Abstract: A compressor is driven by a brushless electric motor which includes a stator and rotor mounted in a closed housing. An optical fiber device detects the rotational position of the rotor by transmitting light into the housing from an outside light source and directing that light toward a surface of the rotor which has light reflecting and non-reflecting sections. The optical fiber device transmits reflected light out of the housing and to a photoelectric converting element. The optical fiber device comprises an internal optical fiber segment disposed within the housing, and an external optical fiber segment disposed outside of the housing. Light is transmitted between the internal and external segments by positioning respective ends of those segments in mutually facing relationship on opposite sides of a transparent window member disposed in the housing.

Abstract: The rectifier arrangement, preferably for a three-phase generator for a motor vehicle, has at least one power diode of positive polarity and at least one power diode of negative polarity assigned to respective half waves of each phase of the three-phase current and a cooling arrangement for the power diodes, the power diodes of like polarity being arranged on respective heat sinks in an electrically and thermally conductive fashion, and the heat sinks being sandwiched together with at least one electrically insulating part (32) which contains the electrical conductors between the diodes and the three-phase winding.

Abstract: A dynamo-electric machine includes a stator having a ferromagnetic yoke with an internal recess and a rotor disposed in the internal recess defining a gap between the yoke and the rotor. An instrument holder to be introduced into the gap for inspecting the dynamo-electric machine includes a frame section and instruments secured to the frame section for inspecting the dynamo-electric machine. At least one wheel set has at least three wheels for moving the instrument holder in the gap. Each of the wheels is rotatable about a respective one of approximately mutually parallel axes. A connection device is to be connected to leads for connecting the instrument holder to a control and evaluation device. At least one magnet presses the wheels of the instrument holder against the yoke in the gap.

Abstract: In display comprising a display surface member with a plurality of display surfaces, and a permanent magnet type motor mechanism composed of a stator having magnetic members each forming a magnetic pole at one free end and excitation windings wound on the magnetic members and a rotor having a magnet member with a double-pole permanent magnet, the number of display surfaces of the display surface member is three or more odd number; the numbers of magnetic members and excitation windings of the rotor are also odd in accordance with the number of display surfaces and the magnet member of the rotor has a first magnetic pole opposed to the magnetic pole of one of the odd number of magnetic members and a second magnetic pole opposed to the magnetic poles of the other two adjacent magnetic members.

Abstract: A disc driving motor for rotating a recording medium in the form of a disc of the type having a disc-shaped rotor yoke around the outer peripheral portion of which is securely joined a driving magnet for generating a rotating force, an auxiliary yoke attached around the outer periphery of the rotor yoke so as to avoid magnetic saturation of the rotor yoke and leakage of the magnetic fluxes from the driving magnet through the outer peripheral portion of the rotor yoke to the exterior. The tops of screws for securely maintaining the core yoke at a predetermined position are not extended beyond the surface of the core yoke in opposing relationship with the rotor yoke.

Abstract: The motor provided includes a unique laminated stator core and a means for changing the continuity of the magnetic circuit. The stator core structure is split into two part-cylindrical elements which define spaces between their opposing ends. Flux gates fill the spaces and provide magnetic circuit continuity. The flux gates are connected to solenoids which can displace the flux gates in and out of the spaces, thereby changing the continuity of the magnetic circuit of the motor. The motor rotor aligns its magnetic axis with the spaces, and will resist substantial imposed torque loads.

Abstract: An electric rotating machine, which can be operated as either a motor or generator, utilizes material exhibiting a Hall effect to replace the normal slip rings or mechanical commutation devices. Preferably, a slab of Hall effect material is curved to extend circumferentially around the rotor between the rotor and stator, and the rotor is adapted to create a magnetic field. When used as a motor, a source of electrical power is connected to the Hall effect material to cause a primary current to flow therein. The combination of the rotor magnetic field and the primary current flowing in the Hall effect material produces a Hall effect current which creates a torque on the rotor causing it to rotate. When used as a generator, the rotor is rotated and induces a primary current to flow in the Hall effect material. The combination of the rotor magnetic field and the induced primary current produces a Hall effect voltage and current that can be connected to power an electrical load.

