Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 8174156 | Rotating electrical machine with different lamination steel kinds and spacing 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 p... | 05/08/2012 |
| 8164225 | Multiple pass axial cooled generator A generator includes a housing and a stator arranged within the housing. The stator includes a first end that extends to a second end, and a plurality of axial flow passages extending between the first and second ends. The generator also includes at least one air fl... | 04/24/2012 |
| 8063521 | Electric machine with centrifugal impeller An electrical machine having a centrifugal compressor for producing a fluid flow to cool one or more portions thereof. In one embodiment, the fluid is separated into separate flows, each of the flows flowing through only a portion of an annular gap formed between a ... | 11/22/2011 |
| 8035261 | Method and device for cooling an electric machine In a slowly-running electric machine, such as a bulb turbine generator, air circulation for cooling is supplied by externally driven fans. A cooling device is mounted on the pressure or the suction side of the fan and the rotor and the stator are mounted on the suct... | 10/11/2011 |
| 8013484 | Cooling apparatus A cooling apparatus is for dissipating heat from an electronic device. The cooling apparatus includes a casing, an impeller, and a motor. The casing is for absorbing the heat and allowing coolant to flow therein. The impeller is received in the casing. The motor is ... | 09/06/2011 |
| 7939977 | Rotary electrical device having particular coil support structure A rotor for a rotary electrical device to be arranged to face to a stator, comprises a rotor iron core extending axially and including a plurality of slots arranged with a predetermined circumferential interval, a rotor coil contained by the slots, a coil support me... | 05/10/2011 |
| 7880347 | Airflow cooling pattern for belt-driven vehicle electrical power generator A belt-driven electric machine for a vehicle includes a front housing including at least one front housing opening and a rear housing including at least one rear housing opening. The electric machine further includes at least one fan capable of urging cooling air in... | 02/01/2011 |
| 7863783 | Brushless type of vehicular AC generator A brushless alternating current generator for vehicles comprises a stator, rotor, field winding, rectifier, housing, cover, and extension member. The rectifier has plural rectifying elements to rectify a voltage from the stator winding and output the rectified volta... | 01/04/2011 |
| 7825552 | Cooling arrangement for a variable reluctance electric machine A variable reluctance electric machine comprising a rotor and a stator; the stator having two or more electromagnetic windings and the rotor having a plurality of salient poles, the salient poles defining axially extending cooling fluid channels; wherein the salient... | 11/02/2010 |
| 7816825 | Heat transfer enhancement of ventilation chimneys for dynamoelectric machine rotors A cooling gas ventilation chimney is provided for enhancing the heat transfer of an end region of a dynamoelectric machine. The dynamoelectric machine includes a rotor having a plurality of radial slots. A plurality of coils are seated in the radial slots, and the c... | 10/19/2010 |
| 7808136 | Cooling device for an electrical machine, electrical machines having a cooling device such as this, core laminate and production method for such electrical machines The invention relates to a cooling device for an electric machine, in particular, for an electric motor comprising a stator (2) and a rotor. According to the invention, axial channeled recesses (6) are provided on the outside of the stators (2),... | 10/05/2010 |
| 7808135 | Generator having a cooling flow bifurcation member and method for controlling a cooling flow A cooling flow bifurcation member is positioned in an outside radial flow passage of a generator between an end portion of a stator core and a stator flange. The flow bifurcation member includes a main body portion having a tapered surface that transforms a first fl... | 10/05/2010 |
| 7777374 | Electrical appliance The invention relates to an electric appliance (1) which comprises a machine module (2) provided with an electric machine (3) comprising a stator (4) and a rotor. A machine housing (7) of the machine module (2) receives the ... | 08/17/2010 |
| 7741740 | Gas-cooled electrical device The invention relates to a gas-cooled electrical device (13), especially a gas-cooled generator, which comprises at least a rotor (1), a stator (2) and also a stator casing (3) which encloses this stator, and an end-winding space (5 | 06/22/2010 |
| 7732953 | Electric motor cooling An electric motor cooling system is provided that includes a housing and first and second cooling sources that are different from one another respectively to provide first and second cooling flows. A stator is mounted in the housing and receives the first cooling fl... | 06/08/2010 |
| 7728468 | Laminations with integrated spacing feature for an electric machine, and method of making a lamination A lamination has at least one spacing strip which is formed by cutting out sheet-metal pieces from a metal sheet in order to define an inner boundary and an outer boundary of the lamination. A cut line is made in the metal sheet to define a contour for a spacing str... | 06/01/2010 |
| 7705495 | Cooling system for an electric motor The present invention provides a stator assembly for an electromechanical hybrid transmission. The stator assembly is generally annular and defines a centrally located rotor aperture configured to accommodate a rotor. The stator assembly includes a stator core havin... | 04/27/2010 |
| 7663273 | Motor control apparatus, power steering apparatus and brake control apparatus A motor control apparatus includes a motor, and a control system board supporting a control circuit to control the motor. The apparatus may further include a power system board supporting a power supply circuit to supply power to the motor. The control system board ... | 02/16/2010 |
| 7417341 | Powder coating for generator stator bar end fitting and method for applying the powder coating A method of sealing a generator stator bar and a stator bar end fitting receiving the end including the steps of: brazing the fitting to the end of the stator bar with a braze material; applying a powder coating material to the end of the stator bar in the fitting; ... | 08/26/2008 |
| 7402924 | Cooling assembly for electric machine A cooling assembly including a generally cylindrical body to be inserted inside the generally cylindrical internal stator of an electric machine is described herein. The body includes a cylindrical external contact surface configured and sized to contact the interna... | 07/22/2008 |
