Abstract: A magnetic bearing assembly is disclosed which provides for correction of shaft deflection, or "bowing", during rotation of the shaft. The assembly comprises two stator rings in spaced relation to each other, and each stator ring comprises a plurality of stator sections which are independently activated. When the shaft "bows", sensors detect the deflection and independently activate the various stator sections producing a force couple which acts on the rotor to produce a bending moment in the shaft which tends to counteract the "bowing".

Abstract: A face opposing type motor has a rotor yoke fixed to a hollow rotating shaft disposed in a non-contact bearing device; the non-contact bearing device having a fixed shaft inserted into the hollow rotating shaft; a rotor magnet held by the rotor yoke; and a driving coil substrate having a face opposed to the rotor magnet. The rotor yoke has a rotor magnet fitting portion fitted to an outer circumferential face of the rotor magnet so as to hold the rotor magnet by this rotor magnet fitting portion. In accordance with such a structure, it is possible to provide a reliable face opposing type motor having an excellent quality and cheaply manufactured by improving a system for holding a rotor magnet.

Abstract: The invention proposes a drive unit for a windshield wiper in a motor vehicle, of the kind including an electric motor disposed in a motor housing open at one of its axial ends, a blade-carrier support disposed inside the motor housing close to its open end, a reduction gear mechanism disposed in a reduction gear housing, one portion of which forms an end plate for closing the open end of the motor housing, and of the kind comprising electrical connection for the drive unit which include electric contacts which are accessible from outside the drive unit; wherein the electric contacts and the blade-carrier support are arranged in a connection module disposed inside the motor housing close to the open end thereof, and the closing end plate includes a window open to the outside of the reduction gear housing and which extends opposite the electric contacts of the connection module.

Abstract: A valve head is actuated by a resetting spring, on one hand, and on the other hand, by the rotor of a motor acting upon a screw and nut assembly. The rotor of the motor is axially coupled to a plunger of an electromagnet. Said valve head, the rotor of the motor, and said plunger of said electromagnet are thus jointly displaceable in the axial direction. In the resting position, or in the case of a power breakdown, said valve is closed by a spring, and said rotor as well as said plunger of said de-energized electromagnet are axially displaced. In the working position, said plunger is attracted and maintained in its working position by a pole piece of said electromagnet, and said rotor is also maintained in its working position in order to regulate the position of said valve head by means of said screw and nut assembly.

Abstract: A bridge rectifier assembly includes: a self aligning cloverleaf shaped diode header which sandwiches each diode chip; a semi-circular heat and electrically conductive plate accommodated with receptacles to position the cloverleaf diodes; a heat and non-electrical conductive insulator; a finned heat and electrical conductive extrusion with similar receptacles to position the cloverleaf diodes; an articulated terminal to provide thermal and mechanical stress relief executing an electrode function adhered to the cloverleaf diode header; and a molded insulated integument with embedded electrical conductors of a cantilevered configuration to further alleviate thermodynamic and mechanical stresses. A second embodiment repeats the first embodiment, and includes a heat and electrical conductive plate that is larger in area and with the extrusion succeeded by a second plate of identical outline as the first.

Abstract: A brushless shaft mounted eddy current drive has a coil mounted to bearings by way of a coil mount. The bearings are located on a hub. The coil mount is anchored to a fixed object. The pole pieces are coupled together by a nonmagnetic material to form a cavity that receives the coil. In another embodiment, a brushless drive has a coil rotatably mounted in a cavity within the pole pieces. A rotary inductive coil is mounted to the pole pieces about a stationary inductive coil. Alternating current is provided to the stationary coil to induce current into the rotary coil. In still another embodiment, an alternator is used to induce current into the rotating coil. In a still further embodiment, a brushless drive incorporates a liquid conductive rotatable coupler in the hub.

Abstract: A control circuit for a gearmotor is located internal to a plastic gearbox to reduce handling damage and damage resulting from exposure to the environment. The control circuit includes a metal track which provides an electrical conductive path for input power to an electric motor and electrical components and thereby eliminates the need for a printed circuit board. The metal track includes a plurality of alternative control circuits paths, the appropriate circuit being chosen during assembly of the gearmotor by selectively piercing knock-out tabs in the metal track. The metal track includes locking receptacles for receiving switch and d.c. motor electrical terminals and further includes crimping receptacles for receiving electrical component lead wires. The metal track is located on the internal surface of the plastic gearbox cover by integrally molded posts and is secured to the cover by ultrasonically or heat staking the posts.

Abstract: Object of the present invention is to provide an induction alternating current generator on vehicle and a method for generating alternating current in a generator on vehicle, which improve the efficiency of the generator by increasing magnetic flux permeating a stator core.Second electromagnetic exciting means for generating magnetic field in the direction of repelling the leak magnetic flux between neighboring claw poles, are provided in the spaces formed by the neighboring claw poles engaging each other at a gap and first electromagnetic exciting means provided inside a pair of the rotor cores of the induction alternating current generator on vehicle.

Abstract: An energy storage device which comprises at least a first object having a rotational mechanism which rotates around an axis and a surface which generates a magnetic field; at least a second object comprising a superconductor and having provided separately from said first object but facing said surface which generates a magnetic field; a device which provides a rotational energy to the first object by exerting an electromagnetic reaction to said first object; and a device which converts the rotational energy of the first object into an electric energy; provided that the first object is substantially levitated at its use, and that said first object uses no mechanical support device.