Abstract: The invention provides an improved vibrating device or electromassager including a vibrating plate rocking corresponding to rotation of a crank shaft interlocking with a motor, and a counter weight for compensating for reaction against rocking of the vibrating plate. In the vibrating device thus constructed, the center of gravity of the vibrating plate and that of the counter weight are disposed on the same plane perpendicular to the crank shaft. Accordingly no foce is applied to shake the vibrating plate in the direction of the crank shaft. The vibrating plate is thus rocked stably and noiselessly without making the body of the vibrating device bounce.

Abstract: An automatic washer is provided with a separate motor to drive the drain pump, the motor having a displaceable stator portion connected to the basket brake mechanism such that when the pump motor is energized the basket brake will be released. Such a construction obviates the need for a separate component such as a solenoid to deactivate the brake mechanism. The stator portion is displaceable perpendicularly to the rotor axis and can move either in a radial sliding manner or can be pivotally mounted so as to move through an arc relative to the rotor.

Abstract: An electric motor and pump mounting bracket assembly comprising an electric motor and a bracket fastened to the motor for supporting a pump which is driven by the shaft of the electric motor. The electric motor comprises a cylindrical shell which encircles the stator of the motor and a pair of end members engage surfaces on the shell which are accurately positioned longitudinally of the shell relative to one another and relative to the axis of the shell. The end members rotatably support a shaft in concentric relation to the shell. The pump mounting bracket includes a planar surface that is accurately located parallel to and a predetermined accurate distance from the centerline of the shell to form the mounting surface for the pump. The bracket further includes an opening through which the connecting link to the shaft of the motor extends. The accurate surfaces on shell are in predetermined longitudinally spaced relation to the centerline of the opening in the bracket.

Abstract: A rotor of a built-in motor includes a shaft having a stepped part and a sleeve having a hollow space arranged to cover the stepped part of the shaft and a hydraulic pressure supply means. The sleeve is fitted with the shaft at the stepped part. A core is fitted with the sleeve. Hydraulic pressure applied to the hollow space within the sleeve via the hydraulic pressure supply means loosens the fit between the sleeve and the shaft, thereby allowing the shaft to be readily removed from the sleeve and core portion.

Abstract: It is conventional to use an electric motor for each device requiring such a drive even although only one such device may be used at one time, because it is inconvenient and time consuming to disconnect the motor and re-connect same to another device. The present invention enables a single electric motor to be used on a plurality of devices and is easily changed from one to another. The device consists of a base plate secured in the correct position on each of the devices. The single motor is mounted on a support plate having a pivot shaft at the rear thereof easily attached and detached for pivotal action, to one side of any of the base plates and having a compression spring reacting between the front of the support plate and the device to urge the support plate and the motor upwardly to supply sufficient tension to a drive belt operatively extending between the motor and the device upon which the motor is detachably secured.

Abstract: Solar energy conversion apparatus including a rotatable converter with a core that is triangular in cross-section and tapers towards its ends. A multiplicity of hemispherical photovoltaic cells are supported on the sides of the core. Two metal foil layers insulated from each other are connected to different conductivity type portions of the cells, the outer foil layer being reflective. A glass shell covers the core and tapers toward each end. The shell has a dodecagonal cross-section with four facets overlying each side of the core, alternate facets being left uncovered and transparent and the other facets being silvered, thus forming reflective interior surfaces for reflection of sunlight entering the shell. A parabolic reflector directs sunlight on an end of the converter. A stationary housing concentric about the converter has a reflective inner surface in first and second end sections parallel to the taperings of the shell. The housing is divided into three sections each containing a field winding.

