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| Number | Title | Issue Date |
| 6927525 | Unit core of motor with a yoke comprising an elongated end Disclosed are a unit core and a method manufacturing the same. The unit core is opposite to the neighboring unit core on an electric steel plate in orientation, and its unit yoke has an elongated end extending from a central line connecting a center of a tooth to a ... | 08/09/2005 |
| 6927524 | Rotary electric motor having separate control modules for respective stator electromagnets A rotary brushless electric motor is formed within a cylindrical rotor housing structure that surrounds an annular stator ring. The stator is formed of a plurality of individual power modules and corresponding core segments, each module including electrical control ... | 08/09/2005 |
| 6926504 | Submersible electric pump An improved electrical pump is first provided for use in a wellbore. The pump comprises a stator and a stator housing, and an armature and an armature housing. The stator housing and the armature housing define concentrically nested tubular bodies. The armature hous... | 08/09/2005 |
| 6927506 | Low loss reciprocating electromagnetic device The present invention relates generally to reciprocating electromagnetic devices, and more particularly to a construction of a reciprocating electromagnetic device for reducing secondary losses in magnetically-permeable elements, but without compromising manufactura... | 08/09/2005 |
| 6924575 | Electric machine An electric machine includes a stator having a laminated core comprising a stack of sheet metal stampings having a central opening, a plurality of undercut anchoring elements around the central opening, and a hub which is cast in place in the central opening so that... | 08/02/2005 |
| 6924570 | Stator for an electric motor The invention relates to a stator for an electric motor. Said stator has an annular stator package having a plurality of stator teeth. An annular interconnection unit is located on the end face of said stator package. Said annular interconnection contains diverting ... | 08/02/2005 |
| 6924579 | Electrical machine A motor/alternator is formed by a single toroidal magnet and flux conductors which, in combination with flux switches, create an alternating magnetic circuit around a power coil. The motor/alternator geometry minimizes flux leakage. The form of the flux conductor an... | 08/02/2005 |
| 6922004 | Axial flux motor assembly A power unit assembly which has a pair of mirrored axial flux electric motors having a common axis of rotation, each axial flux motor including a rotor disposed on a rotor shaft and at least one stator disposed in operative relationship to said rotor. A common end p... | 07/26/2005 |
| 6920946 | Inverted motor for drilling rocks, soils and man-made materials and for re-entry and cleanout of existing wellbores and pipes An inverted motor with a drilling utensil attached to or integrated as part of an outer motor housing that rotates around a fixed non-rotating shaft or tube. The non-rotating shaft or tube is attached to a fixed base and can extend to the end or past the end of the ... | 07/26/2005 |
| 6921999 | Electric motor An electromagnetic rotary actuator is driven by a single-phase voltage. Permanent magnets on a rotor interact over a part-cylindrical small airgap with a soft-iron stator having pole teeth that carry at least one winding for rotating the rotor within a limited angul... | 07/26/2005 |
| 6922001 | Process for assembling an alternator stator with clips that allows radial insertion of square wire with small slot openings A stator assembly for an alternator in accordance with the present invention includes a generally cylindrically-shaped stator core having a plurality of core slots formed along the inner surface thereof and defined by a radial depth and wherein a stator coil is disp... | 07/26/2005 |
| 6920682 | Mover assembly of reciprocating motor A mover assembly of a reciprocating motor includes: a mover body disposed at a gap between an inner stator and an outer stator; permanent magnets fixed at an outer circumferential surface of the mover body and reciprocally moved together with the mover body in a dir... | 07/26/2005 |
| 6920683 | Process for producing a rotor assembly of a stepping motor In a stepping motor in which a cylindrical magnet which is magnetized in an axial direction is coupled with a rotary shaft and the magnet is clamped with rotor stacks formed by laminating annular magnetic plates, the surfaces of which are electrically insulated, to ... | 07/26/2005 |
| 6922002 | Motor The compact motor is capable of improving characteristics of torque. In the motor, a stator core includes a main core and a sub-core. The main core is constituted by piling a plurality of first core plates, which respectively have first extended pole sections of the... | 07/26/2005 |
| 6921993 | Geometrically aligning a stator and a base plate for a spindle motor Stator and base plate interface alignment is provided for a spindle motor, meeting design specifications such that motor performance is maintained. A portion of a surface of the stator is separated from the base plate. Accurate stator z-height, parallelism and conce... | 07/26/2005 |
| 6919660 | Linear brushless DC motor with ironcore composite armature assembly A stack assembly is disclosed of the type used in linear brushless DC motors, the stack assembly having a base portion, a plurality of teeth extending from the base portion and about which the windings can be positioned, and in which the plurality of teeth are space... | 07/19/2005 |
| 6919663 | Internal rotor motor A low-ripple multi-phase internal rotor motor has a slotted stator (28) separated by an air gap (39) from a central rotor (36). The rotor has a plurality of permanent magnets (214), preferably neodymium-boron, arranged in pockets (204 | 07/19/2005 |
| 6919664 | High voltage plants with electric motors In a plant comprising one or more electric machines constructed with insulated conductors and connected for heavy current via insulated conductors, the magnetic circuit in at least one of these electric machines is connected directly to a high supply voltage of 20-8... | 07/19/2005 |
| 6917136 | Synchronous machine design and manufacturing Synchronous motors according to the invention operate at higher efficiency, with lower cost, reduced mass and reduced cogging. Magnet dimensions are selected that reduce cogging forces to a negligible amount even though there are fewer slots than normal. Optionally,... | 07/12/2005 |
| 6917134 | Vehicle use ac generator To reduce noise, there is provided an alternator for motor vehicles having a rotor and a stator which is mounted between a pair of brackets. In the alternator a stator core forming the stator is made up of laminations of thin sheets. And at least a part of the thin ... | 07/12/2005 |
