Class 310/156.78 - Squirrel cage

Subclass of Class 310 - Electrical generator or motor structure
Definition: Subject matter including a squirrel cage type winding on
No. of patents: 40
Last issue date: 12/06/2011

Number	Title	Issue Date
8072111	Motor and the compressor including the same A motor, namely, a motor with minimum loss and improved efficiency is disclosed. More specifically, a motor having enhanced starting torque performance and increased normal operation efficiency is disclosed. In the motor in which a rotor is started using induction t...	12/06/2011
8067873	Motor and the compressor including the same A motor, namely, a motor with minimum loss and improved efficiency is disclosed. More specifically, a motor having enhanced starting torque performance and increased normal operation efficiency is disclosed. In the motor in which a rotor is started using induction t...	11/29/2011
7902713	Self-starting type permanent magnet synchronous motor and a compressor using the same A self-starting type permanent magnet synchronous motor comprises a stator and a rotor. The rotor comprises a rotor core having a plurality of slots provided in an outer periphery thereof and a cage winding comprising conductive bars embedded in the slots and conduc...	03/08/2011
7772736	Permanent magnet synchronous motor, rotor of the same, and compressor using the same The inventive self-initiated permanent magnet synchronous motor has a rotor that has two-pole permanent magnets, as well as magnetic substances in a peripheral direction between the magnetic poles of the permanent magnets. The present invention provides a high-effic...	08/10/2010
7619343	Rotor for an electrical motor The invention provides a rotor for an electrical motor. The rotor comprises both a squirrel cage and a number of magnets and can be inserted e.g. in a line-start motor. To secure the magnets in cavities in a core of the rotor, an end plate is attached to one axial e...	11/17/2009
7612481	Rotor with a cover plate for securing a magnet in the rotor The invention provides a rotor for an electrical motor, e.g. a line-start motor. The rotor comprises a magnet located in a cavity in a rotor core. The core is laminated from sheets of magnetically conductive material and the magnet is secured in the cavity by an end...	11/03/2009
7453181	Permanent magnet synchronous motor and compressor using the same A permanent magnet synchronous motor includes a rotor having cage windings and permanent magnets placed on an inner peripheral side of these cage winding bars, where the permanent magnets are placed and polarized so that a ratio θ/α between a circumferential pitch...	11/18/2008
7437882	Apparatus for driving a compressor and a refrigerating air conditioner An apparatus for driving a compressor comprises a compressor having a compression mechanism part for sucking a fluid to compress the same, and an electric motor for driving the compression mechanism part, and an inverter device for driving the electric motor at vari...	10/21/2008
7372183	Permanent magnet synchronous motor A synchronous motor includes a stator, a rotor and permanent magnets. The rotor includes a rotor iron core that is rotatable relative to the stator, and conductor bars accommodated within corresponding slots in the rotor iron core. The conductor bars have their oppo...	05/13/2008
7365466	Rotor for an electrical motor The invention provides a rotor for an electrical motor, a tool for making a rotor core and a method of making the rotor. The rotor could be incorporated e.g. in a line-start motor and comprises a squirrel cage and magnet located in a rotor core. The magnets are, in ...	04/29/2008
7279821	Motor A motor includes a rotor, a rotor core included in the rotor, the rotor core being configured to be embedded, therein, with at least one first magnet, a pair of end plates, one of the pair of end plates being positioned at an axial end of the motor, an other one of ...	10/09/2007
7247965	Rotor for an electric motor The invention relates to a rotor for an electric motor, especially an electric line-start motor, comprising spaces (4 to 7) which receive permanent magnets (10 to 13) and extend in an axial direction, and spaces (20 to 25) t...	07/24/2007
7183685	Rotor for an electric motor The invention relates to a rotor for an electric motor, particularly an electric line-start motor, comprising axially accommodating spaces (4 to 6) for conductor rods, and axially extending receiving spaces (10, 11) for permanent magnets (14,...	02/27/2007
7183686	Permanent magnet synchronous motor A synchronous motor includes a stator, a rotor and permanent magnets. The rotor includes a rotor iron core that is rotatable relative to the stator, and a plurality of conductor bars accommodated within corresponding slots in the rotor iron core. The conductor bars ...	02/27/2007
7161270	Line start reluctance synchronous motor A line start reluctance synchronous motor includes: a single phase stator arranged at an inner circumferential surface of a motor body and on which a main coil and a sub coil are wound; a magnet unit free-rotatably arranged along an inner circumferential surface of ...	01/09/2007
7112908	Rotor for synchronous induction motor, synchronous induction motor, fan motor, compressor, air conditioner, and refrigerator There are problems in a rotor having a slit that it is difficult to increase the number of rotations of the rotor, since the centrifugal force is received at both ends of the slit, and if the connection part is made thick to increase the number of rotations, the pro...	09/26/2006
7019427	Permanent magnet synchronous motor A synchronous motor includes a stator, a rotor and permanent magnets. The rotor includes a rotor iron core rotatable relative to the stator, and a plurality of conductor bars accommodated within corresponding slots in the rotor iron core. The conductor bars have the...	03/28/2006
7002276	Armature with coated laminate bundle An armature of the prior art has a lamination packet which leads to a high loss of magnetic flux in the lamination, since it completely encloses the magnets that are disposed in the lamination. An armature (1) of the invention comprises at least one la...	02/21/2006
6936945	Permanent magnet synchronous motor A structure of a rotor used in a synchronous motor employing both of permanent magnets and a stator using concentrated windings is disclosed. Slits (13) provided in a section of a rotor laminated in a direction of a rotary shaft are shaped like an arc or a bo...	08/30/2005
6933647	Squirrel-cage rotor for an asynchronous induction motor The novel squirrel-cage rotor should enable a power output of the motor of more than 1 MW even at rotation speeds of more than 10,000 rpm. To this end, the conductor bars (4) of the squirrel cage are soldered into slots (8, 9) arranged on the periphery...	08/23/2005
