Abstract: A compact drive which has a high transmission ratio for driving generators by wind force and permits simple assembly and maintenance. The gearing is a slip-on gearing having a multi-stage epicyclic gearing arrangement and a spur-gear stage for the drive output to a generator. The force is introduced into the epicyclic gearing arrangement via a ring gear, which drives planet gears, on whose shafts fixed to the housing in each case further planet gears are arranged. The planet gears mesh with a sun gear, from which the drive output to the spur-gear stage is effected.

Abstract: Rotational force of a driving motor is transferred to a photosensitive drum via a planetary-roller reduction device, so that the photosensitive drum is rotated. A speed detector set on the shaft of the photosensitive drum detects the rotational speed of the photosensitive drum. In accordance with the detected rotational speed of the photosensitive drum, the rotational speed of the driving motor is adjusted so that the photosensitive drum is rotated at a constant speed.

Abstract: A bearing structure for a flat motor, having a rotor provided with a permanent magnet which is rotatively supported by the bearing structure mounted on a casing and by a stator structure mounted on the casing, in which the rotating magnetic field generated by the stator structure in opposition to the permanent magnet causes the rotor to rotate, and wherein either the outer race or the inner race of a compound bearing structure having a single row ball bearing and a cylindrical bearing, is fixed to the bearing structure mounted on the casing, while the other face is fixed to the rotor.

Abstract: An actuation device is provided. An actuator is connected between two components of a frame and a linkage mechanism such that movement of an actuating component causes movement of the linkage mechanism so as to move a user interface device. A braking device is connected between two components of the frame and the linkage mechanism such that an increase of the resistance brakes the movement of the linkage mechanism imparted by the actuation device.

Abstract: There is provided a means for preventing wear caused by the contacting/sliding of a thrust hydrodynamic gas bearing surface when a spindle motor is started. A cylinder 4 of a radial hydrodynamic gas bearing that has radial hydrodynamic grooves in an outer circumferential surface thereof and a disk 3 of a thrust hydrodynamic gas bearing that has thrust hydrodynamic grooves in an upper face thereof are disposed on an upper end of an axial center of a stator core 2 having a stator 2a around which a motor coil 7 is wound, a hollow cylinder 6 whose inner surface facing the cylinder 4 of the radial hydrodynamic gas bearing is smooth and a rotor magnet 8 facing the motor coil 7 are disposed on a hub 5 acting as a rotational member, a load in a radial direction is supported by the radial hydrodynamic gas bearing, and a load in a thrust direction is supported by using the thrust hydrodynamic gas bearing together with a magnetic bearing consisting of the stator 2a and the rotor magnet 8.

Abstract: A motor comprises a rotor having an index signal generating portion on a rotor magnet and a magnetic resistance sensor having a magneto-sensitive surface. The sensor is positioned on a stator of the motor facing the index signal generating portion of the rotor with a predetermined gap. The sensor functions to sense an index signal in the magnetic field generated by the index signal generating portion during the rotation of the rotor. A speed detection circuit is included for detecting the speed of the motor based on the detection results of the magnetic resistance sensor. The index generating portion forms a magnetic area in which a magnetic flux intensity in a plane orthogonal to the principal magnetic flux of the index signal generating portion is greater than the rated sensitivity of the magnetic resistance sensor. The magnetic resistance sensor is positioned on the magnetized area such that its magneto-sensitive surface is parallel to the plane.

Abstract: A magnetic coupling mechanism which can transmit rotational force of a motor with high efficiency and is simple in mechanism and unlikely to damage bearings, etc. and also unlikely to contaminate a laser gas, and in which flakes from plating or the like will not cause an operational abnormality. The magnetic coupling mechanism transmits rotational force from a motor shaft outside a laser chamber filled with a laser gas to a shaft of a gas-circulating fan in the laser chamber to rotate the fan. A first magnet group is provided on an inner peripheral surface at one end of the motor shaft. A second magnet group is radially coupled to the first magnet group through a ceramic partition constituting a part of the wall of a container of the laser chamber. The second magnet group is provided on the outer peripheral surface of the fan shaft.

