Abstract: An electric motor, e.g. for use in a hydraulic elevator, has a stator surrounding a rotor and a stator frame around the stator, to which frame end flanges of the motor are secured. The stator frame is formed by a metal sheet bent into the form of a trough, in which the stator is mounted.

Abstract: A structure flywheel energy-storage device is disclosed comprising a rotatable flywheel mounted on a vertical shaft and provided with a bearing. The flywheel is in the form of a magnetic ring structure with a spacing element disposed between the ring structure and the shaft and with magnetic supporting structure to support the rotary magnetic ring structure. The use of the magnetic supporting structure enables the flywheel, once set in rotation with a given quantity of delivered energy, to rotate much longer than if purely mechanically supported.

Abstract: An induction motor for a motor-centrifugal pump unit has a stator shaped to provide a spherical airgap. The stator winding lies between teeth which extend radially of the spherical stator surface. The teeth are formed of built up strips of magnetic laminations wound in a spiral and placed against the stator yoke.

Abstract: Electric submergible motor of the long, multi-rotor section type employed for driving submergible pumps has bearing assemblies between successive rotor sections that are isolated from axial loads. For this purpose, the upper rotor section of each pair of successive rotor sections may have its lower end supported on a rotor shaft protrusion, such as a ring mounted in an annular groove of the rotor shaft. A chamfer at the end of the rotor bore locks the ring in place.

Abstract: A disk-shaped spider connects together a rotating shaft and a yoke. In order to decrease circumferential stresses in the spider disk, the spider is divided into an inner spider and an outer spider, a disk constituting the inner spider being constituted by an integral body.And a disk constituting the outer spider being radially divided into a plurality of pieces which are integrally connected together by flanges, or being constituted by an integral body.

Abstract: A hermetic compressor unit driven by a dynamoelectric machine therein adapted to be energized from a source of power has a housing with a chamber therein, and means associated with the housing and communicating with the chamber is adapted for connection with the power source. A stator of the dynamoelectric machine mounted to the housing within the chamber includes winding means having a set of lead ends integral therewith. Plug means is removably associated with the connection means for receiving the lead ends and for connecting them in circuit relation with the connection means. A set of means are associated with the lead ends of the winding means for insulating them electrically from each other with the insulating means and lead ends twisted together into a twisted bundle thereof.

Abstract: A variable output generator for supplying electrical power to a specific load is cooled by a plurality of motor driven fans 112, 113, 114, 115 disposed in a generator pit 2. An appropriate number of motor driven fans for providing cooling air for the generator are energized in response to the instantaneous generator output, to thereby avoid wasteful power consumption.

Abstract: The present invention relates to a flywheel device comprised of a plurality of flywheel discs axially stacked one upon the other and interconnected by a plurality of tightening bolts. The flywheel discs act as a flywheel in their entirety and are connected to an intermediate shaft. The tightening bolts are passed through the periphery of the stacked up discs. According to the invention, an adjustment disc is introduced between the intermediate shaft and the stacked up discs and is subjected to a facing operation so that a connecting surface of the adjustment disc with the intermediate shaft compensates for any deviation caused by an accumulated dimensional error of the stacked up discs.

Abstract: An electric motor comprising a lower housing, and an upper housing. The lower housing comprises a hollow stationary shaft, and a stator mounted on the shaft. The upper housing comprises, a tube rotatably mounted on the shaft and a rotor fixed on the tube and surrounding the stator for rotation about the shaft. A thrust bearing is interposed between the end of the tube and the lower housing. Longitudinally upper and lower spaced bearings are interposed between the tube and the hollow shaft. An oil holding element is interposed between the bearings. An oil sump means is provided in the lower housing associated with the lower bearing such that oil flowing out of the holding element collects in the oil sump.

Abstract: A tape driving capstan comprises a hollow post (39) a capstan member (36) and a rotor (57,58) which extends radially of the capstan member within a housing (49). The rotor carries permanent magnets (59) and a stator winding (66) is disposed within the confines of the rotor.

Abstract: In these machines, the rim (16) of the rotor (13), supported overhangingly by oblique arms (15), is equipped with a double set of polar pieces (17 and 18), one fastened to the outer part of the rim (16) and called the peripheral polar pieces (17) and the other attached to the inner part of the rim (16) and called the internal polar pieces (18).The peripheral polar pieces (17) define with a first stator (20) fastened to the external ferrule (10) of the machine, a first gap (19).The internal polar pieces (18) define with a second stator (22) attached to an inner ferrule, a second gap (21).The inner and peripheral polar pieces (17 and 18) are arranged back-to-back, in pairs of inverse polarity, to obtain a radial flux in the rim (16) and the polar pieces (17 and 18).

Abstract: An improved ceiling fan including a housing to be hung down from a ceiling and a motor having a stationary stator and a rotatable rotor which rotates a number of blades to create a stream of air. One or more electrical heating elements are positioned within the housing and around the outside of the rotor. A radial fan arrangement generates a flow of air through the housing, over the heating elements, and out into the stream of air created by the rotation of the blades.

