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.

Abstract: A vertically carrying apparatus comprising a carrying capsule that has a space for accommodating an object which is to be carried, the capsule incorporating a horizontal superconducting coil, and armature coils that are vertically arranged side by side outside the carrying capsule, wherein upward thrust force is obtained by a correlation between a persistent current that flows in the superconducting coil and magnetic fields that are produced around the armature coils.The vertically carrying apparatus further comprises a coil support device which includes the superconducting coil, a coil support member that supports the superconducting coil, a helium vessel that accommodates the superconducting coil and the coil support member and that also supports the coil support member through an oscillation preventing member, and a vacuum vessel that accommodates and supports the helium vessel.

Abstract: A motor connection block of the aforementioned type wherein a plug insert is constructionally integrated in a motor terminal box and the socket insert is so constructionally arranged in a terminal box cover that the motor terminal box functionally forms a plug casing and the terminal box cover functionally forms a casing for the socket part and serves as a carrier for one or more cable screw joints.

Abstract: A motor oil-filled protector device for use with an electric submergible pump motor, includes a tubular extension to inhibit contaminated fluid from contacting an internal pressure relief valve. A motor oil pressure relief valve within the protector has an intake in fluidic communication with at least one motor oil-filled expandable chamber and has a discharge in fluidic communication with a fluid-filled section of the housing. Over a period of time, wellbore fluids tend to leak into and displace motor oil within the fluid-filled section. A tubular extension is connected to the discharge of the pressure relief valve and extends into a lower portion of the fluid filled section. When motor oil is discharged from the pressure relief valve, such motor oil will tend to stay within the tubular extension, because the oil is lighter than the wellbore fluids, and thereby inhibit the wellbore fluids from contacting and possibly harming the operation of the pressure relief valve.

Abstract: A miniature motor with worm reduction gear outputting the revolution of a miniature motor via a worm reduction gear consisting of a worm and a worm wheel, in which the tooth surface of the worm is roughened into a stain finish, and then subjected to a surface treatment to improve wear resistance.

Abstract: A rotor for short-circuited alternating current motors, having a pack of circular rotor blades fixedly mounted on a shaft, the plates have, uniformly around the peripheral edges thereof, a number of recesses which, when the plates are packed, form generally axially extending rotor slots, and each rotor slot includes a first recess or cavity whose peripheral edge forms a closed contour and which accommodates a conductor radially inwards of the mantle surface of the rotor, the peripheral edge of said first recess has a concavity which faces towards said peripheral edge, and a second recess which forms a radially extending slot which extends from a point close to the concavity and out towards said peripheral edge, a bridge is formed between the first recess and the second recess, and the second recess has a widened part which is located between the concavity of the first recess and the peripheral edge.

Abstract: This invention is for magnetic actuators which are composed of individually controlled layers. Each layer comprises a stationary sheet 34, a movable sheet 30 and a roller 40 between the sheets. Each layer may either have ribs 32 or sheet portions having conductors, remanent portions or permeable portions which apply a magnetic force against the roller to move the sheets. The magnetic force may be between a current carrying roller and a current carrying rib or sheet portion, a current carrying roller and a remanent rib or sheet portion, a current carrying roller and a permeable rib or sheet portion, a magnetic roller and a current carrying rib or sheet portion, or a permeable roller and a current carrying rib or sheet portion. The sheets in each layer may be moved in parallel or normal directions. When the layers are stacked, actuators may be made. The actuators can be controlled in pairs or larger groups to position and move objects and motor shafts. Thus motors generators and actuators can be made.

Abstract: A magnetic motor is shown having magnetic members situated in relatively close proximity to each other; relative movement between the magnetic members is brought about by bringing the temperature of at least one of the magnetic members to the curie temperature thereof, and subsequent relative movement between the magnetic members is brought about by having the temperatures of all of the magnet members less than the curie temperatures thereof.

Abstract: The present invention concerns a polyphase electromagnetic transducer, the rotor (4) of which has a multipolar permanent magnet (10) including an even number of magnetic pole pairs (14) oriented along the direction of the rotation axis of such motor (4). First and second principal stator parts (22 and 24) extend respectively from either side of a rotor plane defined by the multipolar permanent magnet (10). The first principal stator part (22) defines at least three principal magnetic poles (30, 31 and 32) and secondary magnetic poles (38), these latter being defined by teeth (40) superposed onto the multipolar permanent magnet (10).

Abstract: A linear electrodynamic machine is disclosed having non-axisymmetric, interdigitating interfaces between moving and fixed magnetic circuit elements. The moving magnet elements may be of permanent magnet or electromagnetic construction, and in one embodiment constitute low reluctance elements moving relative to fixed energizing and output coils. Magnetic elements on a reciprocating plunger couple to fixed elements of a magnetic circuit in an interdigitating manner. Alternators and motors with non-axisymmetric, interdigitating interfaces are disclosed.

Abstract: A counterweighted rotor for use in a compressor assembly, the counterweighted rotor including a core assembly, an end ring defining a first end of the rotor, an end ring defining a second end of the rotor, each end ring having a plurality of coining lugs integrally cast thereto, the coining lugs sized for securing weights to the rotor, a plurality of counterweights for balancing the rotor, each of the counterweights including a body formed from powdered metal, the body having an aperture on its radial edge for engaging a coining lug, and a lip integrally formed on the counterweight porprotioned for contour fitting with the inside diameter of the rotor end ring. A method of forming counterbalanced rotor employs forming weights from powdered metal, the counterweights attaching to the rotor by coining over a coining lug of the rotor end ring through an aperature in the counterweight body.

