| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 310261100 | Miscellaneous rotor structure | 23 |
| 20090278419 | METHODS FOR PRODUCING EVEN WALL DOWN-HOLE POWER SECTIONS - Embodiments of the present invention provide methods for manufacturing an even-wall rotor or stator that do not suffer from drawbacks of the prior art. Even-wall rotors or stators produced according to those methods are also provided. In one embodiment, a method for manufacturing a rotor or stator for use in a mud motor is provided. The method includes providing a vacuum chamber; providing a metal electrode at least partially disposed in the vacuum chamber; providing a mold disposed in the vacuum chamber; and melting a portion of the electrode with a direct current arc, the molten metal flowing into the mold ring. | 11-12-2009 |
| 20100013350 | ROTOR AND ROTATING ELECTRIC MACHINE WITH THE ROTOR - A motor includes: a rotating shaft having a key groove formed in the peripheral surface of the rotating shaft; a rotor core having a through hole in which the rotating shaft can be received and a key portion formed on the inner surface of the rotor core defining the through hole, the key portion being fittable in the key groove; and a stress relaxation groove formed at a position adjacent to the key portion in the inner surface of the rotor core defining the through hole, and depressed away from the peripheral surface of the rotating shaft. The inner surface of the through hole is arc-shaped. A bottom surface of the stress relaxation groove, located radially outward in the inner surface of the stress relaxation groove, includes an arc portion centered at the center defining the through hole. | 01-21-2010 |
| 20100295411 | METHODS AND APPARATUS FOR A CONTINUOUS WOUND LAMINATE ROTOR FLUX PATH - A rotor assembly is assembled by providing an elongated rectangular strip of material having a first edge and a second edge defining a width, cutting the elongated rectangular strip to form a first patterned strip having a first side corresponding to the first edge, winding the first patterned strip portion around the perimeter of the rotor core such that the first edge is adjacent to the perimeter and the patterned strip portion forms a continuous laminated ring structure. Two laminated ring structures can be cut from a single strip, thereby reducing waste material and forming a strong structure. | 11-25-2010 |
| 20110062819 | Rotor Design for an Electric Motor - A rotor assembly and a method for fabricating the same are provided in which a solid rotor ring is formed at either end of a stack of laminated discs, the solid rotor rings yielding improved electrical and mechanical characteristics in a low weight assembly. The solid rotor rings are fabricated by brazing slugs between the end portions of the rotor bars, the braze joints contacting a large percentage (at least 90%) of the rotor bar end portions. | 03-17-2011 |
| 20110095644 | ELECTRICAL GENERATOR AND ELECTRICITY GENERATION SYSTEM - The present invention relates to an electrical generator ( | 04-28-2011 |
| 20110156527 | Motor - There is provided a motor. A motor according to an aspect of the invention may include: a rotor case having a coupling hook extending downward in an axial direction, secured to a shaft, and performing rotation; a sleeve supporting the shaft; and a sleeve housing having a projection provided at a front end portion of an upper part thereof in the axial direction and a spiral passage provided along the projection such that the coupling hook moves along the spiral passage while the sleeve is pressed and inserted into an inner circumferential surface thereof. | 06-30-2011 |
| 20110260575 | ROTOR MADE OF MAGNETIC MATERIAL - The invention relates to a rotor including a magnetic material. At least one surface section of the magnetic material is provided with a wear-resistant coating. | 10-27-2011 |
| 20120146450 | ELECTRICAL MACHINE WITH A RESTRAINT SYSTEM FOR A ROTOR WINDING HEAD - An electrical machine configured to operate in a power range of several MVA includes a rotor configured to rotate about an axis. The rotor includes a rotor winding disposed in a rotor lamination stack and having an exposed winding head outside of the rotor lamination stack. The winding head includes a winding head retention system having a plurality of radially oriented retention elements each including a locking device configured to secure a respective one of the retention elements against at least one of an unintentional loosening and a flying away in an event of a breakage. | 06-14-2012 |
