| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 310060000 | Hollow passages | 24 |
| 20080315728 | Linear Actuator - An actuator. In one embodiment, the actuator comprises a reversible electric motor having a stator having a housing, a rotor housed in the housing of the stator, and a shaft having a forward portion and a rearward portion extending oppositely and coaxially from the rotor, respectively; a fan member coaxially attached to the forward portion or the rearward portion of the motor shaft such that the fan member is operable simultaneously with the rotor of the reversible electric motor; and an electromagnetic brake movable between a first position and a second position, positioned in relation to the fan member such that when the electromagnetic brake is in the first position, the fan member is rotatable with the rotor of the reversible electric motor, and when the electromagnetic brake is in the second position, the fan member stops rotating firmly, thereby causing the motor stops instantly. | 12-25-2008 |
| 20080315729 | ELECTRIC ACTUATOR - An electric actuator comprised of an electric motor and a wave gear speed reducer connected to the electric motor efficiently air-cools the electric motor and a wave generator of the speed reducer and obviates the need for increasing the axial length of the actuator. The wave generator has a plurality of holes penetrating in the axial direction, the holes being arranged with intervals provided in the circumferential direction. A partitioning portion between the holes constitutes a vane portion which blows air in the axial direction. An internal space wherein a coil of the electric motor is disposed is in communication with an internal space of the speed reducer, and the vane portion blows air into the internal space of the electric motor. An air cooling passage is formed in a stator of the electric motor such that air flows into the air cooling passage when the vane portion blows air. | 12-25-2008 |
| 20090167120 | COOLING FAN BUILT INTO ROTOR - A cooling fan includes a fan ring to be attached to an end surface of a rotor core near the outer circumference thereof, and a plurality of fins connected to the fan ring. The fan ring has positioning leg portions provided on an end surface thereof facing a thrust direction. The fan ring is positioned in relation to the rotor core through insertion of the positioning leg portions into core slots of the rotor core. The fan ring has wire accommodation recesses which are formed on the end surface of the fan ring facing the thrust direction and communicate with the core slots. | 07-02-2009 |
| 20100320878 | Electrical Rotating Machine - A direction in which cooling air generated by a cooling fan flows to be discharged is perpendicular or nearly perpendicular to a direction in which diffusers are inclined. Thus, airflow resistance is increased by the diffusers, and the cooling air cannot be efficiently discharged from discharge ports provided circumferentially in an outer peripheral portion of a housing. Further, a stator coil cannot be sufficiently cooled. An electrical rotating machine includes: a rotor having a cooling fan on an end face of the rotor; a stator that is arranged opposite the rotor and has a stator coil with a rotation clearance provided between the stator and the rotor; a housing that holds the rotor and the stator; a plurality of intake ports that are provided in a side wall portion of the housing; a plurality of discharge ports that are provided circumferentially in an outer peripheral portion of the housing; and a plurality of diffusers that are provided circumferentially on an inner wall surface of a corner portion of the housing, the diffusers inclining toward the side opposite to a rotational direction of the rotor. | 12-23-2010 |
| 20110074254 | ELECTRIC MOTOR HAVING A RAIN GUARD - A motor includes a shaft that extends along a rotational axis and an end frame that includes a first surface that is substantially normal to the axis. A first plurality of annular features are arranged concentrically about the rotational axis and coupled to the first surface. A fan is mounted to the rotating shaft and including a slinger portion and a second surface. A second plurality of annular features are arranged concentrically about the rotational axis and coupled to the second surface. The first plurality of annular features cooperate with the second plurality of annular features to form a non-contact seal between the fan and the end frame. | 03-31-2011 |
| 20110175494 | ROTOR FOR AN ELECTRIC MOTOR - A rotor of an electric motor has a carrier structure including a disc portion to which is centrally connected a shaft, and the periphery of which is joined to an essentially cylindrical annular skirt portion which in use extends coaxially around the stator. The disc portion has a plurality of slots between which there is defined a corresponding plurality of spokes. At least some of the spokes have, in a circumferential direction, a transverse cross-section shaped in a manner to induce, at least when the rotor rotates in one direction, an at least approximately axial air flow through corresponding slots. | 07-21-2011 |
| 20110215681 | Airflow Passage Arrangement for Claw-Pole Electric Machines - An electric machine includes a stator and a rotor configured to rotate about an axis of rotation in a direction of angular rotation. The rotor includes a first claw-pole segment and an opposing second claw-pole segment. The first claw-pole segment includes a plurality of fingers extending from an end ring. Each finger includes a distal end and a proximal end with the proximal end fixed to the end ring. Each finger also includes an interior side and an exterior side with the exterior side facing the stator. A leading side and a trailing side are defined on each finger by the direction of angular rotation. A chamfer is formed on the exterior trailing side of each finger at the proximal end of the finger. | 09-08-2011 |