Abstract: A motor assembly has a lead guard detachably disposed within a housing adjacent a conductor receiving opening formed therein. The lead guard defines a space within the motor housing into which a conductor may be routed. The guard has a generally flat portion and an upstanding portion connected at an angle thereto that extends around three of four perimetral edges of the flat portion. A mounting mechanism is provided to position the lead guard within the housing of the motor. A guide mechanism for guiding conductors fed through the conductor receiving opening into the space defined by the lead guard may also be provided. This guide mechanism may be attached to or integrally molded with the generally flat portion of the lead guard and may include an angled/ramped portion, the edge of which abuts the inner surface of the housing below the conductor receiving opening to prevent conductors from entering the motor housing and coming in contact with rotating components disposed therein.

Abstract: The invention relates to an electric drive unit for adjustment systems in motor vehicles, more particularly for an electrically operated window winder. The electric drive unit comprises an electric motor, a gear unit into which the extended motor shaft of the electric motor projects, and a current unit with a plug or adequate solder spots. The current unit is designed as an intermediate rail for connecting the electric motor and gear housing. When using a commutator motor, the brush holder of the commutator motor is incorporated in the intermediate rail. The intermediate rail preferably forms a structurally uniform block with the plug, and, when additionally using an electronics unit, also with the electronics unit.

Abstract: A rotor for an alternating current generator of the Lundell type. The rotor shaft carries two segments which have interleaved pole teeth. The rotor has a core member and a field coil disposed about the core member. The segments and/or core member are formed of compressed powder iron particles having a particle size in a range of about 10 to 250 microns. In the manufacture of the core and/or segments the iron powder particles are coated with a thermoplastic material and this thermoplastic coated iron particle material is compacted in the molding dies of a press. After compaction to the desired shape, the part is sintered at a temperature of about 2050.degree. F. to burn-off the thermoplastic material that coated the iron particles.

Abstract: A motor drive apparatus for an electric vehicle has a case attached to a vehicle body; an output axle which rotates relative to the case; an electric motor having a magneto stator secured to an inside wall of the case and a rotor which faces the magneto stator with a predetermined clearance and rotates relative to the case; and a planetary gear unit provided inside of the rotor and consisting of three components of a sun gear, a ring gear and a carrier. The electric motor speed is output from the output axle through the planetary gear unit.

Abstract: A collector terminal and hydrogen seal assembly for insertion within a radial hole in a generator rotor and connectable to a conductor bar located within an axial bore formed in the rotor, the seal assembly comprising a substantially cylindrical terminal stud portion having threaded upper and lower sections and a smooth intermediate section; insulation wrapped about the intermediate section; a spacer block located between the seal elements and defining an annular space surrounding the insulation; and a conduit in the terminal stud adapted to introduce compressed air from outside the generator rotor to the annular space for testing the integrity of the seal elements.

Abstract: Device equipped with an electric drive motor (3) and with a body (2) on which a stator of this motor is mounted, characterized in that it comprises a casing (10) immovably attached to said stator (5, 6) and constituting together with the latter an autonomous statoric sub-assembly (13) which is protected against outside aggression and is provided with two diametrically opposed mounting tracks to mount said autonomous statoric sub-assembly (13) on said body (2), one track making it possible to orient the electrical connection terminals or pins (11) of a electric winding (6) of this stator towards the forward section of the device and one track making it possible to orient them towards the rear of this device.

Abstract: A plurality of stepper motors, each of which comprises a stator assembly and a rotor, are axially aligned to form with a control system an encoder for use in a printing apparatus. The rotors constitute print wheels which support different print characters. The stator assembly of each motor only extends above a part of the circumference of the associated rotor. This enables the axial extent of the print wheels to be reduced, A sensor arrangement is provided to enable the home position of each wheel to be determined. In operation, the control system receives desired print character information and rotates the associated rotor to the correct position for printing to take place. Once all rotors have been rotated to their desired position for printing, printing can then take place. The arrangement enables the printing process to run faster than previously.

Abstract: Disclosed is a dc motor comprising a motor frame; a flexible magnet fixed on the motor frame; a rotor having a rotor core, the rotor core having windings and confronting the flexible magnet; a rotating shaft for rotating integrally with the rotor; a commutator secured to the rotating shaft; a brush body coming in slidable contact with the commutator and supplying power to control driving of the rotor; a brush body holder, made of an insulating resin, for holding the brush body; and an engaging device for engaging the brush body with the flexible magnet.

Abstract: The invention provides a method and apparatus for precise modulation of a reference current. A current generating apparatus in accordance with the invention is provided on an integrated circuit chip and includes a series connected chain comprising in the recited order: (a) an externally-set reference current source; (b) a current-to-voltage (I/V) converter for converting the reference current into an on-chip reference voltage, V.sub.ref ; (c) a voltage-to-current (V/I) converter for converting the reference voltage V.sub.ref into an on-chip, internal reference current I.sub.iref ; (d) a single-ended, voltage-operated current switch for modulating the internal reference current I.sub.iref to produce therefrom a modulated current signal, I.sub.M ; (e) a current-driven filter which receives the modulated current signal I.sub.M and produces therefrom a filtered voltage signal, V.sub.F ; (f) a voltage-to-current (V/I) converter for converting the filtered output voltage signal V.sub.