Abstract: A sealed type internal pressure explosion proof robot motor assembly. The robot has a plurality of arms pivotably connected thereto and is used in an explosive atmosphere. Each arm is formed with an airtight chamber in which an electric motor is encased. These chambers are connected to one another so as to communicate by means of sealed hoses encasing wiring therein. Air or gas of a pressure above atmospheric pressure is supplied to the chamber through the hose. The electric motor is a DC print motor.

Abstract: An electric motor for controlling the tilt of a throttle valve is disclosed. A rotatable field magnet having at least two pairs of N and S poles is mounted on a rotary shaft carrying the throttle valve for rotation relative to a disk-shaped stator yoke having at least one armature coil formed therearound. The coil includes a first toroidal windings of conductor effective for the development of torque wound in one direction and a second toroidal windings of conductor similarly effective for the development of torque wound in the other direction and disposed away from said first toroidal windings of conductor circumferentially of the stator yoke at an angular interval which is equal to about 2n-1 times the pole-to-pole interval of said magnet, said first and second windings being electrically connected to each other. The first and second windings of conductor are phase shifted in spaced-apart relation to each other.

Abstract: A compact motor arrangement having at least three equi-angularly-spaced motors having coplanar rotational axes intersecting at a common point. Each motor has an exterior shape of a frustrum of a cone, and a conical air gap, the exterior surfaces of adjoining motors being tangential.

Abstract: To provide a dynamo electric machine, for combination, preferably, with a centrifugal circulating pump, having a rotor which is at least part-spherical, the stator is formed of edge-wound strip material, in which the stator part is a continuous strip of L-shape deformed strip, with notches (9') cut into the L prior to deformation, the bending edge (15) of the L changing throughout the length of the strip, uniformly, with uniform change of the spacing of the notches so that, as the strip is wound over a part-spherical form which defines an air gap between the rotor and stator, the width of the teeth between adjacent notches (9') will increase to define continuous through-slots (9) for the windings, and the bending corner (15) likewise will change from a position near the root of the notches (9') to a position within the solid portion of the second leg (18) of the L.

Abstract: A generator that utilizes the magnetic flux lines of the earth and includes a base, a frame that is attached to the base, a shaft that has a free end and is rotatably mounted in the frame, components for rotating the shaft, a plurality of brushes that are mounted on the frame, at least one ring that is affixed to the free end of the shaft and which is in rotatable contact with the plurality of brushes, and an armature that is formed by coils of wire which are wound around a rod that is attached to the shaft, the coils of wire have free ends which are connected to at least one ring so that when the armature rotates the coils of wire cut the magnetic flux lines of the earth and cause an electric current to be generated at the plurality of brushes.

Abstract: A print wheel comprising a plurality of character elements for use in a serial impact printer such as a typewriter is directly attached to a rotor of a high performance rotary stepper motor. The rotor which is characterized by a high force-to-mass ratio includes a plurality of circumferentially spaced magnetic drive elements which are integrally formed with the rotor hub which also supports the print wheel. In one embodiment, the stator of the rotary motor forms an axial air gap between an active stator portion and an inactive stator portion, and the rotor and print wheel are removably mounted in the air gap. In another embodiment, the stator of the rotary motor forms a radial air gap between the active stator portion and the inactive stator portion.

Abstract: A stepper motor having a stator and a rotor, the rotor having a shaft formed with an axial bore. A pair of bearings carried by the stator rotatably support the shaft. A stud is fixed within the bore and has an enlarged head extending radially beyond the external contour of the shaft into axial alignment with at least part of one of the bearings. Engagement between the stud head and the bearing limits axial movement of the rotor with respect to the bearing.