| 20110241497 | ELECTRICAL MACHINE HAVING A CONTACT ELEMENT FOR ELECTRICALLY CONNECTING ELECTRICAL COMPONENTS - An electrical machine, in particular a generator, preferably a claw pole generator, having a contact element for electrically connecting electrical components, which is made up of a generally arc-shaped, electrically non-conductive substrate having arc end areas, including electrical conductors for connecting the components. At least one of the electrical conductors is designed as an external connection conductor, which runs outside the substrate from one arc end area to the other arc end area. | 10-06-2011 |
| 20120119627 | ELECTRIC MOTOR - An electric motor includes a stator and a rotor rotatably installed in the stator. The stator includes a pair of end caps disposed at opposite ends thereof, and a pair of bearings respectively fixed to outer surfaces of the end caps from outside thereof. The rotor includes a shaft pivotally supported by the bearings. | 05-17-2012 |
| 20120299449 | Automotive Alternator - To provide a high-quality, high-output, and low-cost automotive alternator by suppressing heat generation through the reduction of current loss in a heat dissipating plate of a rectifier without expanding a space for placing the heat dissipating plate and reducing the cooling performance of the heat dissipating plate. An automotive alternator includes a rectifier, wherein the rectifier is configured such that a heat dissipating plate of positive pole to which the rectifier element of positive pole is mounted is disposed opposite to a heat dissipating plate of negative pole to which a plurality of rectifier elements of negative pole are mounted; wherein the heat dissipating plate of positive pole is made up of a first heat dissipating plate and a second heat dissipating plate, which are made of two different materials. | 11-29-2012 |
| 20120326572 | ALTERNATOR FOR VEHICLE WITH HEAT DISSIPATING FIN - An alternator for a vehicle is provided which is equipped with a heat dissipator and a cooling air generator. The heat dissipator is disposed in a rectifier to cool rectifying devices. The cooling air generator generates a flow of cooling air to the heat dissipator. The heat dissipator has a plurality of sub-fins formed thereon. Each of the sub-fins is defined by a combination of a protrusion and a recess. The protrusions are formed on one of opposed major surfaces of the heat dissipator, while the recesses are formed on the other major surface, one in coincidence with each of the protrusions in a thickness-wise direction of the heat dissipator. This permits the heat dissipator to be pressed to form the protrusions and the recesses to make the sub-fins simultaneously, thus allowing a heat-dissipating area to be increased to ensure a desired degree of heat capacity thereof. | 12-27-2012 |
| 20130057117 | IN-WHEEL MOTOR DRIVE DEVICE - A plurality of circumferential fins | 03-07-2013 |
| 20130076212 | SWITCHED RELUCTANCE MOTOR - Disclosed herein is a switched reluctance motor including: a stator part including a plurality of salient poles formed at an inner peripheral surface thereof and coils wound around the salient poles; and a rotor part rotatably inserted into an inner portion of the stator part to thereby rotate in one direction by a reluctance torque, wherein the rotor part includes: a rotor including a rotor core provided with a shaft hole into which a shaft is inserted and a plurality of rotor salient poles formed to be protruded from the rotor core so as to face the salient poles of the stator part; and a blade part disposed between the rotor salient poles to thereby generate a fluid flow in a direction of the shaft. | 03-28-2013 |
| 20130082578 | DYNAMOELECTRIC MACHINE HAVING AN INTEGRATED FAN - A dynamo-electric machine, in particular a multi-pole dynamo-electric machine includes a shaft and an integrated fan which is connected to the shaft by a friction-wheel planetary gear. The friction-wheel planetary gear has first and second rolling bearings, with the first rolling bearing having an outer ring mounted in the hub of the fan, and the second rolling bearing having an outer ring which is press-fitted in the hub of the fan. Arranged between the first and second rolling bearings is a driving bush for transmitting a rotational speed of the shaft onto balls of the second bearing to thereby increase a rotational speed of the fan by a predefined factor compared to the rotational speed of the shaft. | 04-04-2013 |
| 20130119830 | FLUID-COOLED ELECTRIC MACHINE - A fluid-cooled electric machine includes a fluid circuit and an integrated pump element which executes a pumping action to conduct fluid through the fluid circuit as a result of a rotational movement of the electric machine. The electric machine includes a stator and a rotor arranged to demarcate with the stator a conical air gap which is flooded with fluid. | 05-16-2013 |
| 20130127303 | COOLING STRUCTURE FOR BRUSHLESS MOTOR - A cooling structure for a brushless motor, which includes a stator, a rotor, and a motor shaft arranged integrally with the rotor. The stator includes a stator core including an inner circumferential surface, a cylindrical portion including first and second end surfaces adjacent to the inner circumferential surface, and teeth projecting from the inner circumferential surface. An insulator covers the inner circumferential surface, the first and second end surfaces, and the teeth. A coil is wound around each tooth that is covered by the insulator. The cooling structure includes a cooling fan coupled to one end of the motor shaft and arranged closer to the second end surface than the first end surface. At least one ventilation recess is arranged between two adjacent ones of the teeth in the circumferential direction in a portion of the insulator that covers the first end surface. | 05-23-2013 |
