Abstract: A magnetic bearing system (24) supports a shaft (20). The bearing system (24) includes a magnetic rotor (34) and a stator element (36) positioned in proximity to the rotor (34). A plurality of first electromagnets (40, 41, 42) are mounted in the stator element (36). The first electromagnets (40, 41, 42) are of relatively large size to provide high load bearing capacity. A plurality of second electromagnets (44, 45, 46) are mounted in the shator element (36) in spaced relation with the first electromagnets (40, 41, 42), the second electromagnets (44, 45, 46) being of relatively small size to provide high frequency response. Displacement sensors (56, 57, 58) sense position of the shaft (20) relative to the stator element (36). A controller (60) is coupled to the displacement sensors (56, 57, 58) and the electromagnets (40, 41, 42, 44, 45, 46) for controlling current thereto.

Abstract: A high efficiency multi-phasic type DC motor incorporating brushless electronic switching to phase the attractive and repulsive forces between the permanent magnets in the rotor and wire wound air core coils in the stator. The unequal number of magnets and coils provides a designed imbalance, so that proper energization induces rotation and torque in the motor's dual flywheel rotor. Electronic switching collects inductive kickback and back emf simultaneously during the motor phase and in addition, disconnects the attraction and repulsion phases during regenerative braking, etc. and directs all this generated power back to the power pack where it is stored in batteries and capacitors. The rechargeable batteries and capacitors in the power pack are the source of operating electrical power for the motor.

Abstract: A brush holder body for a dynamoelectric machine comprising a molded body, integrated cantilever fingers molded into the body, the cantilever fingers extending radially inward from distal portions of the body, the cantilever fingers having a normal position into which they are molded extending at an angle to a plane of a commutator clearance opening the angle having a direction extending away from a motor armature position, wherein the cantilever finger is flexible and upon receipt of a force, flex in the direction of the armature, wherein the brush holder also comprises a snap feature for retaining the cantilever finger in a second position in which the cantilever finger prevents movement of a brush into the commutator clearance opening, wherein in the normal position, the cantilever finger allows movement of the brush into the commutator clearance opening and the cantilever finger does not contact a commutator of the dynamoelectric machine.

Abstract: A motor mount for an electrical motor comprising a pair of identically configured supporting members each having a motor-contacting concave face. Each supporting member has parallel sides with holes formed therein to receive a fastener when holes of one supporting member are aligned with holes of the other supporting member. The supporting members are mutually adjustable to move the contact faces toward or away from one another in order to conform to different size motors.

Abstract: In a permanent magnet rotor, the circumferential gaps between circumferentially spaced sintered or cast magnets are filled by a plastic or resin material which also coats the outer circumferential surface of the magnets to secure the magnets to the rotor base. The plastic or resin material has a filler of particulate permanent magnet material to thereby provide a more gradual circumferential variation in magnetic flux between circumferentially adjacent magnets.

Abstract: A motor has an end play insert which is installed within a tunnel of a housing proximate with an end of an armature shaft. This insert is installed a predetermined distance into the tunnel so as to set the armature shaft in a selected and consistent longitudinal position relative to the housing, thereby accurately controlling the end play of this armature shaft.

Abstract: In order to provide a power recovery plant comprising a gas turbine with a turbine wheel and a generator with a rotor driven by the turbine wheel, in which the known bearing problems are diminished or even cease, it is suggested that the turbine and the generator be combined in a plant housing to form one unit, that the turbine wheel and the rotor form a rotor unit rotating as a whole and that the rotor unit be rotatably mounted in the plant housing by magnetic bearing units in a non-contact manner.

Abstract: An apparatus, and methods of making and using the apparatus, including at least a first path of magnetic flux perpendicular to and penetrating a first plane in space; preferably, a second path of magnetic flux perpendicular to the first plane and having a gradient such that no net flux passes the first plane; and a passive first null flux coil adjacent to the first plane; whereby when one of the first null flux coil and a combination of the paths is moving, the first null flux coil and the paths, combinatorily, are magnetically induced into alignment with respect to the first plane.

Abstract: A superconductor magnetic bearing includes a shaft (10) that is subject to a load (L) and rotatable around an axis of rotation, a magnet (12) mounted to the shaft, and a stator (14) in proximity to the shaft. The stator (14) has a superconductor thin film assembly (16) positioned to interact with the magnet (12) to produce a levitation force on the shaft (10) that supports the load (L). The thin film assembly (16) includes at least two superconductor thin films (18) and at least one substrate (20). Each thin film (18) is positioned on a substrate (20) and all the thin films are positioned such that an applied magnetic field from the magnet (12) passes through all the thin films. A similar bearing in which the thin film assembly (16) is mounted on the shaft (10) and the magnet (12) is part of the stator (14) also can be constructed.