Abstract: A dynamoelectric machine (e.g., an induction motor for an overhead ceiling fan or the like) is disclosed having a stator assembly and a rotor assembly with the stator assembly comprising a bearing support or end shield, a core mounted within the bearing support with the core having a bore therethrough for rotatably receiving the rotor body of the rotor assembly. The end shield has a central shaft stationarily mounted relative thereto and a pair of bearings, preferably ball or roller bearings, is provided for journalling the rotor body on the stationary shaft. More specifically, the rotor assembly includes a hub having a generally cylindrical body on which the rotor body is secured by means of an interference or shrink fit with the hub body having a longitudinal central opening therethrough receiving the stationary shaft and further having a mounting flange on its outer end.

Abstract: An electric rotary machinery including a rotor of salient-pole type provided with salient magnetic poles to achieve a fan effect of driving air radially, the fan effect being limited by air flow limiting members attached to the rotor, a stator cooperating with the rotor, an air circulating passage through which air is circulated to cool both the rotor and stator, and electric fans. Cooling air is driven mainly by the electric fans.

Abstract: A stirrer motor, for a flask having a neck through which a drive shaft extends from the motor to an agitating device in the flask, is arranged to be supported by means located in the neck.

Abstract: The invention relates to a collectorless D.C. motor with a horizontal air gap, particularly a low-speed motor for the direct drive of recording and/or reproducing devices. As per invention, the rotor axle is supported within an axial bore of the motor housing, with the motor housing made of plastic. The stator winding and the magnetic return structure are fixedly arranged on the motor housing which is also provided with bores for attaching the motor on installing it into the device. Obviating of machining sequences, simplification of assembly and direct support of the rotor axle in the motor housing all contribute to a reduction in manufacturing cost.

Abstract: A carrying and guiding spider for the support of a rotor of a vertical electrical machine contains two different kinds of arms (6, 16) whereby the one kind of the arm (6) is supported on the foundation (12) in a sliding manner and forms acute angles (+A) in a circumferential direction with a radial line (17) of the clamping point (6') and the other kind of the arm (16) is rigidly connected with the foundation (12) and forms the acute angles (-A) in the opposite circumferential direction with the radial line (17) of the clamping points (16'). The advantage of this solution lies in that the carrying and guiding spider is symmetrically subjected to the load in the axial direction so that there is no torsional moment. At the same time, this construction permits the centering and the free expansion of the central body.

Abstract: This invention provides an electric motor for high speed operation that includes an inner housing assembly made up of two members having tubular walls having telescoped sections bonded together at the central portion of the assembly, with the field of motor bonded to the inside of the two inner housing members. The opposite ends of the inner housing assembly then are bored to provide precisely aligned bearing support surfaces. Ball bearings fit on these surfaces and rotatably mount the armature. An outer housing fits around the inner housing and is spaced from it, providing an unobstructed annular passageway for circulating coolant. The passageway includes inwardly directed portions around the bearings for efficient removal of heat from those areas.

Abstract: A vertical electric motor embodying the invention has a housing including a cylindrical frame enclosing a stator, a rotor and a shaft affixed to the rotor and mounted for rotation about a vertical axis, upper and lower end frames, a heat generating thrust bearing supported on the top end frame and rotatably supporting shaft and rotor, and a lubricant-receiving reservoir within the motor enclosure above the top end frame and enclosing the thrust bearing. Liquid lubricant within the reservoir is in heat absorbing and lubricating relation with the thrust bearing. A plurality of finned heat transfer heat pipes are supported within the reservoir with their evaporator end submerged in the lubricant and their condenser end exposed to air within the motor housing above the top surface of the lubricant and enhance heat transfer from the lubricant to the atmosphere.

Abstract: A step motor for an electronic wristwatch is provided wherein the load on the rotor is reduced. The reduction in the load on the rotor is provided by the configuration of a rotor pinion supporting the rotor and the manner in which same is supported by the rotor support assembly. The rotor pinion includes first and second trunions respectively disposed in first and second bearings. The rotor pinion includes first and second shoulders axially recessed from the ends of the trunions by a predetermined distance so as to define a clearance between the respective shoulders and the respective bearings for each rotary position of the rotor.

Abstract: A supporting structural component such as a bearing for the rotor of a slow speed large diameter electrical machine the rotor of which rotates about a vertical axis comprises concentric inner and outer rings joined by rigid rectilinear spoke-like connecting elements spaced uniformly around THE circumference. The arrangement of these connecting elements is such that they are tangent to the surface of an imagined coaxial cylinder the diameter of which is smaller than that of the inner ring, and the axes of two neighboring connecting elements when imagined as extended in a straight line over both rings intersect only within the inner ring. The connecting elements are inflexible over their whole effective length in the longitudinal direction corresponding to the applied load. Also, the respective axes of all of the spoke-like connecting elements lie at identical acute angles and in the same sense to radii of the inner and outer rings.

Abstract: An electric motor attached at one axial end to a frame for a dishwashing machine or the like and which at its opposite free end is provided with a cooling blower for generating air jets. The improvement comprises cooling channels for the air arranged around the stator, the cooling channels having outlet openings for the cooling air facing the frame and situated at a predetermined distance from the frame with the exception of one or some of the channels at one side of the motor which in combination with the frame are closed in an axial direction and are provided with outlet openings for the cooling air so that the cooling air is directed inwardly against the shaft at the end of the motor turned towards the frame.