| 20130193811 | INDUCTION ROTOR END RING SUPPORT DEVICE - An induction rotor includes a rotor core having an axial end surface, an end ring proximate the axial end surface that provides electrical communication between respective ends of conductor bars extending through the rotor core, and an end ring support structure that includes a ring member at least partially embedded in the end ring. An end ring support structure may have at least one axially extending member coupled with the ring member, such axially extending member projecting axially inwardly of the axial end surface and engaging the rotor core. An end ring support structure may include a ring member having an axially extending portion embedded in the end ring between radially inner and outer surfaces of the end ring whereby the end ring includes an outer portion, radially outwardly of the axially extending portion, and an inner portion disposed radially inwardly of the axially extending portion of the ring member. | 08-01-2013 |
| 20130221809 | HOIST | 08-29-2013 |
| 20130342084 | MOTOR WITH INTERNAL DRIVER - The present invention provides a motor with an internal driver comprising: a shell, having a stator, a rotor and a drive shaft attached to said rotor in an internal thereof; a front cover; a rear cover; ends of a drive shaft penetrating through holes of the front and rear covers respectively to the external. The inner surface of rear cover comprises outer and inner circumferential walls and a receiving space is defined by the outer and inner circumferential walls and inner surface of the rear cover. A driver is provided within said receiving space and the outer surface of rear cover is provided with a bearing slot to receive a bearing. An inner diameter of the inner circumferential wall is greater than the drive shaft; and said inner diameter of said inner circumferential wall is smaller than the annular diameter of the bearing in the bearing slot. | 12-26-2013 |
| 20140062265 | BRUSHLESS DC MOTOR - A brushless DC motor, including: a motor body; a damping ring; a mounting bracket; a locking device; and a controller. The controller includes: a control box, and a circuit board. Two sides of the mounting bracket are convex upward to form two supporting plates, respectively. Each supporting plate is provided with a recess. The damping ring is disposed on each end of the motor body. A bottom of the damping ring matches with the recess of the mounting bracket. The damping ring is fixed on the mounting bracket by the locking device. The circuit board is arranged inside the control box. The control box is disposed on the motor body. | 03-06-2014 |
| 20140091680 | ROTARY ELECTRIC MACHINE AND BEARING CHANGING METHOD - A rotary electric machine includes a stator core; a rotor that includes a laminated core, core holders, and cooling fans; a frame that includes a tubular unit that encloses the stator core and the rotor, and a first bracket and a second bracket that extend in a direction of a rotor shaft and supports the rotor shaft; and cartridges that are detachably attached to the first bracket and the second bracket and rotatably supports the rotor shaft, wherein groove-like or hole-like holding portions, which hold end portions of bearing attaching and detaching jigs inserted through the first bracket and the second bracket, are provided in the cooling fans. | 04-03-2014 |
| 20140152154 | Rotary Electric Machine - A rotary electric machine according to the present invention includes a stator including a stator core and stator coils, a rotor provided rotatably with a gap to the stator, a housing that stores the stator and the rotor, a fan that circulates air inside the housing through the gap in the housing, a heat exchanger that cools the air circulated by the fan, and an air guiding plate including an air guiding route formed therein for guiding the air cooled by the heat exchanger such that the cooled air flows into the gap without coming into contact with the stator coils. | 06-05-2014 |
| 20140191623 | BREATHING ELECTRIC MOTOR - An electric motor has efficient self-cooling. The electric motor contains a rotor that is rotatably mounted with respect to a stator. On a first sub-segment of an end face of the rotor, a first air-guiding contour is formed that, during rotation of the rotor in a reference rotation direction, generates an outwardly directed air flow. On a second sub-segment of the same end face, a second air-guide contour is formed that, during rotation of the rotor in a reference rotation direction, generates an inwardly directed air flow. | 07-10-2014 |
| 20140197715 | ELECTRIC MOTOR WITH IMPROVED FLUX PATH AND POWER DENSITY - An improved configuration for an electric motor has an inner rotor and an outer stator wherein each stator coil is arranged radially outwardly of its respective stator pole and configured to create a magnetic flux path forming a closed magnetic circuit that flows in directions parallel to the longitudinal axis of the motor, rather than circumferentially about the longitudinal axis of the motor. The magnetic flux created by the stator coil is directed from the stator pole, across the air gap to a corresponding rotor pole, and back to the stator pole to form a closed magnetic circuit path. All stator poles are therefore magnetically isolated from each other. | 07-17-2014 |