Abstract: A motive power generating device comprises a permanent magnet disposed around a rotational output shaft for rotation therewith, the output shaft being mounted on a support member for rotation, a magnetic body disposed in concentric relationship with the permanent magnet for rotation with the rotational output shaft, the magnetic body being subjected to magnetic flux generated by the permanent magnet, a plurality of electromagnets fixedly mounted to the support member in such a manner that they are spaced at predetermined distances around the periphery of the magnetic body, each magnetic circuit of the electromagnets being adapted to be independent of one another, and excitation change-over means for the electromagnets, the excitation change-over means being adapted to sequentially magnetize one of the electromagnets which is positioned forwardly with regard to a rotational direction of the rotational output shaft, so as to impart to the particular electromagnet a magnetic polarity opposite to that of the magn

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. In another embodiment, a brushless drive has a coil mounted to bearings by way of a coil mount. The bearings are located on a hub. The coil mount is anchored to a fixed object.

Abstract: A single-phase reluctance motor is constructed so that either the rotor or the stator (or both) has poles in which there are areas of different saturation induction (thereby forming an asymmetric saturation characteristic in these poles), as a result of which an aligned position of the movable member becomes non-aligned at increasing excitation current and the movable member begins to move in a predetermined direction.

Abstract: A small-sized electric motor includes a yoke formed by bending a rectangular metallic plate into an oval shaped tube having a pair of flat parts and a pair of arcuate parts and joining opposite ends of the metallic plate. An end cap is secured on one end of the yoke and a gear casing is secured to the yoke by a tab formed on another end of the yoke. The joining faces of the metallic plate are located away from the center line of an arcuate part of the yoke and jagged faces are formed on the joining faces. The jagged faces are composed only of curved parts and straight parts having inclinations to the axis of the yoke. The end cap is secured by crimping a bendable tab formed on one end of the yoke by burring. A tab for securing the yoke to a gear box is formed by bending a tongue provided on the metallic plate together with notches on both sides of the tongue.

Abstract: The alternator has an annular stationary stator and a rotor concentrically located therein with two, three phase delta windings wound on the stator core. In one embodiment, the two three phase windings are connected together in series for use with two batteries for supplying 12 and/or 24 volts D.C. In this embodiment the two three phase windings are the same and are wound on the segments of the core such that coils of the same number of turns are wound around the same groups of segments. In another embodiment, the two three phase windings are connected together in parallel for use with one battery for supplying 12 volts D.C. In this embodiment, the two three phase windings are different and are wound on the segments of the core such that coils of different turns are wound around the same groups of segments.

Abstract: An explosion-proof type rotating electrical machine having excellent cooling and brush powder discharge capabilities. A drive shaft of a rotor is provided with slip rings for supplying current to a field coil, which is energized through brushes capable of activating the field coil by contacting with the slip rings. The brush compartment incorporated with the brushes and slip rings and the outside of the rotating electrical machine are connected with each other through an air suction path, the brush compartment and an inside space of the rotating electrical machine are connected with each other through an air blowing path, in which a flame stifling wire net is provided.

Abstract: An antifriction bearing includes a fixed ring which comprises a steel containing up to about 10% of residual austenite. An alternator for vehicles includes a stator mounted on a frame, a rotor having its rotary shaft rotatably supported by a pair of bearings on the frame and a drive pulley mounted on one end of the shaft projecting outward from the frame. The outer ring of at least the bearing toward the pulley comprises a steel containing up to about 10% of residual austenite.

Abstract: A linear motor of the type used to control the radial position of a write/read transducer relative to a rotating data storage disk comprises an elongated tubular-shaped permanent magnet which concentrically surrounds and is spaced, by an air gap, from an elongated pole piece of highly permeable material (e.g. steel). A selectively energizable coil, concentrically arranged between the magnet and pole piece, is adapted to move axially in response to an applied current. According to the invention, the pole piece supports a plurality of "shorting rings" made of high conductivity, low permeability material. The shorting rings are embedded in the pole piece so as to be coextensive with the surface thereof. The spaced shorting rings function as a "shorted turn" which operates to reduce the rise time of current applied to the coil without significantly reducing the magnetic flux in the air gap through which the coil is linearly driven.

Abstract: The sensitivity of an induction-type motion sensor having a magnetic circuit with a permanent magnet to small movements is increased by the use of a stator with a core containing a permanent magnet as a fixed part thereof. An electrical coil is wound around the stator and a pendulum-type rotor has a ferromagnetic moving element which, when the motion sensor is subjected to movement forces, passes in and out of the air gap of the stator, thereby alternating the magnetic field in the stator and inducing a current in the electrical coil.

Abstract: There is presented an electric motor having a drive shaft, an armature and commutator fixed on the drive shaft, a metal housing disposed around the armature, permanent magnets disposed between the armature and the housing, and an endframe fixed to the housing. A discrete brush card is fixed to the housing and has a central cylindrical portion for retaining the commutator, and brush tubes extending radially from the central portion. The brush tubes are adapted to retain brushes and brush springs for urging the brushes into engagement with the commutator. The brush card is provided with tab portions having orifices therethrough and elastomeric grommets mounted thereon, the grommets having openings extending therethrough and aligned with the tab orifices. The endframe is provided with posts extending from an end wall thereof. The grommet openings are configured to receive, respectively, the posts to lock the grommets onto the posts.

Abstract: Disclosed is a small-sized electric motor equipped with an improved electric connector, which prevents high forces being exerted on exposed conductors of an insulated wire in the course of insertion or withdrawal of the exposed conductors from the connector housing, thereby preventing the rubbing between the exposed conductors and the terminal contacts of the electric connector.The electric connector includes an actuator. The actuator, when fully inserted in said connector housing, is adapted to push the exposed conductors against the contacts of the contact beams of the terminals, thereby causing the contact beams of the terminals to be forced into the exposed conductors.