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| Number | Title | Issue Date |
| 5294856 | Shifted pole single phase variable reluctance motor A hybrid single-phase variable reluctance motor (31) has a stator (33) having a plurality of inwardly salient teeth (41A-41D) terminating at a central bore (37). The teeth are arranged in generally diametrically opposed pairs of teeth and are generally ev... | 03/15/1994 |
| 5276958 | Method of manufacturing an electromotor with laminated stator A method of manufacturing an electric motor wherein pole pieces, made of pole laminations provided with outwardly extending projections are assembled into pole piece blocks, which are provided with stator coils premounted thereon. The pole piece blocks ar... | 01/11/1994 |
| 5256926 | Alternating-current generator with stator center lamination and method for producing the center lamination The alternating-current generator includes a housing having two end shields, a stator bundle and a rotor mounted in the housing so as to be rotatable in the stator bundle. The stator bundle includes two bundle halves and at least one center lamination bet... | 10/26/1993 |
| 5243248 | Electric motor having a low loss magnetic flux return path The invention is directed to an electric motor construction having a magnetic flux return path which exhibits very low losses due to eddy currents or hysteresis, and simplifies construction thereof. In the motor construction, the magnetic flux return path... | 09/07/1993 |
| 5239221 | Combined stator for a carbon brush motor A combined stator for a carbon brush motor is provided. The combined stator includes two half stator yokes combined together and secured tightly with a securing frame formed by two U-shaped frame members. The two half stators are each provided with two se... | 08/24/1993 |
| 5235231 | Dynamoelectric machines having energy-efficient stator constructions and method In a radial gap dynamoelectric machine a composite stator ferromagnet having reduced losses is formed using fanfolded thin section metallic glass or electrical steel strips edge wound to form a ring-like magnetic structure surrounding separate stator toot... | 08/10/1993 |
| 5223761 | Electromotor with laminated stator and method of manufacturing the same An electric motor and a method of manufacturing the same, wherein pole pieces, made of pole laminations provided with outwardly extending projections and assembled into pole piece blocks, which are provided with stator coils premounted thereon, are secure... | 06/29/1993 |
| 5208503 | Energy-efficient ferromagnetic stator and core apparatus Energy efficiency of electric motors and transformer, inductor and ballast apparatus is increased through use of amorphous ferromagnetic materials and thin section electrical steels by methods using folding of lamination stock, forming of lamination stock... | 05/04/1993 |
| 5196751 | Large-diameter a.c. motor with joints in the stator In a large-diameter a.c. motor, the stator is divided by joints (6). The stator coil (5) consists of windings (4) which are arranged in two layers in the grooves of the stator. In order to simplify assembly of the machine, the stator coil (5) is divided i... | 03/23/1993 |
| 5185547 | Dynamo-electric machine stator core construction Apparatus for aligning the endplates with the core of an electrical generator. To accommodate for relative thermal expansion and contraction between the endplates, having differing coefficients of thermal expansion due to being made of a different materia... | 02/09/1993 |
| 5176946 | Laminated contactor core with blind hole A method of manufacturing a core for an electrical inductive device. A blind hole is provided through a stack of laminations into which an oil or an epoxy resin adhesive is placed. The blind hole provides a slow release for the oil to the outer surfaces. ... | 01/05/1993 |
| 5173629 | Electric motor stator assembly with square edged stator plates A laminated stator assembly for an electric motor includes plate laminations which have square-trimmed edge segments separated by circular peripheral edge sectors, which plates are randomly oriented in assembling the stator to provide a generally cylindri... | 12/22/1992 |
| 5164626 | Coil element and heat generating motor assembled therefrom A heat generating motor capable of efficiently producing a high flow rate current of a fluid heated to a high temperature, and produced minimal magnetic vibration, including component coil blocks, coil elements and hardened coils which provide efficient a... | 11/17/1992 |
| 5142179 | Stator structure of built-in motor The stator of a built-in motor must be firmly and accurately mounted on the spindle head housing or the like of a machine tool. A stator core (10), i.e., a principal component of the stator is welded partially at the circumference (14) thereof, and then t... | 08/25/1992 |
| 5142178 | Apparatus for aligning stacked laminations of a dynamoelectric machine An apparatus and method for forming laminations for a stacked lamination assembly of a dynamoelectric machine wherein the laminations of the assembly are provided with displacement segments and complimentary openings of slightly larger dimensional size, t... | 08/25/1992 |
| 5075150 | Pack of laminations with projections and depressions in torsionally flexible contact In one embodiment, the pack is torsionally flexible. Pack of laminations comprises laminations which are connected one to another by only a single connection. The single connection is provided by a projection which projects into a depression. The projecti... | 12/24/1991 |
| 5057726 | Structureborne vibration-compensated motor arrangement having back-to-back twin AC motors A structureborne vibration-compensated motor arrangement includes a pair of twin AC motors supported by a rotatable shaft structure and a stationary outer housing. Each motor includes an annular stator core structure and an annular rotor field structure. ... | 10/15/1991 |
| 5053663 | Device for fixing an air-gap winding of a dynamo-electric machine An electric machine includes a stator lamination packet having an inner periphery defining a stator bore, a laminted screening packet with an inner periphery and lamination segments formed of magnetic material, and a slot and tooth system disposed on and ... | 10/01/1991 |
| 5051632 | Assembling electric motors with reduced end-play A method of manufacturing fractional horsepower motors involves using each stator to customize the length of a rotor/shaft to match the thickness of the specific stator with which it will be used. This is accomplished by providing a fixture which receives... | 09/24/1991 |