| 20140232245 | VEHICLE AC GENERATOR - Provided is a vehicle AC generator having a retainer attached on a bearing containing portion of a front bracket, thereby realizing temperature reduction in a bearing without deteriorating the cooling performance as a whole. In the vehicle AC generator, a front bracket | 08-21-2014 |
| 20140265738 | ELECTRICAL MACHINES AND METHODS OF ASSEMBLING THE SAME - A motor having an axis of rotation is provided. The motor includes a housing, a first shaft coupled to the housing and a second shaft coupled to the first shaft. The motor further includes a stator coupled to the housing and comprising an outer circumferential surface and an inner circumferential surface, wherein the inner circumferential surface defines a stator bore around the axis of rotation. A gearbox is coupled to the first shaft and to the second shaft and positioned within the stator bore. The motor includes a rotor coupled to the first shaft and adjacent the stator. | 09-18-2014 |
| 20140265739 | DC BRUSHLESS MOTOR - A DC brushless motor includes a housing including a plurality of attachment portions each of which is arranged to extend toward an apparatus, a base portion joined to the attachment portions, and a bearing holding portion joined to the base portion; a bearing member held by the bearing holding portion; a shaft supported by the bearing member to be rotatable about a central axis, and including a portion on one axial side to which blades that perform stirring in a heating chamber are joinable; a rotor holder fixed to the shaft; a rotor magnet held on an inside of a cylindrical portion of the rotor holder; a stator arranged radially inside the rotor magnet; and a circuit board electrically connected with the stator, and arranged axially opposite the opening of the rotor holder. | 09-18-2014 |
| 20140292163 | ELECTRIC MOTOR WITH COOLING APPARATUS | 10-02-2014 |
| 20140339964 | ALTERNATOR FAN - An alternator fan includes a base member having a central hub, an outer peripheral edge, and a web that extends between the central hub and the outer peripheral edge, and a plurality of openings extending through web. A plurality of fan blade elements is arranged in corresponding ones of each of the plurality of openings. | 11-20-2014 |
| 20150042213 | ELECTRIC MACHINE HAVING VENTURI EFFECT COOLING ENHANCEMENT - A rotary electric machine through which cooling air is passed during machine operation, having a frame air inlet, a frame air outlet, and a first airflow space from which a first portion of cooling air is expelled through the frame air outlet. A cover defines a second airflow space from which a second portion of cooling air is drawn through a cover air outlet and expelled with the first portion of cooling air through the frame air outlet, movement of the second portion of the cooling air through the second airflow space and the cover air outlet being induced by a venturi effect responsive to movement of the first portion of cooling air past the cover air outlet. Also, methods of moving cooling air through a rotary electric machine. | 02-12-2015 |
| 20150042214 | POWER TOOL HAVING IMPROVED MOTOR FAN ASSEMBLY - An electric motor includes a stator, an armature shaft rotatable with respect to the stator, and a lamination stack mounted on the armature shaft and having radially extending teeth forming slots therebetween circumferentially around a periphery of the lamination stack. An armature end insulator is provided at an end of the lamination stack having a base portion fitted around the armature shaft and insulating teeth corresponding to the radially extending teeth of the lamination stack and forming slots therebetween. Motor coils are wound in the lamination stack slots and the end insulator slots. The motor further includes a fan having blades attached to a fan ring and mounted to an end of the lamination stack. The fan ring includes longitudinally-extending tongues arranged to be mounted at the end of the lamination stack and the end insulator includes a plurality of longitudinally-extending notches corresponding to the tongues of the fan ring to allow the tongues to be in direct contact with the end of the lamination stack. | 02-12-2015 |
| 20150061470 | STATOR FOR ROTATING ELECTRIC MACHINE - A stator includes an annular stator core, a stator coil and at least one protective wall. The stator core has a plurality of slots formed therein. The slots are spaced from one another in a circumferential direction of the stator core. The stator coil is comprised of a plurality of windings mounted on the stator core. The windings are connected in a predetermined manner to form a plurality of connection portions therebetween. The connection portions are located outside the slots of the stator core on one axial side of the stator core. The at least one protective wall is provided radially inside the connection portions of the stator coil so as to shield the connection portions from the radially inside of the stator. | 03-05-2015 |
| 20150069883 | COMPONENT FOR AN FOR AN ELECTRIC MACHINE - An electric machine component includes a rotor assembly having a body provided with a number of pole members and a central hub. The body includes at least one mounting member projecting radially outwardly of the central hub. A fan member is mounted to the rotor. The fan member includes a hub portion and a number of fan blades projecting radially outwardly from the hub portion. The fan member includes at least one mounting element extending radially outwardly of the hub portion. The at least one mounting element is configured and disposed to engage with the at least one mounting member to radially and axially constrain the fan member to the rotor. | 03-12-2015 |
