Abstract: An ultra-high speed, axial gap alternator that can provide an output to a plurality of loads, the alternator providing magnetic isolation such that operating conditions in one load will not affect operating conditions of another load. This improved alternator uses a rotor member disposed between a pair of stator members, with magnets disposed in each of the rotor member surfaces facing the stator members. The magnets in one surface of the rotor member, which alternate in polarity, are isolated from the magnets in the other surface of the rotor member by a disk of magnetic material disposed between the two sets of magents. In the preferred embodiment, this disk of magnetic material is laminated between two layers of non-magnetic material that support the magnets, and the magnetic material has a peripheral rim that extends to both surfaces of the rotor member to enhance the structural integrity.

Abstract: A rotor for an electric motor comprises a shaft having a laminated armature stack mounted thereon. A collar is fitted on the shaft at each end of the stack, and an epoxy resin coating coats the stack and bonds the collar to the shaft to fix the stack in position on the shaft. The collar may be formed by a cylinder which is split along its length and has an internal diameter equal to, or slightly less than the shaft diameter, so as to form a space between the shaft and collar and facilitate entry of the epoxy resin.

Abstract: An inductive energy converter includes a coil assembly having coil windings, with at least some of the coil windings respectively having spaced contact regions. A contact bar within the coil assembly is insulated from the coil windings, and a conductive body is in electrical contact with the contact bar and is movably supported by the coil assembly, wherein movement of the conductive body brings it into electrical contact with consecutive ones of the spaced contact regions, to complete an electrical circuit between one of the windings and the contact bar.

Abstract: A vibratory linear motor system employs a comb-shaped electromagnet to excite transverse mechanical oscillations of a relatively thin, spring-like beam. The electromagnet establishes an approximate standing wave on the beam for which brakes mounted on either side of the beam provide independently established boundary conditions and produce rectified linear motion thereof. The brakes may be electromagnetically, magnetostrictively, or piezoelectrically actuated. An electronic control provides modulated currents to the exciter electromagnet and the brakes in order to control the rectified linear motion of the beam.

Abstract: The problem of stator cooling in a dynamoelectric machine is resolved using manufacturing spaces (32) within stator slots (20) for flow of oil coolant. In order to secure stator winding conductors (30) within the slots, a spring wedge (36) provides a biasing force for biasing the conductors against movements within the slots.

Abstract: A motor-compressor unit comprising a vibration motor (1) having a single-part magnetizable stator (2) in the form of a W, arcuate air gaps (9, 10) being formed between the peripheral surface (6) of the central limb 3 of the W and each of the outer limbs (4, 5) of the W, and an armature (11) which is reciprocatingly pivotable about a motor shaft (12). The armature comprises at least one permanent magnet pole element (13), at least one coil (16, 17) arranged on the stator, an alternating current through the coil producing an oscillating movement of the armature (11), a compressor (21) having a linearly reciprocating piston (24) which is coupled to the armature (11), the coupling (25) being arranged diametrically opposite the pole element (13) relative to the motor shaft (12).

Abstract: Modular protector apparatus for oil-filled submergible electric motors that drive submergible pumps comprises pluralities of components that are interconnected in different system permutations to form protectors appropriate for different applications. The components include heads, chambers, bases, and interconnecting bodies. The bodies have fluid passages that are adapted to communicate with other components and that are opened and closed selectively to provide desired inter-component flow paths. By virtue of the invention, a wide variety of protector apparatus may be manufactured economically.

Abstract: An electric motor for use with a pump has a stator assembly and a rotor assembly. The rotor assembly includes a rotatable shaft and a rotor affixed to and rotatable with the shaft. The stator and rotor assemblies are intended for installation in an appliance. A cover forms an endshield for the motor, as well as a portion of the housing of a pump for the appliance. The cover is constructed so as to align the shaft extending into the pump with operable portions of the pump.

Abstract: A dynamo in the form of a 3 phase welding generator. One stator winding has an in-phase excitation winding feeding the rotor through slip rings. This configuration allows for inherent short-circuit protection as the stator core under short-circuit saturates and prevents rotor excitation, a shaft-mounted fan cools inner and outer surfaces of a tubular heat sink that surrounds the generator and holds a diode-resistor bank.

Abstract: A triboelectric device in which electrical charges are obtained by a rolling process between two rigid dielectric surfaces of appropriate materials, one of which may be planar. There exists therein no injection of electrical charges originating from outside. The separation of the charges with the concomitant generation of electrical potentials is effected by the movement of the parts by triboelectrification. Such devices are useful in the construction of electrostatic generators for teaching, research or industry and as an essential supply for fixed or portable ignition devices for boilers, cookers and gas burners.

Abstract: A brush holding structure for guiding a brush to a commutator is supported in a motor case. The structure includes an insulator plate attached to the motor case. The insulator plate is provided with guide means for guiding the brush in a direction which is inclined to a radial direction of the commutator within a plane including the axis of the commutator. The structure further includes a plate-like spring which has, at both ends, coil portions for winding up. An intermediate part of the plate-like spring presses the brush against the commutator to hold the brush in contact with the commutator without any play.