Abstract: A magnetic coupler has a magnetic disc containing permanent magnets located between two electroconductive plates and separated therefrom by air gaps. The magnetic disc and electroconductive plates are mounted on coaxial or parallel-spaced input and output shafts so that rotation of the input shaft causes rotation of the output shaft by way of magnetic friction between the permanent magnets and the electroconductive plates.

Abstract: A magnetic coupler has a magnetic disc containing permanent magnets located between two electroconductive plates and separated therefrom by air gaps. The magnetic disc and electroconductive plates are mounted on coaxial or parallel-spaced input and output shafts so that rotation of the input shaft causes rotation of the output shaft by way of magnetic friction between the permanent magnets and the electroconductive plates.

Abstract: A braking system adapted to be used on the drive shaft of a vehicle has a rotor containing permanent magnets mounted on the shaft and preferably has a pair of non-rotary electroconductive plates separated by air gaps from the rotor on opposite sides thereof. The plates are slide mounted in a controlled manner on the vehicle chassis to vary the air gaps between brake-on (relatively narrow gap) and brake-off (relatively wide gap) positions.

Abstract: A brush holder apparatus and method for biasing a brush outwardly of a brush box. A brush box cover is slidingly disposed over an electrical cable along with a coil spring. Next, a brush shunt is electrically secured to an end portion of the electrical cable by a crimp member. The brush box cover is then slidably urged towards a brush secured at a terminal end of the brush shunt. This causes the brush shunt to be folded so as to place it in general longitudinal alignment and parallel with the electrical cable. The brush box cover is then further slid along the electrical cable, thus urging the spring over the brush shunt and into engagement with the brush electrically secured at the terminal (i.e., outer) end portion of the brush shunt. The brush box cover is further slid along the electrical cable until the crimp member and a portion of the brush shunt become wedgingly engaged in a portion of the brush box cover, to thereby hold the spring in a compressed condition between the brush box cover and the brush.

Abstract: The present invention is intended to improve the mass-productivity of equipment having magnetic bearings at the time of its manufacture, and to facilitate after-sale service of equipment having magnetic bearings after the time when either of a magnetic bearing control apparatus and a structure having a rotor has gotten out of order and is exchanged or repairs. In the magnetic bearing arrangement according to the present invention, due to the fact that a portion (a central position (off-set) regulator 8, a positional feedback gain adjuster 9 and a filter 10) of control elements of a magnetic bearing control apparatus 1 is placed outside the magnetic bearing control apparatus 1 as such, for instance, inside the structure having the magnetic bearing, some factors restricting the interchangeability between the magnetic bearing control apparatus 1 and a structure (such as a casing) 2 having a rotor are eliminated.

Abstract: A drive has a hub with first and second end portions and a shoulder located thereon. An armature and sheave assembly is located on bearings on the hub first end portion. The armature forms a cavity for receiving an electromagnet, which abuts against the shoulder. Slip rings are coupled to the electromagnet by way of a fan and a slip ring shaft. The slip rings, which are adjacent to the second end of the hub, can be of a small diameter to extend brush life. In addition, the same size slip rings can be used on different sizes of the drive. Two piece brush holders are provided for each brush. Each brush holder can be disassembled into its respective pieces for cleaning. The brush holders and slip rings can be protected from the environment by a cover.

Abstract: A geared motor includes an electric motor which drives a wheel actuating a direction reversal mechanism, this direction reversing mechanism actuating the output shaft of the geared motor.According to the invention, the wheel has fixed thereto a driving device connecting the direction reversal mechanism to the wheel.

Abstract: A single-phase ECM in a radial flux configuration has parking magnets situated on both ends of its rotor and parking lamination extensions situated on its stator, such that the parking magnets and parking lamination extensions interact to provide sufficient starting torque from rest at predetermined parking positions. As a result, the parking and torque production functions in the ECM are separated; and the ECM has good starting capability while operating at relatively high torque production and efficiency with minimal torque pulsations and noise.

Abstract: A brush/shunt assembly for an electric motor is provided. The shunt portion of the assembly is a stranded wire shunt with a joined (e.g., fused) end that can be easily inserted into a slotted terminal. A lubricant can be added to reduce insertion forces.

Abstract: A device for providing a low-cost mounting arrangement for a hall effect device to sense the speed of an electric motor. The device uses a plastic base fixed to or integrated into the motor bearing support and designed to hold a standard mass termination connector, hall effect device and leadwire harness which passes digital information to a circuit board for motor speed control.

Abstract: A brushless motor comprises a bearing rotatably supporting a spindle and a rotor mounted on the spindle. A drive magnet rotates integrally with the rotor. A stator core is disposed to face the drive magnet and has a drive coil wound thereon. A base plate is included on which the stator core is mounted. A bearing holder is provided for holding the bearing, which engages the base plate. A fixing plate is arranged for positioning and fixing the bearing holder and the stator core on the base plate. A fastening member is arranged for fastening the fixing plate to the base plate with bearing holder disposed between the base plate and the fixing plate and with the fixing plate engaged with the bearing holder.