| 20150069884 | COMPONENT FOR AN ELECTRIC MACHINE - An electric machine component includes a rotor assembly having at least one claw pole member having a number of pole members, an outer fan member support surface, and a central hub projecting from the outer fan member support surface. The central hub includes an anti-rotation member and a substantially planar bearing surface. | 03-12-2015 |
| 20150069885 | MOTOR ASSEMBLY WITH INTEGRATED COOLING MEANS AND ENCLOSED COMPARTMENT FOR ELECTRONIC CIRCUITRY - A motor assembly includes a structural unit for mounting a motor, for mounting and enclosing electronic circuitry, and for providing a corridor for air to flow and cool the motor and/or the electronic circuitry. The motor assembly includes a substantially water-resistant motor that rotationally drives a fan for cooling the motor and/or rotationally drives a propeller for providing propulsion to watercraft. The electronic circuitry of the motor assembly receives and transmits instructions to a command post by way of electronic signals and distributes power to the motor. The structural unit seals the circuitry from the surrounding environment. | 03-12-2015 |
| 20150076970 | ROTARY ELECTRIC MACHINE - A rotary electric machine is provided which includes a rotor, a stator, a power circuit which includes a power element, a control circuit which controls the power element, a frame which accommodates the rotor and the stator, a cooling fin which is made of metal and is connected to the frame to cool the power circuit, and a fixing member which is made of metal and is connected to the cooling fin to fix the control circuit. | 03-19-2015 |
| 20150123517 | ROTARY ELECTRIC MACHINE AND BEARING CHANGING METHOD - A rotary electric machine includes a stator core; a rotor that includes a laminated core, core holders, and cooling fans; a frame that includes a tubular unit that encloses the stator core and the rotor, and a first bracket and a second bracket that extend in a direction of a rotor shaft and supports the rotor shaft; and cartridges that are detachably attached to the first bracket and the second bracket and rotatably support the rotor shaft, wherein groove-like holding portions, which hold end portions of bearing attaching and detaching jigs inserted through the first bracket and the second bracket, are provided in the cooling fans. | 05-07-2015 |
| 20150318748 | ROTOR AXLE OF A HIGH SPEED PERMANENT MAGNET MACHINE - A rotor axle of a high speed permanent magnet machine including a first part and a second part, both manufactured from a magnetically non-conducting material. The parts include an inner end and an outer end, and they can be axially interconnected one after the other by the inner ends to constitute an integral rotor axle. Their outer ends include bearing structures to fit the rotor axle with bearings. A cylindrical and solid permanent magnet is provided coaxially with the first part and the second part in between them and magnetized perpendicularly to the axial direction of the cylinder. The inner end of the first part of the rotor axle includes a cylindrical external surface with an external thread, the inner end of the second part includes a cylinder sleeve having an internal base part corresponding in shape to the cylindrical permanent magnet to constitute a space for the permanent magnet. | 11-05-2015 |
| 20150364962 | GENERATOR GAS SHIELD SUPPORT DEVICE AND METHOD OF REMOVING GENERATOR GAS SHIELD - The disclosure includes a generator gas shield support device, and method of removing the generator gas shield using the support device. In one embodiment, the generator gas shield support device of a generator system includes a first support coupled to a generator rotor of the generator system. The first support of the generator gas shield support device is configured to releasably couple a first portion of a generator gas shield to the generator rotor of the generator system. The generator gas shield support device may also include a second support releasably coupled to the generator rotor. The second support is configured to support the first portion of the generator gas shield during a rotation of the generator rotor. | 12-17-2015 |
| 20160126794 | Electric Motor With Laminated Sheet Windings - An electric machine employs laminated sheets windings (LSWs) and permanent magnets which rotate about the LSWs. A ‘radial’ embodiment employs magnets which are magnetized radially and LSWs laid parallel to the rotation axis. An ‘axial’ embodiment uses axially magnetized magnets with LSWs laid radially in the plane of the motor. The magnets may be arranged as Halbach arrays. Magnets and LSWs are arranged concentrically with an air gap therebetween; the motor may employ “Large Air Gap Electric Ring” (LAGER) technology. The laminated sheets form a continuous stack of series-connected concentric metal layers; dielectric layers insulate each metal layer from its adjacent layers. Cuts arranged periodically around each LSW run parallel to the rotation axis and extend through all of the metal layers, with adjacent cuts originating on opposite sides of the LSW such that they form a serpentine path for current to flow as it flows around the winding. | 05-05-2016 |
| 20160134174 | HEAT DISSIPATION APPARATUS FOR MOTORS - The present disclosure relates to a heat dispersion apparatus for motors, which comprises: a cooling fan, and a guide cover. The cooling fan has a plurality of fan blades disposed radially on a back plate, the outside portion he fan blades axially extend beyond the periphery of the back plate, and the back plate is an oblique cone structure. The guide cover has air inlet, a plurality of holes opened on the surface of the air inlet with slots, the slots arranged in accordance with the rotation direction of the cooling fan, and each slot set up a chamfer for leading into more air to reduce temperature. With the aforesaid device, the airflow supercharging and peripheral axial flow increment are improved, and the hole slot structure of the cooling fan blades can introduce large scale of air, the present invention provides a significant improvement to motors. | 05-12-2016 |