Abstract: A rotor of a large size vertical hydro-generator, comprising a shaft and a frame with wedge strips attached thereto and provided in their lower portions with a dismountable support means for supporting a laminated rim with poles. The support means includes oppositely directed wedges disposed in a horizontal transverse slot formed on the outside of the lower portion of each wedge strip and partially projecting beyond this slot in the direction of the rim.

Abstract: A tool electrode for the electrical machining of a workpiece is displaced in various directions by the selective energization of a plurality of electromagnets on a first member. The pole pieces of the electromagnet on this member are juxtaposed with a conical surface of another, magnetically susceptible member. One of these members, e.g. the magnetically susceptible member, is connected to the tool electrode while the first member is connected to a support.

Abstract: A support structure for the stator component of an electrical machine having a larger diameter, the rotor of which rotates about a vertical axis. The stator and foundation on which the stator rests form concentric inner and outer rings respectively joined by means of spoke-like arms spaced uniformly around the circumference, and the arrangement of these arms is such that they are tangent to the surface of an imagined coaxial cylinder the diameter of which is smaller than that of the inner ring, and the axes of two neighboring arms when imagined as extended in a straight line over both rings intersect only within the inner ring.

Abstract: The stator of a rotating electrical machine consists of radially disposed pole teeth, a magnetic circuit closure core surrounded by these pole teeth and a winding, the coils of which are inserted between the pole teeth and envelop the core.

Abstract: A drive system for a printing press having a DC drive motor which is supplied, via an inverter, from an AC supply line. A flywheel assembly is connected to at least one of the rotational elements of the press, the flywheel assembly including a flywheel and short torsionally resilient rod coaxially interconnecting the flywheel and the rotational element and rigidly connected at its ends to each of them, with the rod and the flywheel together being so proportioned as to form a resonant mechanically oscillating system having fundamental resonance at the frequency of the supply line.

Abstract: An end of an end cover provided on a fixed electromagnetic device is arranged in spaced opposition to the side wall of spider arms which are perpendicular to a rotary axis, the spider arms being projected radially from the rotary shaft. The end of the end cover is positioned midway of the spider arms on the radii thereof, thus substantially eliminating the fan loss of the rotary electric machine.

Abstract: A vertical electric motor characterized by having a ventilation system consisting of air inlet passageways adjacent the top and bottom of the machine arranged in combination with air directing baffles, fans and air-flow-controlling bleed apertures to provide an exhaust air flow that effectively limits contact between the turbulent, heated exhaust air streams and the streams of cooling air entering the motor. In particular, the structure and arrangement of the component parts of the motor ventilating system are such that an area of turbulent exhaust air is positioned farther away from generally axially oriented air inlet passageways at the top of the motor than to more radially oriented inlet air passageways at the bottom of the motor.

Abstract: The laminated stator component of a dynamo-electric machine is prestressed in such manner as to free the laminations from temperature-induced compressive stresses that otherwise may result in displacement of the laminations. In particular, the stator lamination assembly is prestressed in tension, with respect to the cold condition, in an outward direction, by an amount corresponding at least approximately to the difference in expansion between the laminations fixed in the stator frame and those freely expanded at the same temperature. The laminations are held continuously in tension, preferably in a radially outwards direction, in the stator frame or foundation, which is thus at least partly pre-compressed inwards, in such manner that under all practicable operating temperatures of the machine, no compressive stresses can occur in the laminations.

Abstract: A construction for an electric motor, which motor is adapted to be installed and operated in a generally vertical mode. The rotor shaft of the motor extends upward through the top wall (or cap) of the stator housing. With this vertical orientation, however, there exists the possibility of unwanted liquids flowing downward alongside the rotor shaft into the housing where they could cause damage to the motor windings, etc. To protect sensitive interior parts of the motor, an annular trough is interiorly provided for capturing such liquids as may enter the housing by flowing downward along the rotor shaft. A shield or skirt is sealingly attached to the rotor shaft within the housing at a position where the shield extends radially outward over the trough. Drainage passages connect the trough to the exterior of the housing, such that unwanted liquids will be initially captured and then drained from the housing before they can reach an interior location where they could cause damage.

Abstract: A cryogen-cooled synchronous compensator, comprising a fixed armature winding and a rotor with a field winding arranged thereon, said windings being made of superconducting materials and located, together with the rotor, within a fixed cryostat, characterized in that the rotor carrying the field winding is enclosed within the cryostat in the airtight housing, adapted to prevent cryogen fluid from contacting the rotary members of the machine.

Abstract: The support arrangement for a vertical electric machine includes a support spider thereof having arms fastened in a concrete wall surrounding the machine. The arms are secured only in the tangential direction. For this purpose, the arms extend into cavities of metal elements set into the concrete wall and are secured therein in the tangential direction by pretensioned rolling members. Because of the rolling motion of the rolling members, radial thermal expansion causes only relatively small radial forces to act and be transmitted to the concrete wall.