| 20120161572 | ELECTROMAGNETICALLY-COUNTERED ACTUATOR SYSTEMS AND METHODS - Various electric motor systems are provided to minimize irradiation of harmful (or first) electromagnetic waves. More particularly, an electric motor system is provided with one or more counter units which minimize irradiation of such harmful (or first) waves by suppressing such waves to (or toward) their sources and/or by emitting counter (or second) electromagnetic waves capable of canceling a desired portion of the harmful (or first) waves. Such counter units may then be incorporated into various locations for opposing magnetic poles of basic rotor units and/or basic stator units of the system. Various methods are also provided to minimize irradiation of such harmful (or first) waves by suppressing the harmful (or first) waves toward their sources and/or by canceling such harmful (or first) waves with the counter (or second) waves. | 06-28-2012 |
| 20120181895 | PERMANENT MAGNET ROTOR OF MOTOR - A permanent magnet rotor of a motor including a rotor core and permanent magnets. The rotor core includes a central core, a plurality of sectional cores, and a connecting mechanism. The sectional cores are integrated with the central core via the connecting mechanism to form a whole iron core. Grooves are formed between each sectional core and the central core and the permanent magnets are embedded in the grooves. The permanent magnet rotor has a simple structure, excellent manufacturability in terms of production and assembly, low manufacturing costs, excellent electromagnetic performance, and meanwhile is robust enough to avoid potential deformation. | 07-19-2012 |
| 20120212098 | ELECTRIC MACHINE, HYDRAULICS UNIT - The invention relates to an electric machine ( | 08-23-2012 |
| 20120274175 | DISK MOTOR AND ELECTRIC POWER TOOL - A disk motor and an electric power tool in which positioning of a coil disk with respect to a commutator disk can be carried out while reliably ensuring insulating properties are provided. A disk motor having: an output shaft part; a coil disk that is provided with a coil pattern and provided coaxially to the output shaft part; a commutator disk that is provided with a commutator pattern and provided coaxially to the output shaft part; and a positioning pin that is electrically insulated from the coil disk and the commutator disk, is engaged with the output shaft part and the coil disk, and carries out positioning of the coil disk with respect to the output shaft part, and an electric power tool having the disk motor are provided. | 11-01-2012 |
| 20130099625 | SPINDLE MOTOR - Disclosed herein is a spindle motor including: a shaft forming a rotation center of the motor; a sleeve receiving the shaft therein and rotatably supporting the shaft; a thrust plate protruding in a direction vertical to an axial direction of the shaft and coupled to an upper end portion of the sleeve in the axial direction; and a stopper including a first plate covering an upper end surface of the thrust plate in the axial direction and a second plate bent from one side end of the first plate in a downward axial direction. According to a preferred embodiment of the present invention, a bent stopper is coupled to one side end of a thrust plate of the spindle motor using a fluid dynamic pressure bearing, thereby making it possible to secure a double or more storage space of oil which is an operating fluid. | 04-25-2013 |
| 20130113335 | ROTOR HOUSING FOR EASY AND SAFE ASSEMBLING AND METHOD FOR ASSEMBLING MOTOR SET USING THE ROTOR HOUSING - The present invention relates to a method for assembling a motor set that includes: coupling a rotor housing having a plurality of operating holes to a stator having shaft bushings with holes formed therein through the operating holes, thereby making the holes to be seen through the operating holes; coupling the holes of the stator associated with the rotor housing to stator assembly holes of a motor set assembly, the holes of the stator being aligned with the stator assembly holes of the motor set assembly; and inserting rivets into the holes through the operating holes and coupling the rivets to the stator assembly holes. | 05-09-2013 |
| 20130140942 | SPINDLE MOTOR - There is provided a spindle motor including: a shaft rotatably supported by a sleeve; and a rotor hub fixedly installed on an upper end portion of the shaft, wherein the shaft includes a burr generation suppression part formed at the upper end portion thereof in order to suppress burr generation in an inner peripheral surface of the rotor hub in the case in which the rotor hub is press-fitted to the shaft. | 06-06-2013 |