| 20160164367 | CLAW ROTOR COMPRISING A CLIP FOR SECURING AN END WIRE OF THE WINDING, AND ASSOCIATED ELECTRICAL MACHINE - A claw pole rotor comprises a shaft, first and second polar wheels fastened to the shaft, a winding provided with a winding insulator and surrounded by the first and second polar wheels, a commutator provided with at least one commutator ring, a fan fastened to the first polar wheel and disposed between the winding and the at least one commutator ring, at least one end-of-winding wire being linked to one of the at least one commutator rings, passing through a radial cavity provided between the fan and the first polar wheel. The winding insulator comprises a clip retaining the one end-of-winding wire. The retaining clip is fastened to the winding insulator and comprising crimping means intended to be disposed in the radial cavity to crimp the part of the end-of-winding wire extending into the radial cavity. | 06-09-2016 |
| 20160172936 | Drive System | 06-16-2016 |
| 20160181893 | MULTIPHASE FRACTIONAL SLOT CONCENTRATED WINDING MACHINE WITH END MOUNTED DETACHABLE OR INTEGRATED MULTIPHASE SERIES CONVERTER CIRCUIT | 06-23-2016 |
| 20160197525 | BRUSHLESS MOTOR | 07-07-2016 |
| 20160204677 | MOTOR WITH HEAT DISSIPATION STRUCTURE | 07-14-2016 |
| 20180026494 | MICRO FAN | 01-25-2018 |
| 20090026893 | Housing for an Electrical Machine - The housing of an electrical machine should, despite efficient cooling, be provided with a more compact design. To this end, the invention provides that the cooling ducts ( | 01-29-2009 |
| 20090108714 | BEARING AND COVER ASSEMBLY FOR A ROTATING ELECTRICAL MACHINE AND A ROTATING ELECTRICAL MACHINE CONTAINING SUCH AN ASSEMBLY - Protective bearing and cover assembly, for an internally ventilated rotating electrical machine, has centrally an axially orientated axis and comprises on the one hand at least one electronic component carried by the bearing and protected by the cover having at least one radial opening for the passage of air, at least one axial opening for the entry of air, a generally axially orientated skirt and a generally transversely orientated base part, in which is located the axial air inlet opening, which is offset axially in relation to the radial opening for the passage of air, and on the other at least one shaft for the cooling of the generally axially orientated electronic component ; the radial opening for the passage of air constitutes the outlet of the cooling shaft whereas the skirt constitutes one of the internal and upper walls of the cooling shaft. The rotating electrical machine consists of an alternator or a starter-alternator or an alterno-starter comprising such an assembly. | 04-30-2009 |
| 20090108715 | DEVICE FOR COOLING AN ELECTRICAL MACHINE AND ELECTRICAL MACHINE HAVING SUCH A COOLING DEVICE - The invention relates to a device ( | 04-30-2009 |
| 20090174294 | DEFLECTOR FOR AN ELECTROMAGNETIC RETARDER AND ELECTROMAGNETIC RETARDER INCLUDING ONE SUCH DEFLECTOR - A deflector for an electromagnetic retarder including a rotary shaft with a fan for circulating a cooling gas to the induction coils which are intended, upon command, to generate Foucault currents in a stator surrounding the rotary shaft and the induction coils. The inventive deflector ( | 07-09-2009 |
| 20090302717 | Brushless motor apparatus and method - The present invention is a brushless electric motor that can be used in high performance applications, such as model airplanes. The rotor assembly, which includes the rotor shaft, encloses a winding core, which is part of a fixed stator assembly. Conducting wire in the armature portion of the stator assembly is wrapped around a set of spokes, extending radially from an inner hub. The spokes are formed from a stack of flat metal laminations, the laminations oriented perpendicular to the rotation axis. The spokes are wrapped with a single layer of copper wire, which is connected to the energy source when the motor is operational. These spokes are long relative to the diameter of the inner hub, leaving V-shaped slots through the winding core. Openings in both end bells allow air to freely flow into the core, cooling the single layer of conducting wire. Using a wedge to force the wire against the spokes during varnishing results in close contact between the wire and the conducting material in the winding core. When the motor is operational, this contact causes the winding core to act as a heat sink, allowing a relatively heavy motor to sustain high power without damage. | 12-10-2009 |
| 20100019626 | STATOR WEDGE FOR AN ELECTRIC MACHINE - Electric machines with, and related methods for, improved fluid flow through the electric machines are disclosed. According to some implementations, an electric machine may include a central opening and a plurality of teeth facing inwardly toward the central opening. Slots may be defined between adjacent teeth, and a wedge may be disposed in one or more of the slots, partitioning the slots into a coils portion and an open portion. A gap may be defined between the stator core and the rotor. A fluid flow path defined from the gap and the open portions of the slots provide for improved fluid flow through the electric machine. Wedges disposed in the slots to maintain the coils into a packed state. | 01-28-2010 |
