| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 310216129 | Secured by axially extending bar | 12 |
| 20090195116 | MOTOR STATOR STRUCTURE - The present invention discloses an improved motor stator structure, which comprises: a plurality of silicon steel plates, two rotor bearing blocks, and a plurality of pins. In the present invention, the pins are forced to pass through the through-holes of the silicon steel plates and then inserted into the buried holes to make the end faces of the pins closely contact the motor rotor bearing blocks. Thereby, the silicon steel plates and the rotor bearing blocks are concentrically assembled together. As all the pins has an identical length and closely contact the rotor bearing blocks, the rotor bearing blocks are parallel to each other and vertical to the stacking direction of the silicon steel plates. Thus, the present invention is an easy-to-fabricate motor stator structure, which has a considerable precision and a lower fabrication cost. | 08-06-2009 |
| 20090195117 | ELECTRIC SUBMERSIBLE PUMP (ESP) HAVING A MOTOR WITH MECHANICALLY LOCKED STATOR LAMINATIONS - A submersible pumping system for use downhole, wherein the system includes a pump and a pump motor for driving the pump. The pump motor includes a housing with corresponding stator and rotor lamination stacks disposed within the housing. Also included with the pump motor is an anchoring system for axially securing the stator lamination stack within the motor housing. | 08-06-2009 |
| 20100244618 | STATOR FOR ELECTRIC ROTATING MACHINE - A stator for an electric rotating machine has iron core fastening members on the outer circumferential surface of a stator iron core, spaced apart from one another in a circumferential direction and fastened to the iron core in an axial direction. Holding rings on the outer circumferential surface of the iron core, spaced apart from one another in the axial direction, press the iron core toward a center portion thereof via the iron core fastening members. Ring-shaped inner frame members protrude from the inner surface of a frame that encloses the iron core, and are spaced apart from one another in the axial direction. Elastic supporting members are fixed to the inner circumferential surfaces of the inner frame members that are adjacent to one another, and are fixed to the outer circumferential surfaces of the holding rings at the middle in the axial direction, or vice versa. | 09-30-2010 |
| 20100244619 | MULTI-PARTS ASSEMBLED THROUGH BOLTS OF STATOR CORE - A through bolt is provided for a magnetic core of a generator stator, which is insertable in a bore provided in the stator core lamination for maintaining the tightness of the core components. The through bolt includes at least two longitudinal through bolt elements which are interconnected via at least one connecting element. Further, a method for assembling a separable through bolt for a magnetic core lamination of a generator stator is described. Thus the drawbacks of the prior art are avoided and an improved solution for replacement of the through bolts located under the level of the floor foundation is provided. Further, no special tooling or lifting of the frame are required which makes such replacement easy and cost efficient. | 09-30-2010 |
| 20110121680 | STATOR CORE SUSPENSION AND RELATED SPRING BAR - A stator core suspension includes a frame for supporting a stator core; a keybar coupled to a stator core section of the stator core; and a spring bar coupled to the frame and coupled to the keybar so as to be substantially aligned radially outboard of the keybar. A spring bar used in the stator core suspension may also include a substantially uniform cross-section throughout a length thereof, which may also be rectangular or round in cross-section. | 05-26-2011 |
| 20110156526 | ELECTRIC MOTOR - An electric motor includes a stator and a rotor rotatably installed in the stator. The stator has a stator core and windings. The stator core has a yoke and a plurality of teeth extending inwardly from the yoke. The stator includes two end caps disposed at opposite axial ends thereof and a plurality of locking members securing the end caps to the stator core. The windings are wound on the respective teeth, and the locking members extend between the end caps through gaps formed between adjacent teeth. | 06-30-2011 |
| 20110298331 | ELECTRIC MACHINE - An electric machine having a stator body and a machine housing is provided. The stator body includes a stator ring of generally annular shape and a plurality of stator teeth projecting radially inward. A first bolt hole is defined in either the stator ring or machine housing, and a first receptacle is defined in the other and is coaxial with the first bolt hole. A second bolt hole is defined in either the stator ring or machine housing, and a second receptacle is defined in the other and is coaxial with the second bolt hole. A first counter bore is coaxial with the first receptacle. A first hollow dowel is mated to the first counter bore and the first bolt hole, and defines a first dowel hole, which is coaxial with the first counter bore and the first bolt hole. | 12-08-2011 |
| 20130002087 | STATOR CORE MODULE, STATOR CORE ASSEMBLY AND PROCESS FOR ASSEMBLING A STATOR CORE ASSEMBLY - The present invention comprises a stator core module, stator core assembly and process for assembling a stator core assembly to replace existing stator cores in electric power generators. First and second stator core modules are aligned such that one end of a fastener assembly in the second stator core module is nested in a counter-bore of the first stator core module and one end of a fastener assembly in the first stator core is nested in a counter-bore of the second stator core module. | 01-03-2013 |
| 20130140939 | ROTOR OF ELECTRIC MOTOR AND MANUFACTURING METHOD THEREOF - A rotor of an electric motor comprises a rotor core composed of laminated steel plates and having pin holes; a pair of end plates having insertion holes of a diameter being greater than or equal to the diameter of the pin holes of the rotor core and arranged on opposite sides of the rotor core; and fastening members inserted into the pin holes of the rotor core, fitted in the insertion holes of the pair of end plates, and pressed by staking at opposite end portions thereof, wherein each fastening member has a body portion, main radially-expanded portions continued from the body portion and being larger in diameter than the insertion holes of the end plates, and protrusions continued from the main radially-expanded portions and protruding from the main radially-expanded portions. | 06-06-2013 |
| 20140103776 | ELECTRICAL MACHINES AND METHODS OF ASSEMBLING THE SAME - A stator is provided. The stator includes a plurality of laminations comprising a first lamination, a second lamination and a plurality of intermediate laminations located between the first lamination and the second lamination. The stator includes a plurality of windings coupled to the plurality of laminations and a key coupled to the plurality of laminations. The key includes a first tab coupled to the first lamination; a second tab coupled to the second lamination; and a portion located between the first and second tabs and coupled to the intermediate laminations, wherein said first tab is configured to move from a first position that is coplanar to said portion to a second position that is orthogonal to the axis of rotation. | 04-17-2014 |
| 20140306574 | BOLT TIGHTENER DEVICE FOR TIGHTENING A THROUGH-BOLT IN A GENERATOR CORE - A generator stator core through-bolt tensioning device that automatically tightens the nut on the through-bolts that hold together and compress laminate plates of the stator core in a high voltage generator. A controller receives a signal from a measuring device, such as a fiber Bragg grating that measures the strain on the bolt, and based on that signal determines whether the nut needs to be tightened. If the controller determines that tightening is necessary, it will cause the tensioning device to automatically tighten the nut while the generator is in service, and use the measuring device to provide feedback of the tensioning of the through-bolt to know when to stop the device from tightening the nut. | 10-16-2014 |
| 20150137655 | ROTOR SECURING ARRANGEMENT AND ROTATING ELECTRIC MACHINE HAVING THE SAME - A rotor securing arrangement for directly or indirectly securing a rotor to a shaft. The rotor has at least one through hole along a axial direction of the rotor. A second hole diameter of the at least one through hole at either or both of axial ends of the rotor is greater than a first hole diameter of the at least one through hole at a portion other than the axial ends of the rotor. The rotor securing arrangement includes a first securing member corresponding to the first hole diameter of the at least one through hole, and a second securing member corresponding to the second hole diameter of the at least one through hole. The first securing member is configured to directly or indirectly secure the rotor to the shaft with at least a portion of the second securing member between the first securing member and the rotor. | 05-21-2015 |
