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| Number | Title | Issue Date |
| 7859146 | 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. ... | 12/28/2010 |
| 7545062 | Devices and systems for cooling insulated, strip-laminated structures by convection A device and system for removing heat from a magnetic device such as an electromagnet core section of a magnetic bearing internally by convection. The device includes a ribbon-type conductor portion and an insulator portion that are spirally and coaxially arranged o... | 06/09/2009 |
| 7439646 | High power generator with enhanced stator heat removal A high speed, high power generator has its main stator configured with one or more reduced-diameter sections. The generator includes a generator housing, a main rotor, and a main stator. The generator housing has a main stator cooling flow passage formed therein tha... | 10/21/2008 |
| 7247959 | Dynamoelectric machine with arcuate heat exchanger and related methods A dynamoelectric machine 30 includes a rotor 32 and a stator 34 surrounding the rotor. The dynamoelectric machine 30 further includes a generator housing 36 surrounding both the rotor 32 and the stator 34. Additionall... | 07/24/2007 |
| 7211922 | Rotor for rotating electric machine The present invention provides a dynamoelectric rotor enabling electromagnetic noise to be reduced by linking a facing tip end portion and root end portion of adjacent claw-shaped magnetic poles by a linking member and placing a field winding in contact with an inne... | 05/01/2007 |
| 7163239 | Actuator assembly An actuator assembly includes an actuator drivingly connected to a gear wheel. The gear wheel includes an abutment secured rotationally fast having a camming surface and operable to drive an output member. The actuator assembly is operable to apply a force in a firs... | 01/16/2007 |
| 7145280 | Stator for a dynamoelectric machine having a split ferromagnetic core A method and apparatus for production of stator windings for dynamoelectric mechines of different configurations is provided. The windings are preferably formed on a bobbin (10) or similar article, which may then be transferred onto an appropriate carrier suc... | 12/05/2006 |
| 6992411 | Liquid cooling arrangement for electric machines A cooling arrangement for electric machines comprising a heat storing element provided with generally C-shaped channels and a cooling tube so configured and sized as to be insertable in said C-shaped channels of said heat storing element is described herein. The coo... | 01/31/2006 |
| 6989617 | Command component assembly for alternator to automatic vehicle A brush holder for a vehicle electrical machine having an insulating support, an electrical circuit including a semiconductor control component; and at least one metallic heat dissipation member in contact with the ambient environment and arranged to receive heat fr... | 01/24/2006 |
| 6967425 | Multi-functional electric stepper motor assembly having increased motor torque An electric stepper motor having increased motor torque includes a thru-hole, a rotor and a stator. The thru-hole allows use with a chamber and provides transport of hardware and elements into the chamber. A first and second pair of rotor cups separated by a non-mag... | 11/22/2005 |
| 6958562 | Motor stator and heat sink system A plurality of similarly configured plates have an essentially circular exterior peripheral ring and an essentially circular interior opening with a plurality of radial legs extending inwardly from the ring with an exterior diameter. A plurality of similarly configu... | 10/25/2005 |
| 6952070 | Capped flat end windings in an electrical machine End windings of the field windings of a generator rotor body are flattened. A cap having a flat undersurface overlies the flattened end windings and an enclosure ring extends about the end windings and cap. Apertures are formed through the cap in communication with ... | 10/04/2005 |
| 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 |
| 6825585 | End plate An end plate (1, 11) for a stator (31) wound with a cable in a rotating electric machine, the plate (1, 11) being provided with axially running winding slots (2) corresponding to the stator (31) and axially running apertures (19... | 11/30/2004 |
| 6815848 | Air cooled electrical machine An electrical machine has a stator, a rotor, and radially extending coolant passageways provided in a laminated core section of at least the stator. The coolant passageways are defined between axially spaced stacks of laminations in the laminated core section. The r... | 11/09/2004 |
| 6798097 | Stator cooling The present invention relates to an electrical machine and more particularly to an arrangement of cooling passages within the stators of such machines. Cooling fluid is caused to pass through a number of channels provided in a space between winding discs to provide ... | 09/28/2004 |
| 6777835 | Electrical power cooling technique The apparatus for cooling a high power electrical transformer and electrical motors uses thermally conductive material interleaved between the turn layers of a high power transformer and iron core laminates to provide a low resistant thermal path to ambient. The str... | 08/17/2004 |
| 6777836 | Heat transfer enhancement at generator stator core space blocks A ventilation pathway for a cooling gas to flow extends on a radial axis in a generator stator core. The ventilation pathway comprises at least two magnetic laminations and a plurality of space blocks extending radially in the generator stator core. The space blocks... | 08/17/2004 |
| 6720687 | Wake reduction structure for enhancing cavity flow in generator rotor endwindings A gas cooled dynamoelectric machine is provided that is comprised of a rotor, a rotor winding comprising axially extending coils and concentric endwindings, and a plurality of spaceblocks located between adjacent endwindings thereby to define a plurality of cavities... | 04/13/2004 |
| 6713934 | Generator for an outboard motor An engine includes an engine body and a generator. The engine body has a stator bracket mounted to the cylinder block. The generator incorporates a rotor flywheel and an armature assembly consisting of armature legs. Various metal plates with high magnetic permeabil... | 03/30/2004 |
| 6633097 | Mechanical joining for water-cooled motor frame A stator frame for an electric motor including a substantially cylindrical shaped body section having opposed ends, a cooling passageway extending through at least a portion of the body section, and at least one spacer bar. The cooling passageway includes... | 10/14/2003 |