| 5027026 | Brushless motor A brushless motor is disclosed, in which an armature core is secured to a frame through vibration isolating members by a clamping member having an interval regulator regulating so that the vibration isolating members are held within a regulated thickness ... | 06/25/1991 |
| 4990809 | Variable reluctance motor A high torque-to-low mass variable reluctance motor includes a cylindrical stator assembly having a plurality of stator segments circumaxially arranged about a rotor wherein adjacent stator segments are maintained in a spaced apart relation with one anoth... | 02/05/1991 |
| 4968911 | Clam-shell stator construction for electrical machines The invention discloses a dynamoelectric machine having a two piece split-stator for assembly about a shaft mounted rotor. The dynamoelectric machine may readily be incorporated into the design of a device having a rotating shaft such as a jet engine to p... | 11/06/1990 |
| 4947065 | Stator assembly for an alternating current generator A stator assembly for an alternating current generator. The stator core is a one-piece molded part that is formed of iron powder having a particle size in a range of about 10 to 250 microns. The powder is bound together by a thermoplastic material which c... | 08/07/1990 |
| 4916803 | Stator keybar installation using auxiliary plates Keybar slots in support plates of a large generator stator are made substantially oversize to accommodate the full probable distortion of the support plates occurring during fabrication of the stator frame. Keybars are affixed to pairs of auxiliary plates... | 04/17/1990 |
| 4912353 | Two-piece motor stator A two-piece motor stator having; a generally annular inner iron stator core having a plurality of teeth extending radially outwardly from outer surface thereof, an annular outer iron stator core having slots in the inner surface thereof for receiving tip ... | 03/27/1990 |
| 4893041 | Stator end cap insulator assembly including an improved stator liner, stator liner retainer and shading element insulator An improved stator end wire insulation assembly for a stator core wherein molded end cap insulator structure for such stator core includes means to restrain stator core opening free-ended insulation liners from both axial and radial movement, the end cap ... | 01/09/1990 |
| 4883997 | Two pole electric motor constructions with stator winding encircling the rotor and method of assembling same A two-pole electric motor constructions are described which have stator winding encircling the rotor, and the method is described of assembling same. A main stator section is provided with coil bearing surfaces which receive rotor coils after the rotor ha... | 11/28/1989 |
| 4864176 | Stator support structure with stamped end plates A spool-like stator support structure for an inductor type dynamoelectric machine incorporates stamped, annular end plates. Each end plate has a plurality of spaced-apart recessed landings along its outer edge and, preferably, a plurality of axially outwa... | 09/05/1989 |
| 4818911 | Stator of electric motor A stator of an electric motor provides pole retaining portions which retain the poles therein and are radially project at their end portions towards the outer periphery in a ring shape, whereby winding operations around the outer surface of the pole retai... | 04/04/1989 |
| 4816711 | Lanced strip and edgewise wound core A lanced strip of generally thin ferromagnetic material adapted to be edgewise wound into a core for a salient pole dynamoelectric machine. A continuous yoke section of the lanced strip extends generally lengthwise thereof and includes a pair of generally... | 03/28/1989 |
| 4786834 | Stator assembly for dynamoelectric machine An adjustable speed inductor type rotating dynamoelectric machine, capable of high speed operation, employs a stator assembly incorporating a spool-like support structure. A central, generally cylindrical portion of the support structure supports field wi... | 11/22/1988 |
| 4746825 | Alternator core attachment An alternator or generator core attachment is provided for connecting to a ferromagnetic coil of a magneto used in the ignition system of small combustion engines. The attachment includes a radially extending leg portion, on which a generator coil is woun... | 05/24/1988 |
| 4745320 | Induction motor An induction motor has a stator formed by inserting and holding piled steel plates (12) between end plates (11a, 11b) and welding support bars (13) consisting of nonmagnetic metal along the external surface of said piled steel plates.... | 05/17/1988 |
| 4731555 | Lead wire layout in coil units for stepping motor A pair of annular coil units for a stepping motor in which each of the coil units has three coil terminals and the ends of the lead wires connected thereto encapsulated by a synthetic resin thereby forming outwardly extending projections. Recesses are fou... | 03/15/1988 |
| 4730136 | Two-pulse permanent magnet brushless D-C motor The invention provides a two-pulse brushless direct current motor with reluctance auxiliary torque. The rotor has an approximately trapezoidal magnetization with small gaps between the poles. These gaps are positioned so that they come to rest opposite th... | 03/08/1988 |
| 4720646 | Connection terminal assembly for stator coil The opposite end flanges 1d, 1e of a stator bobbin are provided with apertures 1a, 1b and clamping recesses 1c to firmly retain push-inserted terminal plates 3 and lead wires 4 during encapsulation by a molding resin 5. The retention of the terminal plate... | 01/19/1988 |
| 4719382 | Direct-current motor The invention generally concerns a DC motor with an armature, several poles and with field coils surrounding said poles. According to the instant invention, each pole includes two pole halves which are displaced from each other in the peripheral sense by ... | 01/12/1988 |
| 4712292 | Method of assembling a stationary assembly for a dynamoelectric machine A method of assembling a stationary assembly for a dynamoelectric machine includes associating at least one beam in a preselected assembly position with a core at least adjacent a circumferential portion thereof. A set of sections of the core at least adj... | 12/15/1987 |
| 4710665 | Homopolar dynamoelectric machine with self-compensating current collector A homopolar dynamoelectric machine is provided with current collecting structures which produce a peripheral, circumferential component of load current for self-excitation. The current collection structures include brush boxes which are skewed at a first ... | 12/01/1987 |
| 4691131 | Stator laminate impregnation in a liquid-cooled motor A liquid-cooled motor with cooling liquid passages (20a to 20d, 22a to 22d) formed in the laminated core (18) of a stator (16) fixedly disposed so as to surround a rotor (14). A plurality of the cooling liquid passages (20a to 22d, 22a to 22d) are formed ... | 09/01/1987 |