| 7400070 | Rotating electric machine for vehicles A rotating electric machine for vehicles is capable of improving a cooling performance of switching elements forming an inverter module, and small-sizing the entire rotating electric machine. The rotating electric machine includes: a stator; a rotor, a cooling fan; ... | 07/15/2008 |
| 7394175 | Integral motor and air bearing cooling path A motor is provided including a housing having single and integral motor and bearing cooling inlets. The motor is arranged within the housing and includes a stator and a rotor assembly supported on air bearings. The cooling inlet is in fluid communication with the m... | 07/01/2008 |
| 7365471 | Internal cooling fan with a non-repeating blade configuration An internal cooling fan assembly for use with a claw-pole segment of a rotor assembly is provided that maximizes air flow while providing a reduced sound signature. The fan assembly includes a base portion that contacts the claw-pole segment when the fan assembly is... | 04/29/2008 |
| 7358642 | Dynamoelectric rotor A field coil is housed inside a coil housing space of a pole core, and an annular body that is made of an insulating resin is fixed to a portion of a shaft that projects outward at a first end of the pole core. A pair of slip rings are fixed to the annular body so a... | 04/15/2008 |
| 7355308 | Mover combination with two circulation flows A circulation system (330) for a mover (328) includes a fluid source (360) that directs a first fluid (356) into a first inlet (364A) of the mover (328) and a second fluid (358) into a second inlet (366A) of th... | 04/08/2008 |
| 7353913 | Elevator hoisting machine and motor A elevator hoisting machine is provided with a stator mounting portion at which a stator core of a motor is mounted to a surface of a side opposite to a sheave in a sheave rotation centerline direction of the hoisting machine. A hat shape fixed frame member in which... | 04/08/2008 |
| 7348697 | System for ventilating a motor Certain exemplary embodiments comprise a system comprising: a motor stator comprising: a motor frame comprising a core shell adapted to surround a stator core comprising: a plurality of panels; a plurality of apertures located in one or more of said panels; and a fi... | 03/25/2008 |
| 7348700 | Automotive alternator having water shield for protecting brushes from water damage An automotive alternator according to the present invention includes a rotary shaft, slip rings, a brush holder, brushes, a cover, a seal member, a cooling air flow path, and a water shield. The slip rings are fixed to an end portion of the rotary shaft. The brushes... | 03/25/2008 |
| 7345385 | Method for ventilating a motor Certain exemplary embodiments comprise a system comprising: a motor stator comprising: a motor frame comprising a core shell adapted to surround a stator core comprising: a plurality of panels; a plurality of apertures located in one or more of said panels; and a fi... | 03/18/2008 |
| 7342333 | Outer rotor type multipolar generator An outer rotor type multi-pole generator includes a stator mounted on a stationary support, and a rotor formed by fixedly attaching a magnet to the inner periphery of a bottomed cylindrical rotor yoke that is coaxially fixed to an end of a drive shaft rotatably supp... | 03/11/2008 |
| 7342332 | Air bearing and motor cooling A motor includes a housing including separate motor and bearing cooling inlets. A motor is arranged within the housing and includes a stator and rotor assembly that is supported on air bearings. The motor cooling inlet is in fluid communication with the stator, and ... | 03/11/2008 |
| 7332837 | Cooling and handling of reaction torque for an axial flux motor Methods and apparatus are provided for an axial electric motor. The apparatus comprises, a stator having coils thereon for producing a magnetic field, a rotor rotated by the magnetic field, an output shaft coupled to the rotor, and a ring incorporating a coolant cha... | 02/19/2008 |
| 7327055 | Permanent magnet generator with an integral cooling system A cooling system for a sealed permanent magnet generator is disclosed that has a rotor shaft that is hollow. Permanent magnets mount on the exterior of the hollow rotor shaft. The rotor shaft has a pressed aluminum tube in various configuration on the inside bore wi... | 02/05/2008 |
| 7318553 | Apparatus and method for heating fluids An apparatus for heating a liquid includes a housing having an internal chamber and a rotor disposed in the chamber. The rotor is preferably cylindrical and operates inside a bore provided by the housing without touching, the shape of the bore preferably being paral... | 01/15/2008 |
| 7315099 | Cooled electric drive unit for a motor vehicle An electric drive unit for a motor vehicle, comprising: (a) a stub axle; (b) an electric motor having a stator that is fixed with respect to the stub axle and having a rotor that is rotatably supported with respect to the stub axle; ... | 01/01/2008 |
| 7312550 | Architecture for electric machine In one aspect, an alternator is described which includes a current control apparatus including a stator winding and a control winding, wherein current control in the control winding regulates the stator winding. In another aspect, a gas turbine engine includes a mul... | 12/25/2007 |
| 7312544 | Fluid transfer device and method for conveying fluid to a rotating member A fluid transfer device and a method for conveying a fluid from a fluid transfer device to a rotating member are provided. The fluid transfer device includes a housing disposed around a first rotating member extending along an axis. The housing has a first plurality... | 12/25/2007 |
| 7294943 | Electric rotating machine An electric rotating machine capable of lowering the temperature of a rotor disposed, wherein at least one of closed ventilation loops for cooling is formed, one of the loops constituting a ventilation passage communicating with an exhaust side through a heat source... | 11/13/2007 |
| 7288923 | Voltage-limited electric machine An electric alternator having a rotor, stator and at least one winding in the stator adapted to conduct a current, the machine also having and first and second magnetic circuits around different portions of the winding which may be configured relative to one another... | 10/30/2007 |
| 7285042 | Electronic apparatus case having ventilation system A case having a ventilation system for ventilating a heat generation source disposed in the case, includes: a first sub-case and a second sub-case which is joined to the first sub-case; a first gap provided in a surface of a joining section between the first sub-cas... | 10/23/2007 |
