inner peripheral surface of the cover. The motor includes a generally cylindrical housing having a closed end and an opened end disposed opposite the closed end. A brush card assembly is provided and includes a brush card and a cover support structure coupled with the brush card. The brush card and cover support structure close the opened end of the housing. The cover support structure has a plurality of resilient members extending from the opened end towards the closed end of the housing, with each resilient member being generally adjacent to an outer surface of the housing and being biased away from the outer surface of the housing.