Abstract: A small-sized and inexpensive electric motor in which connection of a stator coil is easy, the connecting portion occupies a small space, and stable torque characteristics are obtained by making electric resistance uniform. A coil bobbin is mounted on a magnetic pole of a stator core, and a stator coil is fitted. A lead wire is led to an external diameter side of one end of the stator core. A connecting conductor holder with a common coil-connecting conductor, connecting conductors for each phase and a through hole is mounted on an end of a coil bobbin. The common coil-connecting conductor has connecting terminals projecting in radial directions, and the connecting conductors for each phase have such a cross-sectional area as to equalize electric resistance of each phase after connecting the stator coil. The through hole is formed to allow a bearing-housing portion to be inserted.

Abstract: In an outer rotor type spindle motor for driving a disc with a relatively long axial dimension for mounting a large number of the discs, it is possible to reduce part cost and assembling work cost while increasing a rotational precision. The stator is disposed on an opening surface of a drum portion of the rotor rather than between a pair of bearings within the drum portion. The stator coil end may be led to the outside of the drum portion without passing through the bearing to dispense with the conventional works such as a processing of a shaft, an insertion of a lead wire through a tubular hole and the like. Also, a bush between the drum portion and the bearing, which conventionally causes the degradation of the rotational precision and the increases in the cost for the parts and the assembling work, is dispensed with.

Abstract: An improved alternator system for replacing an OEM Ford IAR alternator system. The improved alternator system includes a rectifier with increased heat dissipation qualities and decreased heat generation qualities and configured to maintain secure electrical connections. The alternator system is further configured to provide optimum electrical output by providing the rotor and the stator with additional turns or windings of heavier gauge wire whereby the alternator is capable of inducing a stabilized output current of at least about 52 amperes of current at about 1600 revolutions per minute of the rotor.

Abstract: To prevent powder caused by wear of brushes from entering a contact chamber, a first stationary contact is electrically connected to a battery and a second stationary contact is connected to positive brushes, wherein a contact bracket is provided to hold the first stationary contact, and a contact chamber cover is provided to interpose and hold the second stationary contact between the contact chamber cover and the contact bracket so that the contact chamber can be kept in an airtight state.

Abstract: A godet for guiding and advancing a yarn with a rotating godet jacket. The godet jacket is mounted to a rotor shaft, which is driven by means of a three-phase motor. The three-phase motor is controlled via a frequency inverter, which is mounted in a housing, whose interior accommodates the electronic subassemblies of the frequency inverter in a stationary and heat transferring manner. The housing of the frequency inverter is firmly connected to the housing of the three-phase motor.

Abstract: An apparatus useful in clamping stator coil windings of a turbine generator includes a retaining platform for extending across a pair of the coil windings positioned in a spaced relation. The retaining platform includes a bore extending therethrough. A connecting insert member is slidably carried within the bore and has a through-hole with separable mating segments for admitting a rod into the through-hole. An elongated rod passes through the through-hole of the connecting insert member, which rod includes a bulbous shaped end dimensioned for passing through the bore of the retaining platform but cannot pass through the through-hole of the connecting insert member. Thus providing tension in the elongated rod biases the platform against the pair of coil windings.

Abstract: A compact bearingless machine drive system includes: a first rotor segment; a first stator segment with the first stator segment including a drive winding and a first control winding; a second rotor segment; a second stator segment with the second stator segment including the drive winding and a second control winding; and a rotor shaft. The first and second rotor segments are attached to the rotor shaft. A common end ring is coupled between the first and second rotor segments. A drive inverter controls the drive winding to generate torque, and first and second control inverters control the first and second control windings to generate radial forces on the first and second rotor segments.