| 20130221797 | AMORTISSEUR ASSEMBLY AND APPARATUS TO MAINTAIN RADIAL VENTING HOLE ALIGNMENT - An amortisseur assembly comprises an end winding amortisseur. The end winding amortisseur comprises a body, at least one finger element, and a stop block. The body comprises a first edge. The finger element extends from the first edge of the body, and comprises a first surface. The stop block can attached to the first surface. The amortisseur assembly can further comprise a slot amortisseur so that the stop block abuts an end of the slot amortisseur. The amortisseur assembly can be assembled on a radial-flow cooled rotor. A method of forming an amortisseur assembly for a rotor comprises providing one or more slot amortisseurs and one or more of the end winding amortisseurs. The slot amortisseurs can be provided by shortening existing slot amortisseurs. The slot springs can replace existing slot springs, and the one or more slot springs can be longer than the existing slot springs. | 08-29-2013 |
| 20130293061 | Non-Sliding Carrier Bearing in Submersible Pump Motor and Method of Installation - A submersible well pump motor has features to prevent the carrier bearing from sliding axially along the stator due to thermal growth of the rotor. The rotor has a shaft and rotor sections spaced apart from each other. Carrier bearings are located between the rotor sections, each having an anti-rotation member that frictionally engages the inner diameter of the stator to prevent spinning of the carrier bearing. A deflectable thrust washer may be located between ends of the carrier bearing and the rotor sections. The thrust washer reduces in thickness in response to an axial thermal growth force due to axial thermal growth movement of the rotor sections and shaft. The thermal growth force is less than an amount of dislodging force required to cause the anti-rotation member to axially move relative to the stator. Rather than deflectable thrust washers, sacrificial thrust washers that dissolve prior to normal operation may be used. | 11-07-2013 |
| 20140028149 | STRUCTURE FOR AN ELECTROMAGNETIC MACHINE HAVING COMPRESSION AND TENSION MEMBERS - A structure of an electromagnetic machine includes an outer support member configured to support a conductive winding or a magnet. The structure further includes an inner support member, a first elongate compression member, a second elongate compression member, and an elongate tension member. The first elongate compression member and the second elongate compression member each include a first end portion coupled to the outer support member and a second end portion coupled to the inner support member to resist radial and axial deflection of the outer support member relative inner support member. The elongate tension member includes a first end portion coupled to the first compression member and a second end portion coupled to one of the inner support or the second elongate compression member to resist rotational deflection of the outer support member relative to the inner support member. | 01-30-2014 |
| 20140042868 | DEVICES AND METHODS FOR MAGNETIC POLE AND BACK IRON RETENTION IN ELECTROMAGNETIC MACHINES - In some embodiments, an electromagnetic machine includes a rotor element configured for movement relative to a stator. The rotor element includes a support member, a backing member, and a magnetic pole assembly. The support member includes a first coupling portion. The backing member is formed, at least in part, from a ferromagnetic material and the magnetic pole assembly is configured to be coupled to the backing member. The magnetic pole assembly and/or the backing member include a second coupling portion configured to removably couple the backing member and the magnetic pole assembly collectively to the first coupling portion of the support member. | 02-13-2014 |
| 20140265718 | ROTOR CORE AND METHOD OF MANUFACTURING THE SAME - A method of manufacturing a rotor core includes a first process of punching out punched holes | 09-18-2014 |
| 20140361659 | ROTOR HOUSING FOR EASY AND SAFE ASSEMBLING - Disclosed is a rotor housing for a motor. The rotor housing has a shaft bushing in the center thereof and includes a plurality of operating holes disposed at a defined position between an outer circumference of the rotor housing and the shaft bushing. The defined position corresponds to the position of a plurality of holes formed in a stator to be coupled to the rotor housing. | 12-11-2014 |
| 20150076959 | METHOD OF PRODUCING A ROTOR OF AN ELECTRIC MACHINE AND ROTOR OF AN ELECTRIC MACHINE - The invention relates to a method of producing a rotor ( | 03-19-2015 |
| 20150311774 | METHOD FOR BALANCING A COMPONENT - The invention relates to a method for balancing a component ( | 10-29-2015 |