Abstract: A static magnetic frequency multiplier has iron structures which form a closed magnetic circuit and which carry a polyphase primary winding having p.sub.1 pole pairs distributed in slots. The winding legs, pitch, interleaving of circuits, setting of the slots, and the like, of the primary winding are so constructed that a voltage is induced at its terminals only by the fundamental of a field which has the pole pair number p.sub.1. In addition, the iron structures carry a secondary winding with the pole pair number p.sub.2 which is an uneven multiple of p.sub.1 and which is distributed in slots, being magnetically coupled to the primary winding. The secondary winding is designed so that no voltage is induced at its terminals by the fundamental of a field having the pole pair number p.sub.1.

Abstract: There is disclosed an electrical drive motor, in particular for the water pumps in the field of aquaria, wherein the housing is universally sealed liquid- and gas-proof and wherein a permanent-magnetic coupling is located on the motor shaft acting through the sealed housing wall. In order to render this drive motor independent so that it may be used for various units, is able to be connected thereto with no problems and in addition thereto is reliable, the side of the motor housing directed toward the water pump is defined as a thin-walled diaphragm with a planar outer surface which is engagable with a likewise planar sealed diaphragm surface of the pump casing, in the area of the diaphragm securing means being provided for connecting the motor housing to the pump casing. Such a motor may be used with no problems in the field of aquaria and may even be used submerged in water.

Abstract: Any suitable strip material, including cold-rolled steel, is stamped to establish first and second laterally extending portions interconnected by a connecting segment, with a locating hole located midway between the free or distal ends of the laterally extending portions. The connecting segment is sized so that no dimension of the connecting segment as measured from the center of the locating hole exceeds a preselected dimension corresponding with the diameter of a shaft with which the adapter is to be used. The central connecting segment may or may not be symmetrically positioned relative to a center reference line extending longitudinally along the laterally extending segments. One or more laterally extending marginal edges of the laterally extending sections may be tapered in order to permit overbending or overforming of the sheet material.

Abstract: A motor-containing device, particularly a submersible pump of the type including a sealed housing and motor mounted within the housing, includes a heat conducting filler material disposed in the gap between the motor and internal surface of the housing walls to improve the transfer of motor-generated heat from the motor to the housing walls. The filler material is such that it can be disposed in the gap in an initial form or state without concern for matching the exact dimensions of the gap and subsequently transformed while in the gap to provide a layer that fills the gap and provides a path for heat conduction to the housing walls. In one form, the filler material comprises a high memory thermoplastic that is mechanically prestretched into relatively thin sheet form, added to the gap during assembly of the pump, and then expanded in the gap by the application of heat thereto. In another form, the filler material comprises a thermoplastic material exhibiting high thermal expansion.

Abstract: A coreless motor comprises a motor housing having a bearing, a rotor mounted within the housing, rotatably supported within the bearing and having a plurality of coils constituting a pancake coil, a permanent magnet stator mounted within the housing and disposed opposite to the rotor, in which the stator is arranged opposite to an effective coil section of the pancake coil and thus the rotor, and an annular spacing is formed opposite to an outer peripheral portion other than the effective coil section of the rotor so that a balance adjusting member for the rotor as well as an electrical part associated with the coreless motor can be provided in the annular spacing within the motor housing.

Abstract: A coreless motor comprises a motor housing having a bearing, a rotor mounted within the housing, rotatably supported within the bearing and having a plurality of coils constituting a pancake coil, a permanent magnet stator mounted within the housing and disposed opposite to the rotor, in which the stator is arranged opposite to an effective coil section of the pancake coil and thus the rotor, and an annular spacing is formed opposite to an outer peripheral portion other than the effective coil section of the rotor so that a balance adjusting member for the rotor as well as an electrical part associated with the coreless motor can be provided in the annular spacing within the motor housing.

Abstract: An intermediate rotatable member is driven at relatively high speed about a common axis and is concentrically positioned between first and second relatively rotatable members, one of which is bidirectionally driven with respect to the other. Hydrodynamic fluid bearings are carried by the intermediate member on both surfaces thereof and acting on the first and second members, thus even upon cessation of motion, between said first and second members, there is no loss of the hydrodynamic fluid bearings between the first, second and third members.