| 20100026145 | SEALED TYPE ELECTRIC ROTATING MACHINE - In a sealed type electric rotating machine, in which a cooling medium inflows from both end sides of a rotating shaft of a claw-pole type rotor, a cooling medium having passed through a heat exchanging part divides into one on an exhaust side and one on an intake air side to be used again for cooling of the claw-pole type rotor and a stator. On the exhaust side, a cooling medium being high in temperature as compared with that on the intake air side performs cooling, and the rotor and the stator are made higher in temperature on the exhaust side than on the intake air side. In order to level temperature profiles of the claw-pole type rotor and the stator in an axial direction, a partition, which cuts off an axial duct, is provided toward the exhaust side relative to a center in the axial direction. | 02-04-2010 |
| 20100072863 | END WINDING COOLING - A rotary cooling system is provided that includes a stator having at least one tooth and a plurality of wires coiled around the tooth and a passage extending between the plurality of wires. | 03-25-2010 |
| 20100289386 | COOLING SYSTEM FOR ROTATING MACHINE - An electrical machine comprising a rotor is presented. The electrical machine includes the rotor disposed on a rotatable shaft and defining a plurality of radial protrusions extending from the shaft up to a periphery of the rotor. The radial protrusions having cavities define a fluid path. A stationary shaft is disposed concentrically within the rotatable shaft wherein an annular space is formed between the stationary and rotatable shaft. A plurality of magnetic segments is disposed on the radial protrusions and the fluid path from within the stationary shaft into the annular space and extending through the cavities within the radial protrusions. | 11-18-2010 |
| 20110037353 | METHOD FOR MANUFACTURING THE FRAME OF AN ELECTRIC MACHINE, AN ELECTRIC MACHINE AND A FRAME OF AN ELECTRIC MACHINE - A method for manufacturing the frame of an electric machine in which stator is formed, a first sheath of sheet metal is formed around and attached to a stator by laser welding and a cooling element is attached to the first sheath by laser welding. The electric machine includes at least a frame, a stator attached to the frame, an axis, a rotor attached to the axis and the front flange to which a bearing casing has been fitted in order to fit the bearing used to support the axis. The bearing casing has been fitted into the front flange in such a manner that the bearing can be placed into the bearing casing from inside the frame. In addition, the disclosure relates to the frame of an electric machine. | 02-17-2011 |
| 20110140582 | ROTATING ELECTRICAL MACHINE - A rotating electrical machine includes: a rotor comprising a rotor core and a field winding wound round the rotor core; and a stator comprising a stator core and a stator winding wound round the stator core. The stator is arranged in opposition to the rotor with a predetermined spacing therebetween. the stator core is formed by punching a split piece, which comprises teeth for insertion of the stator winding thereinto and a core back on an outer periphery thereof, from a magnetic steel sheet, and laminating a plurality of those circular configurations in an axial direction, in which a plurality of the split pieces are arranged in a circle in a circumferential direction. The stator core has magnetic steel sheets, which are different in magnetic permeability in a diametrical direction, laminated at an axial end region of and in an axial central region of the stator core. | 06-16-2011 |
| 20110163640 | Rotor cooling for a dynamoelectric machine - A rotor for a dynamoelectric machine is disclosed. A bottom duct is disposed in the rotor, through which a cooling medium flows and conductors are cooled via radial ducts during operation. The bottom duct is embodied such that the cross section thereof decreases towards the center of the rotor. | 07-07-2011 |
| 20120080982 | Internal Cooling of Stator Assembly in an Electric Machine - Embodiments of the invention provide an electric machine module including an electric machine with a stator assembly. The stator assembly includes a plurality of stator laminations coupled together and a plurality of conductors positioned through axial slots of the plurality of stator laminations. The electric machine module also includes a coolant channel at least partially defined within the axial slots and a housing. The housing at least partially circumscribes the electric machine and at least partially defines a machine cavity which is in fluid communication with the coolant channel. | 04-05-2012 |
| 20120080983 | STATOR WITH COOLING SYSTEM AND ASSOCIATED MOTOR - An electric motor is disclosed that includes a rotor having an axis and being rotatable about the axis. A stator is positioned about the rotor and includes a plurality of laminates with each laminate in the plurality of laminates including a peripheral edge defining a notch. The plurality of laminates includes a plurality of laminate subsets, with the laminates in each laminate subset arranged with the notches aligned to define a passage. The laminate subsets are arranged such that the passages defined by the laminate subsets form a substantially helical channel along the periphery of the stator. | 04-05-2012 |
| 20120286628 | Axial gap electrical machine - An axial gap electrical machine employs unique architecture to (1) overcome critical limits in the air gap at high speeds, while maintaining high torque performance at low speeds, while synergistically providing a geometry that withstands meets critical force concentration within these machines, (2) provides arrangements for cooling said machines using either a Pelletier effect or air fins, (3) “windings” that are produced as ribbon or stampings or laminates, that may be in some cases be arranged to optimize conductor and magnetic core density within the machine. Arrangements are also proposed for mounting the machines as wheels of a vehicle, to provide ease of removing and installing said motor. | 11-15-2012 |