Abstract: An Electro-Mechanical Energy Conversion (EMEC) device and a method of electro-magnetically converting electrical energy to mechanical energy and electrical energy. The EMEC device comprises a stator; a rotor; a direct current power source; a commutator, and flourescent lamps acting as a non-linear, capacitive, voltage-limiting load. Four armature coils of a first magnetic polarity are concentrically mounted on a first side of the outer surface of a non-magnetic cylindrical stator casing, and four armature coils of an opposite polarity are concentrically mounted on an opposite side of the stator casing. Each coil is wound with an average of 6,650 turns of 34 AWG gauge teflon-coated wire. The rotor is constructed of non-magnetic material, and is rotationally mounted in the stator casing. A plurality of neodymium iron-boron permanent magnets are circumferentially mounted on the rotor.

Abstract: A brushless DC motor and drive package is disclosed, including modular subassemblies which are integrated into a single unit. The drive includes power electronic circuitry and related control circuitry which is supported on a circuit board within the package. The circuit board is supported on an end cap of the motor and is housed within the package housing. The end cap supporting the circuit board preferably forms a bearing support recess for receiving a shaft bearing. The resulting package is extremely compact, and reduces or eliminates the need for separate drive circuitry and related support hardware.

Abstract: Disclosed is an engine-driven welding generator using a plurality of neodymium-iron-boron based rare earth magnets and provided with countermeasures for suppressing a rise in temperature of the magnets.

Abstract: An electric motor comprises a stator having a plurality of conductive windings radially spaced about a central axis. The motor includes a rotor located radially inward of the stator and rotationally fixed with respect to a shaft disposed along the central axis. The rotor defines an area in which, upon rotation of the rotor, a low pressure vacuum is created drawing air radially outward, with respect to the rotor, from the area. The rotor also includes an annular plate disposed at a transverse end of the rotor coaxial with the shaft. The annular plate defines at least one hole extending axially through the annular plate and in pneumatic communication with the area. The hole is configured so air is drawn by the low pressure vacuum through the hole to the area.

Abstract: A rotor for a dynamo-electric machine is capable of reducing the leakage of magnetic flux between triangular magnetic poles, making it possible to protect magnets disposed between the triangular magnetic poles from damage. The rotor is equipped with: a rotor coil through which current flows to generate magnetic flux; a field core which is provided such that it covers the rotor coil and which is composed of a first field core member and a second field core member having a triangular magnetic poles, respectively; a plurality of magnets which are disposed between adjacent triangular magnetic poles and which have been magnetized in a direction so as to reduce the leakage of the magnetic flux between the triangular magnetic poles. Each magnet is constituted by a first magnet section secured by a securing means to the triangular magnetic pole of the first field core member and a second magnet section secured by a securing means to the triangular magnetic pole of the second field core member.

Abstract: A rotor of an alternator which is composed of a Lundell type core has a wire wound spirally around the rotor. The wire binds the claw poles at equal intervals from the tip to the base of each claw pole, thereby restricting the radial expansion of the claw poles due to centrifugal forces. The wire is made of a non-magnetic material, and is received in grooves formed on the outer circumferential surface collectively formed by the claw poles.

Abstract: A rotary sleeve 1 is integral with a rotary polygon mirror 14 forming a rotor section, one end portion of the rotary sleeve is formed into a magnet mounting section 15, on which a magnet yoke 3 and rotary magnets 4 are mounted. The rotary sleeve 1 has a bearing on its inner cylindrical surface 17 which is in the form of a through-hole.

Abstract: A motor rotor or stator core is formed of a plurality of stacked generally circular laminations. The stack defines at least one inner lamination having laminations positioned adjacent to both sides of the lamination. Each lamination has a predetermined number of circumferentially equally spaced slots or bar elements extending radially at about an edge thereof. The inner laminations include at least one interlocking projection formed in one of the surfaces at a predetermined radial distance from the center of the lamination. The laminations further define at least one projection receiving region formed therein to engage the projection when the laminations arc in the stacked formation. The projection receiving region is spaced from the interlocking projection by an angle .phi. that is a whole number multiple of .beta., where .beta. is an angle defined as a ratio of 360 degrees to the number of slots. A method for making the stacked core is also disclosed.