Abstract: An insulating material (10) for an electrical generator rotor and method of forming the same. An insulating substrate (12) is formed from a single layer of woven glass fabric (16) having a necessary thickness and coated with a thermosetting resin (18). A first side of the substrate (12) is adhered to a first layer of copper winding material (20) of an electrical generator. A second side of the substrate (12) is covered with a layer of contacting material (14), such as plastic film, paper, treated felt or coated glass fabric, to cover the rough as-formed surface of the substrate (12) resulting from the coating of the necessarily thick layer of fabric (16). The contacting material (14) provides a desired coefficient of friction to form a slip surface permitting relative movement between the first layer of copper winding material (20) and a second layer of copper winding material (24) disposed over the insulating material (10).

Abstract: A motor with a cooling mean is provided which includes a rotation axis, a rotator assembly fixed to the rotation axis, a stator assembly that surrounds the rotator assembly, a bearing attached to both ends of the rotation axis to support the rotation axis, an axial-flow fan or a hybrid fan used as a cooling means places between each bearing and the rotator assembly to cool the stator assembly and the rotator assembly, and an endshield attached to both ends of a housing to protect the structure. The motor with a cooling means further includes a plurality of air intakes; a plurality of through holes attached to the rotator assembly to circulate the air, and a plurality of concave grooves or cooling pins formed in a surface of the endshield to enlarge the cooling area to discharge the heat in the inside of the motor. Thereby, the cooling efficiency is substantially improved, the operation of the motor becomes more stable, and the life span of the motor is increased.

Abstract: The motor structure, which has a laminated structure of plural plates 1 and also has a stator pole assembly 10 formed with a component mounting portion, comprises a synthetic resin layer 6 which encloses and covers the plural plates 1 while holding the plates in a closely contacted state, overhang portions (8, 9) integral with the synthetic resin layer 6 and which serve to not only hold but also position motor components, and an insulating film 7′ which covers portions not coated with the synthetic resin. While the synthetic resin layer is formed on the surface of the lamination stack, pressure is applied to the laminated plates as constituents of the stator pole assembly from both upper and lower surfaces of the laminate. This application of pressure is performed using plate pressing projections formed in the mold.

Abstract: A winding bar (10) for a high-voltage winding, for example a stator winding of an electric machine, includes a plurality of conductors (13) which are arranged above and/or next to one another in a conductor bundle. The conductor bundle has a rectangular cross section. The conductor bundle is surrounded by an insulation (14). An overall improved electric strength is achieved at the edges without changing the insulation thickness because a thickness (d2) of the insulation (14) on the edges (15) of the winding bar (10) is greater than the thickness (31) of the insulation (14) on the flat sides of the winding bar (10). Preferably, a calibration process is used to shape the edge region.

Abstract: A motor has a support member, a bearing member mounted in a hollow space of the support member for undergoing rotation, a rotor member having a shaft portion disposed in a hollow space of the bearing member for rotation therewith, at least one magnet connected to one of the support member and the rotor member, and electromagnets connected to the other of the support member and the rotor member and in confronting relation to the magnet for generating a rotational magnetic field that coacts with the magnet to rotate the rotor member. At least one of an inner peripheral surface of the bearing member and an outer peripheral surface of the shaft portion of the rotor member has contact portions disposed in contact with the other of the inner peripheral surface and the outer peripheral surface to form lubricating gaps each disposed between an adjacent pair of contact portions and between the inner and outer peripheral surfaces.

Abstract: A motor is incorporated in a cylindrical body which is a rotary brush. Rotation of a rotor of the motor, directly or via a speed reduction mechanism, drives the rotary brush. Cooling air runs through the cylindrical body so that the motor is cooled and protected. The rotary brush and an electric apparatus using the rotary brush can be downsized and easily.