| 20130119829 | ELECTRICAL MOTOR INCORPORATING INTERNAL ROTOR COOLING - An electrical motor includes a shaft and a rotor mounted upon the shaft. The shaft includes an inlet for cooling air, and an internal passageway for conducting cooling airflow through the inlet caused by rotation of the shaft. The passageway includes a first portion extending axially through the shaft along a longitudinal portion of the shaft upon which portion the rotor is mounted, and a second portion extending radially outwardly from the first portion and leading to an airflow outlet on an outer surface of the shaft. | 05-16-2013 |
| 20130169118 | Electric Generator and Hybrid Vehicle Incorporating Electric Generator - An electric generator incorporated into a hybrid vehicle including an engine and an electric drive motor and actuated by the engine, comprises a rotor mounted to one end portion of a crankshaft of the engine such that the rotor is rotatable integrally with the crankshaft; a cylindrical accommodating member surrounding an outer periphery of the rotor; and an air outlet provided on a peripheral wall portion of the accommodating member such that the air outlet opens in the vicinity of the outer periphery of the rotor and is tilted in a forward direction of a rotational direction of the rotor and in a radially outward direction. | 07-04-2013 |
| 20150015124 | Axial gap electrical machine - An axial gap electrical machine employs unique architecture to (1) overcome critical limits in the air gap at high speeds, while maintaining high torque performance at low speeds, while synergistically providing a geometry that withstands meets critical force concentration within these machines, (2) provides arrangements for cooling said machines using either a Pelletier effect or air fins, (3) “windings” that are produced as ribbon or stampings or laminates, that may be in some cases be arranged to optimize conductor and magnetic core density within the machine. Arrangements are also proposed for mounting the machines as wheels of a vehicle, to provide ease of removing and installing said motor. | 01-15-2015 |
| 20150028727 | ROTARY ELECTRIC MACHINE - In a rotary electric machine, first inclined surfaces that intersect a plane that includes a central axis of a shaft at a predetermined angle are disposed radially outside gaps between coil ends of circumferentially adjacent concentrated winding coils, and cooling air that is blown out from a cooling fan and has flowed radially outward through the gaps between the coil ends is converted into an axially outward flow by the first inclined surfaces. | 01-29-2015 |
| 20150028728 | MODULAR COOLING ARRANGEMENT FOR ELECTRIC MACHINE - A cooling arrangement for electric machines where cooling plates are maintained against the inner surface of the stator and are interconnected by a cooling tube that carries the stator generated heat outside of the machine. | 01-29-2015 |
| 20150076968 | ELECTRIC MACHINE ROTOR WITH ROTOR VENT AND AXIAL SLOT FLUID COMMUNICATION - A rotor of an electric machine is provided and includes first and second core elements formed to define annular arrays of axial slots and rotor bar openings, each axial slot being fluidly communicative with a corresponding one of the rotor bar openings and a spacer element interposed between the first and second core elements to define a rotor vent opening fluidly communicative with the axial slots. | 03-19-2015 |
| 20150076969 | ELECTRIC MACHINE STATOR WITH AXIAL VENTS - A stator of an electric machine is provided and includes laminations arranged to form a core packet. Each lamination is formed to define an annular array of teeth at an inner radial portion thereof and an annular array of annular sectors at an outer radial portion thereof. | 03-19-2015 |
| 20150145382 | ELECTRONIC HOUSING FOR AN ELECTRIC MOTOR WITH PROTECTION AGAINST ACCIDENTAL CONTACT - The present invention concerns an electronic housing for an electric motor, consisting of a housing holder part with a housing floor and a housing wall comprising the housing floor. A housing opening lies opposite the housing floor. Arranged in the housing holder part is a motor electronic component with an electronic printed circuit board, which is arranged parallel to the opening plane of the housing opening. Detachably arranged on the electronic printed circuit board or on the motor electronic component, on a side of the electronic printed circuit board facing away from the housing floor is a contact protecting component, which covers this surface, from an electrically insulating material, which has at least partially a grid structure as an air outlet. | 05-28-2015 |
| 20160056690 | ROTATING ELECTRIC MACHINE - The rotating electric machine includes a housing, a pair of bearings that is fixed by the housing, a shaft supported at opposite ends thereof by the respective bearings, a rotor mounted on the shaft for rotation therewith, and a stator disposed in such a manner as to surround the rotor. A rotational speed detection gear is mounted on the shaft for rotation therewith at a position between the rotor and one of the bearings and in a vicinity of the bearing, and the rotational speed detection gear has a plurality of gear teeth at an outer circumference thereof. A rotational speed detector is provided at a position in the housing so as to face the gear teeth of the rotational speed detection gear. A rotating member for generating a flow of air is disposed in the housing. | 02-25-2016 |