| 6914354 | Assembly and method for direct cooling of motor end-winding Methods and related systems providing removal of heat from electric motors via fluid baths. ... | 07/05/2005 |
| 6911760 | Electrical machine An electric motor for electric hand power tools has a housing, a stator received in the housing and having a stator body composed of a plurality of axially abutting lamellas, at least one of the lamellas located in at least one end side end region of the stator body... | 06/28/2005 |
| 6911761 | Horizontal-axis electrical machine A horizontal-axis electrical machine has an built-in stator concentrically surrounded by a number of parallel retaining rings that spaced apart from one another in the axial direction and are connected on their outer circumference on opposing sides in each case by m... | 06/28/2005 |
| 6911795 | Electric motor apparatus and power steering system In an electric motor apparatus of the present invention, both of energized spiral wires 17A and 17B for a first system 18A and a second system 18B cooperate to rotate the rotor 25 in a normal condition, however, when it is happened... | 06/28/2005 |
| 6909205 | Motor assembly allowing output in multiple degrees of freedom A motor allowing multiple degrees of output freedom includes a stator having an interior surface forming at least a portion of a sphere or curved surface and first and second substantially orthogonally positioned stator coils wound on the interior surface. A rotor i... | 06/21/2005 |
| 6909210 | Cooling system for dynamoelectric machine A dynamoelectric machine having a cooling system for removing heat uniformly about the machine. The machine includes a cooling jacket defining a flow path for liquid coolant which extends circumferentially of the machine and which reduces loss of coolant pressure. A... | 06/21/2005 |
| 6909216 | Motor generator A permanent magnet embedded type concentrated winding motor generator, wherein of the mechanically and electrically independent first and second winding groups (4, 5), the plurality of first teeth (2) wound with the first winding groups (4) are ... | 06/21/2005 |
| 6909215 | Electric motor An electric motor comprising a shaft 300 on which is mounted n motor modules (where n is an integer). Each motor module consists of two generally disc-shaped rotors 302 having a coil 304 sandwiched between them. Each rotor/coil module is separat... | 06/21/2005 |
| 6906440 | Bracket assembly having a plurality of plates for a dynamoelectric machine A bracket assembly for a dynamoelectric machine includes a base plate and a bracket support assembly. The bracket support assembly includes a first end plate, a second end plate and a support member connected to at least one support plate. The bracket support assemb... | 06/14/2005 |
| 6906444 | Permanent magnet motor Each permanent magnet formed in an open-letter shape is divided into a plurality of parts, the divided magnets are respectively fitted in open letter-shaped inserting portions, and ribs are respectively provided in dividing portions of the permanent magnets. Accordi... | 06/14/2005 |
| 6903476 | Permanent magnet type three-phase stepping motor A permanent magnet type three-phase stepping motor that is simple in construction, with vibration, a reduced unbalance force in the radial direction, and high torque that can be manufactured at a low cost is disclosed. The permanent magnet type three-phase stepping ... | 06/07/2005 |
| 6902013 | Electric power tool with a plurality of operational component groups accommodated in separate housings An electric power tool has a plurality of operational component groups; a plurality of separate housings which accommodate the operational component groups, the housings being couplable with one another in series, at least one of the housings being composed of a syn... | 06/07/2005 |
| 6903480 | Core having axially assembled core sub-parts and dynamo-electric machine member having the same Teeth of a first core sub-part and teeth of a second core sub-part are alternately arranged in a circumferential direction. Each tooth has a tooth main body, which may include two tilted portions at two opposed circumferential ends, respectively, of the tooth main b... | 06/07/2005 |
| 6901649 | Method of manufacturing a winding assembly for an alternator A stator winding includes a plurality of winding sub-portions in each of which a strand of wire formed from a continuous wire is wound so as to alternately occupy an inner layer and an outer layer in a slot depth direction within slots at intervals of a predetermine... | 06/07/2005 |
| 6900569 | Increased torque in retarder brake system through use of conductive layer Electromagnetic retarder brake systems, and methods for their use, are provided utilizing specified thickness conductive layers. The specified thickness of the conductive layer in each system is determined to obtain a certain desired torque at a certain desired low ... | 05/31/2005 |
| 6900574 | Stepping motor A stepping motor 10 comprises a rotor 3 of a permanent magnet 2 having multiple poles magnetized in the circumferential direction, and multiple stator yokes 5a and 5b disposed on the outer periphery of this rotor 3... | 05/31/2005 |
| 6897596 | Electric motor An electric motor comprising a rotor and a stator is disclosed. The rotor is supported on a substantially spherical bearing and is of a substantially spherical design facing the stator, which has a high degree of efficiency. The stator may have a magnetic return-pat... | 05/24/2005 |
| 6897595 | Axial flux motor with active flux shaping An improved electric motor design wherein the interior surface of the stator has a plurality of corrugations intersected by annular grooves formed therein and a corresponding number of rotor disks having permanent magnets secured to their outer surface, the permanen... | 05/24/2005 |
| 6897591 | Sensorless switched reluctance electric machine with segmented stator A sensorless switched reluctance machine includes a stator with a plurality of circumferentially-spaced stator segment assemblies that include salient stator poles and inter-polar stator slots. Each of the stator segment assemblies includes a stack of stator plates ... | 05/24/2005 |
| 6896492 | Magnetically driven air moving apparatus, with magnetically tipped fan blades and a single field coil and core An improved air moving device that is scalable for use in a variety of applications requiring different fan sizes. The fan includes a number of fan blades, each having a discrete magnet mounted thereon. The orientation of each magnet is such that the direction of th... | 05/24/2005 |