Abstract: An electric motor cooling fan having a seal ring reduces cooling air recirculation inside the motor which increases the cooling of motor windings for the prevention of motor failures and increases motor reliability. The cooling fan includes two opposed, spaced apart, and substantially circular fan shrouds. A plurality of fan blades extend between and are attached to the fan shrouds. The fan blades are spaced circumferentially around the fan shrouds. The seal ring is coupled to one shroud and extends from an outer surface of the shroud ring. The seal ring has a substantially cylindrical shape and is sized to provide a minimal clearance between an internal air deflector and the seal ring to minimize the flow of air through a space between the shroud ring and the air deflector.

Abstract: An electric motor including a permanent-magnet rotor having embedded magnets held in place by several segments. The embedded magnets are secured by segments including non-circular openings near their centers. Several non-magnetic, non-conductive bars extend through the non-circular openings of the segments to secure the segments in relation to the shaft. The motor is capable of producing high torque while only requiring a minimum amount of space.

Abstract: A metallic ring 45 molded by punching a copper plate having hooks 43, etc., and a carbon member 46 are brazed to each other by a brazing material having a higher melting point than the temperature for connecting a coil to conductive members 52, that is, a brazing material containing, for example, nickel and chromium. Next, resin is filled up inside the metallic ring 45 and carbon member 46 to form a resin substrate 48. Next, slits 50 are formed at the metallic ring 45 and the carbon member 46 in the radial direction, so that generally fan-shaped segments 51 insulated from each other and conductive members 52 are formed. Next, a coil is connected to hooks 43 of the conductive members 52 by soldering, welding, etc.

Abstract: A stator for a high voltage generator has cable windings that are radially inserted into the stator slots. The stator is assembled as the cable windings are laid into the stator slots. The stator slots are left wide open to allow the cable windings and separator bars to be inserted in the slot as the stator is assembled. The open slots have sidewalls that are defined by stator teeth, which extend radially out from a rotor jig in the stator. As each coil section is laid in a slot, a separator bar is inserted over the coil so that another coil section can be laid into the stator. The coils are stacked in a slot and sandwiched between separator bars also in the slot. The separator bar is keyed to the sidewalls of the teeth to provide structural support for the cable windings.

Abstract: In a three phase armature winding for a dynamo-electric machine, each phase of the winding comprises a first phase belt for (3n+2) slots and a second phase belt for (3n+1) slots. Three parallel connected circuits each constituting series connected coils per circuit. Each series coil per circuit has an upper coil piece and a lower coil piece connected thereto in series. Each of the upper and lower coil pieces has one connection side end portion and other non-connection side end portion. The first phase belt houses (3n+2) series coils of the circuits and the second phase belt houses (3n+1) series coils thereof. When the circuits in each phase are designated circuit numbers, the circuits in each phase are arranged so that a circuit sequence of the upper coil pieces in each phase belt and a circuit sequence of the lower coil pieces therein are substantially the same.

Abstract: A motor-driven fan includes an electric motor including a rotor and a stator in which the rotor includes an essentially cup-shaped cap which extends at least partly around the stator and has a plurality of lateral exit openings adjacent the bottom wall, and an impeller or fan including a hollow hub from which extends a plurality of main outer fan blades. This hub has a front wall fixed to the back wall of the cap of the rotor and a lateral skirt which surrounds the lateral wall of the cap in a radially spaced relationship. The hub is further provided with inner ventilation blades acting in operation to generate a cooling air stream which passes through the motor.

Abstract: An electrostatic microactuator comprising a substrate and at least one comb drive assembly having a first comb member mounted on the substrate and a second comb member overlying the substrate. The first comb member has a plurality of first comb fingers. The second comb member has a plurality of second comb fingers. The second comb member is movable between a first position in which each second comb finger is not substantially fully interdigitated with an adjacent pair of first comb fingers and a second position in which each such second comb finger is substantially fully interdigitated with such adjacent pair of first comb fingers. Each of the second comb fingers is offset relative to the midpoint between the adjacent pair of first comb fingers when in the first position and is substantially centered on such midpoint when in the second position.