6933653	Armature and method for producing an armature An armature according to the invention is comprised of a number of lamination modules, wherein each module has a beginning region and an end region that are each fastened to the rotor shaft so that even in the presence of very high torques, the holding force for the...	08/23/2005
6891300	Rotor of induction starting synchronous motor A rotor of an induction starting synchronous motor includes permanent magnets and induction coils having both ends short-circuited in a core. The permanent magnets are arranged side by side in a longitudinal direction of the core to form a plurality of sets of perma...	05/10/2005
6891295	Flywheel magneto generator A flywheel magneto generator which comprises a rotor having a magnet attached to an outer circumferential side of a flywheel and a stator constructed by winding a generating coil around a core having a magnetic pole portion opposed to a magnetic pole of the rotor, w...	05/10/2005
6876119	Permanent magnet synchronous motor A synchronous motor includes a stator, a rotor and permanent magnets. The rotor includes a rotor iron core and rotatable relative to the stator, a plurality of conductor bars accommodated within corresponding slots in the rotor iron core. The conductor bars have the...	04/05/2005
6727624	Embedded permanent magnet type induction motor which allows coil embedding work to be easily performed An embedded permanent magnet type induction motor has a rotor that is a lamination of a plurality of rotor core plates (10). The rotor core plate is provided with a plurality of rotor slots (12) each inclined by an angle α with respect to a radial dir...	04/27/2004
6707216	Single phase line start permanent magnet synchronous motor A single phase line start permanent magnet synchronous motor is started by an interaction between magnetic fields of the coil and of the secondary conductor, and an normal operation can be performed using only the permanent magnet and the operating condenser of smal...	03/16/2004
6700270	Synchronous induction motor A synchronous induction motor realizing a great reluctance torque by concentrating a magnetomotive force generated by a rotor provided with a permanent magnet having a two-pole structure, and having a high efficiency. The synchronous induction motor has a...	03/02/2004
6552462	Reluctance type rotating machine with permanent magnets A reluctance type rotating machine includes a stator 1 having armature windings 2 arranged on an inner periphery of the stator 1, a rotor 3 having a magnetic unevenness in the circumferential direction and a plurality of permanent magnets 6 arranged for n...	04/22/2003
6268677	Rotor for permanent magnet type rotating machine A rotor is provided for a permanent magnet type rotating machine having a stator 1 with armature windings 11. The rotor 3 includes a rotor core 31 and a plurality of permanent magnets 32 arranged in the rotor core 31 so as to negate magnetic flux of the a...	07/31/2001
5159220	Realizations of folded magnet AC motors A rotor assembly for an internal permanent magnet rotor comprises a plurality of interior laminations stacked to form a substantially continuous internal core and a plurality of external laminations stacked to form a substantially continuous external core...	10/27/1992
5144180	Two-stator induction synchronous motor A two-stator induction synchronous motor includes a unitary rotor having a first rotor assembly and a second rotor assembly each of which is formed by a permanent magnet and a rotor core. The first rotor assembly and the second rotor assembly respectively...	09/01/1992
4806717	Drive for a laundry machine A drive for a laundry machine has an electronically commutated motor and a driving device arranged in mounting relation, and the driving means has means adapted for conjoint rotation with a rotatable assembly of the electronically commutated motor. Means ...	02/21/1989
4745318	Induction motor with secondary rotor An induction motor having a stator with a stator winding, and a rotor coupled with a shaft 10 and separated from the stator by an air gap 13, wherein the rotor includes a current conducting element 5,15 and a magnetically excitable member 4, and in the ai...	05/17/1988
4556809	Combination synchronous and asynchronous electric motor Three rotors disposed in axial succession on a common shaft are mounted to cooperate with a common stator having an annular laminated core coaxial with the shaft on which a three-phase stator winding is wound. The rotors are of two kinds, the middle one b...	12/03/1985
4506181	Permanent magnet rotor with complete amortisseur A rotor for a permanent magnet machine comprises laminated pole pieces held in position by interpolar nonmagnetic clamp pieces bolted to a solid rotor core having central portions with a polygonal cross section. Magnets are situated between the pole piece...	03/19/1985
4472651	Permanent magnet rotor A rotor for a permanent magnet machine comprises an even plurality of pole pieces joined together by intermediate nonmagnetic segments to form a hollow cylinder. A plurality of magnets is situated adjacent to the interior portion of the pole pieces, with ...	09/18/1984
4469970	Rotor for permanent magnet excited synchronous motor A permanent magnet rotor is made of a lamination stack having parts formed of a material of high permeability surrounding a shaft and extending radially outward with respect to the shaft, separated by interpolar regions of low magnetic permeability. A plu...	09/04/1984
4434546	Method of making a core A method of making a core adapted to be used in a dynamoelectric machine. The core has a plurality of slots extending therethrough defining a plurality of first pole sections interposed between adjacent ones of a plurality of integrally interconnected sec...	03/06/1984
4188554	Alternating current rotating electric machine An alternating current rotating electric machine having a permanent magnet rotor comprising a generally cylindrical body of magnetic material having a plurality of regularly spaced, inwardly extending slots formed around its circumference so as to define ...	02/12/1980
3931535	Constant frequency motor generator set with only one rotor A single rotor, motor-generator set with motor and generator stators and one rotor turning adjacent the two stators. Preferably, the rotor is between the two stators. The rotor has a first rotor periphery facing the motor stator periphery and a second rot...	01/06/1976

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Class 310/156.78 - Squirrel cage