| 6628020 | Heat transfer enhancement of ventilation grooves of rotor end windings in dynamoelectric machines A technique for enhancing heat transfer ventilation grooves is provided which allows the cooling groove dimensions to be minimizes while satisfying endwinding cooling requirements. Groove dimension may be minimized by including surface manifestations and/... | 09/30/2003 |
| 6617749 | Re-entrant spaceblock configuration for enhancing cavity flow in rotor endwinding of electric power generator A gas cooled dynamoelectric machine is provided that is comprised of a rotor, a rotor winding comprising axially extending coils and concentric endwindings, and a plurality of spaceblocks located between adjacent endwindings thereby to define a plurality ... | 09/09/2003 |
| 6583526 | Generator stator core vent duct spacer posts Generator stator cores are constructed by stacking many layers of magnetic laminations. Ventilation ducts may be inserted between these layers by inserting spacers into the core stack. The ventilation ducts allow for the passage of cooling gas through the... | 06/24/2003 |
| 6577027 | Electrical equipment winding structure providing improved cooling fluid flow A winding structure of induction electric apparatus cooling disc windings within a cooling block evenly. With respect to a pair of cooling blocks including a cooling block A disposed upstream of axial insulating cylinder cooling flow of a blocking plate b... | 06/10/2003 |
| 6525938 | Circuit board fixing structure of heatsink fan A circuit board fixing structure of a heatsink fan includes a housing having a pivot portion having a periphery provided with multiple poles. The housing is provided with a pair of positioning seats and a conducting wire receiving socket. The two position... | 02/25/2003 |
| 6525437 | Rotating electrical machine stator A stator of a rotating electrical machine has improved heat dissipation of a stator and end portions of a stator winding thereof which are protected from damage due to stress concentration, by inserting a silicone rubber sheet between a stator core having... | 02/25/2003 |
| 6498408 | Heat transfer enhancement at generator stator core space blocks A ventilation pathway for a cooling gas to flow extends on a radial axis in a generator stator core. The ventilation pathway comprises at least two magnetic laminations and a plurality of space blocks extending radially in the generator stator core. The s... | 12/24/2002 |
| 6495943 | Spaceblock scoops for enhanced rotor cavity heat transfer A gas cooled dynamoelectric machine is provided that is comprised of a rotor, a rotor winding comprising axially extending coils and concentric endwindings, and a plurality of spaceblocks located between adjacent endwindings thereby to define a plurality ... | 12/17/2002 |
| 6465917 | Spaceblock deflector for increased electric generator endwinding cooling A gas cooled dynamoelectric machine is provided that is comprised of a rotor, a rotor winding comprising axially extending coils and concentric endwindings, and a plurality of spaceblocks located between adjacent endwindings thereby to define a plurality ... | 10/15/2002 |
| 6441527 | A.C. generator for vehicle Coil ends (19) of a stator coil (18) having a cross sectional shape like a flat rectangular are constructed by first portions extending from an outer layer of a pair of slots apart from predetermined pitches in an axial direction and slanting in a circumf... | 08/27/2002 |
| 6392326 | Flow-through spaceblocks with deflectors and method for increased electric generator endwinding cooling A gas cooled dynamoelectric machine is provided that includes a rotor having a body portion, axially extending coils, endwindings, and a plurality of spaceblocks disposed between the endwindings, so that a plurality of cavities are defined between mutuall... | 05/21/2002 |
| 6297571 | Electrical machine with a stator, and a claw pole rotor system composed of two pole wheel halves An electrical machine formed as a fluid-cooled three-phase alternating current generator has a cup-shaped housing, a stator arranged in the housing, a drive system, a shaft driven by the drive system, a claw pole rotor system mounted on the shaft, the cla... | 10/02/2001 |
| 6278217 | High voltage generator stator with radially inserted cable windings and assembly method A stator for a high voltage generator has cable windings that are radially inserted into the stator slots. The stator is assembled as the cable windings are laid into the stator slots. The stator slots are left wide open to allow the cable windings and se... | 08/21/2001 |
| 6271608 | Alternating current machines An AC generator comprises a rotor 25 within a stator 24. The rotor carries a fan 27 at one end of the stator. The fan 27 is within a casing 30 which forms volume discharge passages 32. The fan 27 has blades 31 which project from the hub 28 at an angle whi... | 08/07/2001 |
| 6262503 | Method and apparatus for cooling current carrying coil A method and apparatus are provided for cooling a current carrying coil and a specialized coil is provided for use in such method and apparatus. The coil has openings formed therein between at least selected internal wires of the coil in at least one non-... | 07/17/2001 |
| 6232683 | Alternator with cooling air guide formed by bearing housing having guiding portion In an automotive alternator, a thick-walled guide portion for guiding external air from an opening towards a heat sink main body is formed opposite fins on part of an outer circumferential portion of a bearing housing portion of a rear bracket.... | 05/15/2001 |
| 6223740 | Fuel-fired furnace with self-cooling draft inducer fan A gas-fired forced draft air heating furnace is provided with a specially designed self-cooling draft inducer fan that overlies an inshot-type burner section of the furnace and is operatively supported on a heat exchanger plenum portion of the furnace hou... | 05/01/2001 |
| 6194807 | Mechanical constraint for tapered end turns of a generator rotor An end turn arrangement for turns in a rotor where individual windings are stacked in tapered radial slots in the rotor, with successive turns having a smaller width in a radial inward direction, the end turns of the individual turns of each stack being v... | 02/27/2001 |
| 6188153 | Segmented stator end turn air deflector for force ventilated AC motor A segmented stator end turn air deflector for an electric motor having a stator and a rotor. The stator has a plurality of stator coils with end turns and a plurality of air passages extending longitudinally through the stator. A frame having an inlet end... | 02/13/2001 |