Abstract: An axially short solenoid type electric generator comprising a stator attached on the inner circumferential surface of the left half of a short cylindrical case, and a rotor accommodated within the right half of the case. The stator comprises U-shaped magnetic metal blocks attached along the inner circumferential surface of the left half of the case, angularly separated at predetermined intervals, an output conductor (coil) wound in a short solenoid through the slots of the blocks, and magnetic short circuit blocks disposed between the channel-shaped blocks. The rotor comprises a centrifugal fan, a cylindrical supporter, U-shaped magnetic material blocks attached around the cylindrical supporter, and a field coil wound through the slots of opposing U-shaped blocks. The electric generator reduces the resistance loss of the coils, and the eddy current loss and hysteresis loss of the magnetic metals.

Abstract: An integrated drive generator (40) for generating constant frequency alternating current which is driven by a drive shaft (12) at variable rotational speeds includes a constant speed drive having an input coupled to the drive shaft and at least one output which rotates at a fixed rotational velocity in response to the drive shaft rotating at a variable velocity and which drives a first drive shaft at a fixed rotational velocity and a second drive shaft at a fixed rotational velocity, an alternating current generator (23), having a rotor (37) mounted on a first shaft (42), with an outside periphery having a second radius farthest from an axis of rotation of the first shaft; an exciter (20) having a rotor (32) mounted on the first shaft, electrically coupled to a field winding of the generator, for supplying electrical power to the field winding of the alternating current generator; a permanent magnet generator (18), having a rotor (24) mounted on the second shaft, electrically coupled to the exciter, for suppl

Abstract: A resonant rotationally oscillating mechanical system has masses supported by a resilient structure held at both ends on a stationary base to define a natural resonance frequency of intended rotational motion about an axis relative to the base. The resilient structure is asymmetrical along the axis. The masses are subject to additional motion relative to the base in directions different from the direction of intended motion. For a selected mode of motion, the masses and the asymmetrical resilient structure are mutually configured, in accordance with equations of motion, to substantially preclude angular motion of one of the masses relative to the base about an axis other than the axis of the intended rotational motion. In another aspect, the resilient structure has one end attached to the base by a coupler that permits that end to move relative to the base, but only at frequencies different from the natural resonance frequency of motion.

Abstract: A force motor having four magnetic lanes arranged annularly around an axially movable central shaft, where the shaft is connected to an armature which also moves axially with the shaft within a gap located between two coils forming each lane of the motor. The four magnetic lanes are electrically and magnetically independent and provide three levels of safety-redundancy in case of coil failure.

Abstract: In a brushless motor formed from a plate type stator in which a driving coil is buried, and a rotor which opposes this stator, a cutout is formed in a portion where no driving coil of a stator exists and a pulley section is provided in the periphery of the shaft-through section of the rotor. The pulley section is inserted into the rotor shaft hole formed in the center of the stator, and a pulley belt wound on the pulley section is guided outside the motor via the cutout of the above-mentioned stator. That is, the brushless motor is of an ultra-thin type in which a pulley is housed within the thickness of a motor.

Abstract: The problem of assembling and maintaining good electrical contact in a rotating rectifier assembly (40) is solved using brazed connections. The rectifier assembly (40) includes three planar, tear-shaped copper phase plates (62) which are equally angularly spaced about an axis (68) in a cylindrical housing (44). Six diode wafers (70) are arranged in two parallel planes which are perpendicular to the axis (68). Three diodes (70) in each plane are brazed (72) to one of the oppositely directed planar faces (63, 64) of the copper phase plates (62). The three diodes (70) in each plane are connected by an additional copper plate (78, 80) which forms an output.

Abstract: In in-mold labeling for applying a label or workpiece into a mold by using a robot hand apparatus, the robot hand apparatus has therein a static-electricity-generating apparatus for generating static electricity on a holding surface. The static electricity generating apparatus comprises a holding member attached to a surface of a base continuous with a hand of a robot and having a holding surface with approximately the same shape as that of the label on the side opposite to the attached surface, tungsten wires stretched using securing members in grooves opened on the side holding surface in the holding member, high-voltage cables with static electricity shields that are connected to the tungsten wires and are led to a high-voltage power source, and suction holes opened perpendicularly to the holding surface of the holding member and connected to a vacuum generating source.

Abstract: An internal pressure explosion-proof construction for an electrically-driven robot with which purging of airtight chambers of the robot in which electric motors are installed can be performed efficiently in a short time when air or inert gas is charged into the airtight chambers. The airtight chambers in which the electric motors are divided into a plurality of blocks, and an automatic opening and closing valve is provided at an outlet port connected to each of the blocks such that it may be opened only when the corresponding block is to be purged.

Abstract: The armature has windings supported by a core mounted on a shaft. The windings and the wires connecting the windings to a commutator are encapsulated in an insert-molded body of plastic, typically nylon. A ring having radially inwardly extending arms (33) equal in number to the number of commutator slots is mounted on the commutator. The arms are lcoated in respective slots between the commutator segments and are stiff enough to block flow of plastic material along the slots during insert molding of the body of plastic.